Terms of use
1. Introduction
These Terms of use ("Terms") are a legally binding agreement between you and Tarfion Ltd, Griva Digeni 59, Kaimakliotis Building, 5th Floor, 6043 Larnaca, Cyprus ("TryBest", "we", "us", "our"). They govern your use of the TryBest website, web application and mobile apps for iOS and Android (together, the "Service"). If you got an app from the App Store or Google Play, section 18 also applies.
By using the Service, creating an account or buying a subscription, you agree to these Terms. If you do not agree, do not use the Service.
The Subscription policy and the Privacy policy are part of these Terms.
Important notice about automatic renewal. TryBest sells auto-renewing subscriptions. Unless you cancel before the end of a trial or of the current billing period, your subscription renews and the payment method you used is charged for the next period, at the price shown to you when you bought it. To stop future charges you must cancel as described in the Subscription policy: a subscription bought in an app is cancelled in your Apple Account or Google Play settings, one bought on the website through our support team. A bank dispute, a removed card or deleting the app is not a cancellation.
2. What TryBest is
TryBest is a web application and a mobile app for iOS and Android that give you access to many AI models in one place:
- Chat. You write a message, choose a model, and the Service sends your message with the recent part of the conversation to that model and shows you its answer as it is produced. You can switch models within one conversation, stop an answer, regenerate it, rename and delete conversations.
- Smart AI. If you leave "Smart AI" selected, the Service picks one of the models on offer for each message, based on the kind of request and your plan. Smart AI is a selection rule we run, not a model of our own. When you pick a named model yourself, your message goes to that model; we never swap it for another one without telling you.
- Apps. Focused tools built on the same models: writing and rewriting text, study and research helpers, summaries of pasted text, documents and videos, generated documents such as slide decks, resumes and plans, everyday-life assistants, and image apps that generate pictures from your description or edit photos you upload, such as the photo editor. Some apps search the web as part of answering. The results of document and image apps are saved in your account so you can come back to them and export them; your images and uploaded photos are listed in your Gallery.
- Learn AI. A short course about using AI, with exercises that a model checks and a certificate of completion. The certificate only confirms that you completed the course's lessons in TryBest and shows the score the course gave you. It is not an academic or professional qualification, it is not accredited or recognised by any school, university, professional body or authority, and it does not certify your skills to anyone. Do not present it as more than that.
We do not develop or train the models. They are made by third parties and reached through their application programming interfaces (APIs), currently via the OpenRouter routing service. Web search inside some apps is also performed by a third-party search provider through OpenRouter.
TryBest is an independent service. It is not the official app of any model provider and is not affiliated with, endorsed by or sponsored by the companies that develop the models it offers, currently OpenAI, Google, DeepSeek, Meta, Anthropic, and SpaceXAI. Model and company names and logos are trademarks of their owners and appear only to show which model you are using.
The models and apps on offer can change. A provider may retire or change a model, and we may add, disable or replace models and apps, for example when a model stops working reliably or its price changes.
3. Who may use the Service
You must be at least 18 years old and able to enter into a binding contract. We do not knowingly provide the Service to anyone under 18; if we learn that a user is under 18, we close the account.
The Service is for your personal use and for your own work. An account belongs to one person and cannot be shared, sold or transferred.
4. Your account
You can look around without an account. To send a message or run an app you need an account, created with your email address and a password, or with Google, or, in the app for iPhone and iPad, with Sign in with Apple. Sign-in is provided by Firebase Authentication; we never see your password. One account works on the website and in the apps.
You are responsible for keeping your password confidential and for everything that happens under your account. If you think someone else has access to it, change your password with the "Forgot password?" link and write to [email protected]. Keep the email address of your account working: it is where we send password reset links, receipts and notices about your subscription.
5. Free use, plans and limits
A new account can get a limited number of free answers or app results. How many is shown in the app. Beyond that, the Service requires a paid subscription. The free plan uses a limited set of models and answers can be shorter.
