Terms of Use

The agreement between you and Buffalo for using Hilo: what the app is, what it is not, and how subscriptions work.

Last updated: October 24, 2026

1. The agreement

These terms form an agreement between you and Buffalo Dijital Hizmetler A.Ş. (“Buffalo”, “we”, “us”), a company incorporated in Türkiye, covering your use of the Hilo mobile application and hiloai.app (together, “Hilo”).

By downloading, opening or using Hilo you accept these terms and our Privacy Policy. If you do not accept them, do not use Hilo, and remove it from your device.

You must be at least 18 years old to use Hilo.

Contact: hilo@buffalostudio.co
Address: Cevizli Mah. Zuhal Cad. A Blok No: 46/50, 34846 Maltepe / İstanbul, Türkiye

2. What Hilo is, and what it is not

Hilo is an AI companion app. You talk with companions by voice or text. They can remember what you share, suggest small steps and guide short exercises such as breathing.

Hilo’s companions are fictional characters. Their replies are generated by artificial intelligence, not written by a person. Please keep this in mind:

• Replies can be wrong. AI can produce answers that are inaccurate, incomplete, out of date or inappropriate. Do not rely on Hilo for important decisions about your health, safety, money, legal matters or relationships.
• Hilo is not a medical or mental health service. It does not diagnose, treat or prevent any condition, and it is not a substitute for a doctor, therapist or counsellor. The breathing exercises and steps are general wellbeing suggestions, not medical advice.
• Hilo is not an emergency service. If you are in danger, or thinking about harming yourself or someone else, contact your local emergency number right away. If a conversation suggests you may be in crisis, the app shows crisis resources and may pause or change the conversation.
• Companions are not people. They have no feelings, do not know you outside the app and cannot act in the world on your behalf.

Any decision you take after using Hilo is yours, and you are responsible for it.

3. Your account

You sign in with Google or Apple to keep your conversations, memories and steps with your account. Keep your Google or Apple account secure. You are responsible for what happens under your Hilo account. One account is for one person.

You can delete your account at any time in the app (You, then Settings, then Delete account) or by emailing us. Deleting your account deletes your conversations, memories and steps. It does not cancel a subscription.

4. Your conversations and content

What you say and type in Hilo (“your content”) stays yours. You give us permission to store, process and transmit your content, including through the AI providers named in our Privacy Policy, only as needed to run Hilo for you: to reply, remember, suggest steps and keep the service safe.

We do not use your conversations to train AI models.

You are responsible for your content. Please do not share other people’s private information without their permission.

The replies companions generate for you are yours to use for your own personal purposes.

5. Acceptable use

You may not:

• use Hilo if you are under 18;
• use Hilo to break any law, or to harass, threaten or harm anyone;
• try to make companions produce sexual content involving minors, content that promotes violence or self-harm, or other illegal content;
• try to bypass Hilo’s safety measures, usage limits or paid features, for example by manipulating prompts or creating several accounts;
• copy, modify, translate or create derivative works from Hilo, except where the law expressly permits it;
• reverse engineer, decompile or disassemble the app, or attempt to derive its source code;
• access Hilo through bots, scripts or other automated means, or extract its content, characters or replies to build a competing product, a dataset or to train a model;
• rent, lease, sell, sublicense or otherwise make Hilo available to anyone else;
• interfere with Hilo’s servers, or tamper with how usage time, invites or purchases are recorded.

If a companion says something harmful or inappropriate, please report it: long press the reply and choose “Report this response”.

6. Licence and intellectual property

We grant you a personal, non-exclusive, non-transferable, revocable licence to install and use Hilo on devices you own or control, for your own non-commercial use.

We keep every other right. Hilo, its name, its logo, its interface, its companions (their names, looks, voices, personalities and animations), its texts and the software itself are ours or our licensors’, and are protected by intellectual property law.

You may share the selfie and share cards the app creates for personal, non-commercial use. You may not use Hilo’s companions or brand in advertising, merchandise or other commercial work without our written permission.

7. Free plan and Hilo Pro

Free plan. Hilo is free to use with a limited amount of conversation time per day or per week. The current limit is shown in the app.

Hilo Pro. A paid subscription gives you more conversation time and the features described in the app before you buy. Hilo Pro also has a conversation time limit per day or per week, shown in the app. Unused time does not carry over to the next day or week. We may change the limits of the free plan and of Hilo Pro. A change to Hilo Pro will not reduce what you get during a period you have already paid for.

Bonus time. We may offer extra conversation time, for example for inviting friends. Bonus time has no cash value, cannot be transferred and may have its own conditions and expiry, shown in the app.

Price and billing period. These are shown in the app before you buy, and again on the store’s confirmation screen. They vary by country and may change over time. The store always shows the amount that will be charged before you confirm.

Payment. The purchase is made through the App Store or Google Play, under your store account. We do not process the payment and we never receive your card details.

Automatic renewal. Subscriptions renew automatically at the end of each period unless you cancel at least 24 hours before it ends. Your store account is charged for the renewal within 24 hours before the end of the current period.