A subscription includes a usage budget based on what your requests cost us to process: one budget for each week of the subscription, counted from the start of the billing period. Longer conversations, larger inputs, web search, image generation and more capable models use more of it. When the week's budget is spent, the more expensive models become unavailable until the next week begins, and economy models remain available within a separate small fair-use allowance. The exact rules are in the Subscription policy. No plan gives use without limits.
Reaching a limit is a normal part of how the Service works, not a failure of the Service, and by itself does not entitle you to a refund. We may also limit how many requests can be sent in a short time, the size of an input and the length of an answer, and we may suspend use that we reasonably believe is automated or abusive.
Guests and free accounts may be shown part of an app's result; the rest opens with a subscription.
6. AI answers
Answers are produced automatically by third-party models. They can be inaccurate, incomplete, out of date, biased or inappropriate, and a model can sound certain while being wrong. Two models can give different answers to the same question, and the same answer may be given to other people who ask something similar.
- Check anything important against a reliable source before relying on it.
- Answers are not medical, legal, financial, tax or other professional advice and do not replace a professional.
- Generated images and documents may resemble existing works. Make sure you have the right to use them the way you intend to.
- You decide how to use an answer, and you are responsible for what you do with it or publish.
The model providers have their own usage policies. We send your requests under their API terms, which apply to what you send. A provider may refuse a request that breaks its rules.
Image generation and editing can also go wrong: a result may not match your description, may change a person's appearance, age or surroundings in ways you did not ask for, or may look real when it is not. The apps instruct the models not to make sexual or nude images and not to place a recognisable person in a sexual, violent or degrading scene, and the image providers apply their own safety filters, but no filter is perfect.
You can report an answer you find offensive, harmful or wrong with Report under the answer, on the website and in the apps. In the apps, you can also report an image an app generated or edited, with Report under the image or in its full-screen view; on the website, or if a picture shows you without your consent, write to [email protected]. We review reports and use them to improve how the Service handles such requests; we may refuse or remove content and limit or close accounts that misuse the Service. In the apps, we ask for your permission before your first message, photo or app request is sent to a model (see the Privacy policy).
7. Your content
Your messages, the photos you upload, the text and files you give to apps, your answers in the Learn AI course, and the answers, documents and images you receive are your content. We do not claim ownership of it, and as between you and us, the results you create with the Service are yours to use, including commercially, as far as the law and the rights of others allow. In some countries, material produced by AI may not be protected by copyright, and a model may produce similar results for other people, so you may not be able to stop others from using similar material. A photo you edit stays subject to the rights of the people in it and of whoever owns it.
You allow us to store and process your content only as needed to run the Service: to send it to the model you chose (or that Smart AI chose) and to the search provider when an app searches the web, to show you your conversations and documents, to export them for you, to enforce these Terms and to keep the Service secure. We do not use your content for advertising, we do not sell it, and we do not use it to train AI models.
Files you attach or add to an app are read on your device; only the text extracted from them, up to a stated size, is sent to us and then to the model. Photos you attach or give to an image app are uploaded to us and sent to the model. A YouTube link you give to an app is used by our server to fetch the video's captions from YouTube, or is passed to a model that reads the video.
Photos of people. Upload only photos you have the right to use. If a photo shows anyone other than you, you must have that person's permission to upload it and to have it changed by AI, and you must not use the result in a way that person has not agreed to. You must not upload or create, with any app:
- photos of anyone under 18;
- nude, sexual or other intimate images of anyone, including images that undress a person or make them look nude;
- images that place a real person in a sexual, violent, humiliating or deceptive scene, or that could be mistaken for a real photo of something that did not happen, in a way that may mislead others or harm that person.
You are responsible for your content. Do not include information you are not allowed to share, such as other people's personal data without a lawful reason, confidential material you have no right to disclose, or anything that infringes someone's rights. Please avoid putting sensitive personal data in messages: see the Privacy policy for how messages are processed.
You can delete a single conversation on the website or in the apps, and all your conversations at once in Settings on the website. Documents and images made by the apps, and the photos you gave to image apps, stay in your account until you delete it; write to [email protected] to have them removed earlier.
8. Acceptable use
You must not use the Service to:
- break the law, or help anyone else do so;
- produce, request or share sexual content involving minors, including fictional or AI-generated material, or anything that exploits or endangers children;
- harass, threaten, defame or impersonate people, or encourage violence or hatred against them;
- produce non-consensual intimate imagery or deceptive images of real people, upload photos of other people without their permission, or break the rules on photos of people in section 7;
- write malware, plan attacks on computer systems or get around security measures;
- create spam, scams, fraud or content designed to deceive people;
- infringe someone else's intellectual property, privacy or other rights;
- breach the usage policies of the model providers, which also apply to what you send to their models;
- share your account, resell or redistribute access, use scripts or automated tools to send requests or to collect data from the Service, or try to get around limits, the paywall or the usage budget;
- use the Service or its outputs to build a competing model or service, or to copy, reverse engineer or scrape the Service;
- disrupt the Service or test it for vulnerabilities without our written permission.
A model provider may refuse a request that breaks its own rules. We may refuse or remove content, limit use, or suspend or close an account when we reasonably believe these Terms have been broken. Where the law requires it, we may report illegal content to the authorities.
9. Subscriptions and payments
Paid access is an auto-renewing subscription. Before you pay, the offer shows the price, the currency, the length and price of any trial, the renewal price and the renewal period. The amount charged is the one shown at checkout, together with any taxes shown there. Your bank or card issuer may charge its own fees for currency conversion or international payments; those fees are not ours.
On the website, payments are processed by our payment provider. In the apps, subscriptions are sold and billed by Apple (App Store) or Google (Google Play) and are also subject to their terms of sale; prices there are set in the store's currency and may differ from the website. Payment, renewal, cancellation and refunds of a subscription bought in an app are handled by Apple or Google: you manage and cancel it in your Apple Account or Google Play settings and ask Apple or Google for a refund, and we cannot cancel, refund or change it for you. Trials, renewals, cancellation, refunds and price changes are covered by the Subscription policy.
10. Availability and changes
We work to keep TryBest available, but we cannot promise that it will always be available, uninterrupted or free of errors. Models depend on outside providers, who can change, slow down or stop them.
We may change or remove features, models and apps. If we change these Terms in a significant way, we will post the new version on this page and, where appropriate, let you know by email or in the Service. If you keep using the Service after the change takes effect, the new Terms apply.
11. Intellectual property
The Service, its software, design, texts and brand are owned by Tarfion Ltd or its licensors and are protected by intellectual property law. We grant you a personal, non-exclusive, non-transferable right to use the Service under these Terms, including to install and use the apps on devices you own or control. Nothing in these Terms gives you a right to use our name, logo or brand elements. Model and company names belong to their owners.
If you send us ideas or feedback about the Service, we may use them without any obligation to you.
12. Copyright complaints
If you believe that content available through the Service infringes your copyright, write to [email protected] with a description of the work, the location of the content in the Service, your contact details and a statement that you believe in good faith the use is not authorised. We review every notice and remove infringing content where appropriate.
13. Ending your use
You can stop using TryBest at any time. Stopping use, deleting the app or deleting your conversations does not cancel a subscription; to stop future charges, cancel it as described in the Subscription policy. Cancelling a subscription does not close your account.
You can delete your account yourself in the app, in Settings, or by writing to [email protected] from the email address of your account; our account deletion page describes the steps. We delete your content as described in the Privacy policy; payment records are kept as long as accounting law requires. Deleting your account cancels a subscription bought on the website, but not one bought in an app through Apple or Google.
We may suspend or close your account if you seriously or repeatedly break these Terms, if a payment is not made or is disputed, if we suspect fraud, if the law requires it, or if we discontinue the Service. Where reasonably practicable and allowed by law, we will tell you first and give you a chance to fix the problem. Sections of these Terms that by their nature should survive the end of your use continue to apply, including sections 7, 11, 14, 15, 16, 17 and 18.