Managing and cancelling. You cancel through your store account (in Settings on iOS, or in the Play Store on Android), not through us, because we cannot cancel it for you. Cancelling stops the next renewal. You keep access until the end of the period you have already paid for. Deleting the app or your Hilo account does not cancel a subscription.

Free trials. Where a free trial is offered, it turns into a paid subscription automatically when it ends, unless you cancel before then. Whether a trial is available depends on your store account and its history. An account that has already used a trial for Hilo will not be offered another. Where the app can, it will remind you before a trial ends, but please do not rely on that reminder: notification permission, device settings and the operating system all affect whether it arrives. Cancelling in time remains your responsibility.

Refunds. Refunds are handled by Apple and Google under their own policies, and we cannot issue them. If you are a consumer in a country that gives you a legal right of withdrawal, this section does not affect that right.

8. Changes to Hilo

We develop Hilo continuously. Features, companions, voices and limits may be added, changed or removed. Companions may answer differently over time as we improve them or change AI providers.

We may require you to update to a supported version to keep using the app, and we may stop supporting older versions or operating systems.

We may also stop offering Hilo altogether. If we do, and you hold a subscription that extends beyond that point, you may seek a refund of the unused portion through the store that charged you.

9. Third parties

Hilo relies on services run by others: Apple and Google as app stores, sign-in and payment providers, AI providers that generate replies and voices and turn speech into text, Google Firebase and Google Cloud for infrastructure and diagnostics, RevenueCat for subscriptions, and analytics and attribution providers. Our Privacy Policy describes how they handle data.

We are not responsible for those services’ availability or for their own terms, which you accept separately with them.

10. Availability

We do not promise that Hilo will be available without interruption or free of errors. It depends on your device, your operating system, your network connection and the third parties above, and any of them can fail.

11. Suspension and termination

You may end this agreement at any time by deleting your account and removing Hilo from your devices.

We may suspend or end your access if you breach these terms, if you misuse Hilo or try to harm other people through it, if you tamper with the app or its purchase mechanism, or where the law requires it. Where the breach is minor and can be put right, we will normally tell you first.

Ending this agreement does not by itself cancel a subscription bought through a store. You must cancel that through your store account.

12. Disclaimer of warranties

To the fullest extent permitted by applicable law, Hilo is provided “as is” and “as available”, without warranty of any kind, whether express or implied, including any implied warranty of merchantability, fitness for a particular purpose, accuracy or non-infringement.

We do not warrant that companions’ replies, suggestions, steps or exercises are accurate, complete, suitable for you or free of error.

Some countries do not allow the exclusion of certain warranties. Where that is so, the exclusions above apply only to the extent permitted, and your mandatory legal rights as a consumer are unaffected.

13. Limitation of liability

To the fullest extent permitted by applicable law, Buffalo is not liable for any indirect, incidental, special, consequential or punitive damages, nor for any loss of profit, revenue, data or opportunity, arising out of or in connection with your use of Hilo.

In particular, we are not liable for decisions you take or actions you take based on what a companion said.

Where liability cannot lawfully be excluded, our total liability arising out of or in connection with these terms is limited to the amount you paid for Hilo in the twelve months before the event giving rise to the claim.

Nothing in these terms excludes liability for death or personal injury caused by negligence, for fraud, or for anything else that cannot lawfully be excluded.

14. Indemnity

You agree to indemnify Buffalo against claims, losses and reasonable costs arising from your use of Hilo in breach of these terms or of any law that applies to you.

15. Force majeure

Neither party is liable for a failure to perform caused by an event beyond its reasonable control, including natural disaster, epidemic, war, civil unrest, strike, failure of a public telecommunications network, government action, or the failure of a third-party service on which Hilo depends.

16. Governing law and jurisdiction

These terms are governed by the laws of the Republic of Türkiye. The courts and enforcement offices of İstanbul, Türkiye have jurisdiction over any dispute arising out of them.

If you are a consumer, this does not take away the protection of the mandatory law of the country where you live, and it does not prevent you from applying to your local consumer arbitration committee or consumer court where that route is available to you.

17. Changes to these terms

We may revise these terms. The version in force is the one published at hiloai.app/terms, and the date at the top tells you when it last changed. If a change materially affects your rights, we will tell you in the app before it takes effect. If you keep using Hilo after that, you accept the revised terms.

18. General

If any part of these terms is found unenforceable, the rest remains in force and that part is applied to the greatest extent permitted.

If we do not enforce a provision, that is not a waiver of it.

You may not transfer your rights under these terms. We may transfer ours as part of a merger, acquisition or sale of assets, after telling you.

These terms, together with the Privacy Policy, are the entire agreement between us regarding Hilo, and replace anything said or written before.

19. Contact

Buffalo Dijital Hizmetler A.Ş.
Cevizli Mah. Zuhal Cad. A Blok No: 46/50, 34846 Maltepe / İstanbul, Türkiye
hilo@buffalostudio.co
hiloai.app

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