14. Disclaimer of warranties
The Service is provided "as is" and "as available". As far as the law allows, we make no promises beyond those in these Terms, including about the accuracy of AI answers, their suitability for a particular purpose, or that the Service will be uninterrupted, error-free or secure.
15. Limitation of liability
As far as the law allows, we are not liable for indirect, incidental, special, consequential or punitive loss, for loss of profits, data or goodwill, or for loss caused by relying on an AI answer. Our total liability for all claims connected with the Service or these Terms is limited to the greater of the amount you paid us in the twelve months before the claim arose and 100 US dollars.
Nothing in these Terms limits liability that cannot be limited by law, or takes away rights you have as a consumer under the law of the country where you live.
16. Indemnity
As far as the law allows, you agree to compensate Tarfion Ltd, its affiliates, employees and service providers for third-party claims, losses and reasonable expenses arising from your content, your unlawful use of the Service, or your material breach of these Terms. This does not apply to the extent a claim is caused by our own breach, negligence or misconduct.
17. Governing law and disputes
These Terms are governed by the law of the Republic of Cyprus, without regard to its conflict-of-law rules. Disputes are subject to the jurisdiction of the courts of Cyprus. If you are a consumer in the European Union, the United Kingdom or elsewhere, this does not deprive you of the protection of mandatory consumer law of your country of residence or of your right to bring a claim before the courts of that country.
Before starting a claim, please write to [email protected]: most problems can be solved directly.
18. Apps from the App Store and Google Play
App Store. If you downloaded the TryBest app from Apple's App Store, the following also applies, and prevails over anything in these Terms that conflicts with it:
- These Terms are between you and Tarfion Ltd only, not Apple. Tarfion Ltd, not Apple, is solely responsible for the app and its content.
- Your licence to use the app is limited to a non-transferable licence to use it on Apple-branded products that you own or control, as permitted by the Usage Rules in Apple's Media Services Terms and Conditions, except that the app may also be accessed by other accounts associated with you through Family Sharing or volume purchasing where available.
- Tarfion Ltd is solely responsible for providing any maintenance and support for the app, as described in these Terms or required by law. Apple has no obligation whatsoever to provide maintenance and support services for the app.
- Tarfion Ltd is solely responsible for any product warranties, whether express or implied by law, to the extent they have not been effectively disclaimed. If the app fails to conform to an applicable warranty, you may notify Apple, and Apple will refund the purchase price of the app, if any, to you. To the maximum extent permitted by law, Apple has no other warranty obligation whatsoever with respect to the app, and any other claims, losses, liabilities, damages, costs or expenses attributable to a failure to conform to a warranty are Tarfion Ltd's responsibility.
- Tarfion Ltd, not Apple, is responsible for addressing any claims by you or a third party relating to the app or your possession and use of it, including product liability claims, any claim that the app fails to conform to an applicable legal or regulatory requirement, and claims arising under consumer protection, privacy or similar legislation.
- If a third party claims that the app or your possession and use of it infringes that third party's intellectual property rights, Tarfion Ltd, not Apple, is solely responsible for the investigation, defence, settlement and discharge of that claim.
- You confirm that you are not located in a country that is subject to a US Government embargo or that has been designated by the US Government as a "terrorist supporting" country, and that you are not listed on any US Government list of prohibited or restricted parties.
- Questions, complaints or claims about the app go to Tarfion Ltd at the address and email in section 19.
- You must comply with applicable third-party terms when using the app, for example the terms of your mobile data provider.
- Apple and its subsidiaries are third-party beneficiaries of these Terms. Once you accept these Terms, Apple has the right, and will be deemed to have accepted the right, to enforce them against you as a third-party beneficiary.
Google Play. If you downloaded the app from Google Play, your use of Google Play is also subject to the Google Play Terms of Service. Google is not a party to these Terms and is not responsible for the app or its content.
19. Contact
Tarfion Ltd, Griva Digeni 59, Kaimakliotis Building, 5th Floor, 6043 Larnaca, Cyprus. Email: [email protected].