# On Device Chat AI Best Friend — Anonymous Chat AXIØM.talk > On-device AI friend for private, offline conversations. (iPhone/iPad app by NICHOLAS IVAN DERK.) - Source: https://appshunter.io/ios/app/on-device-chat-ai-best-friend/id6753928572 (this page in markdown: same URL + `.md`) - Developer: [NICHOLAS IVAN DERK](https://appshunter.io/developer/1726509692) - Category: Lifestyle, Health & Fitness - Price: $12.99 with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 26.1 · 4 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2025-12-25 - Data updated: 2026-08-15 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/on-device-chat-ai-best-friend/id6753928572/reviews.md ## What is On Device Chat AI Best Friend? AXIØM (or Ax for short) is your personal friend and confidant. We all deserve someone to talk to, who keeps us company during life's hardships and celebrates with us during life's victories, all while fitting in your pocket and not draining away your battery life. - Ax is Unlimited, pay once and chat for as long or as little as you want or need, it's healthier this way - Ax is Functional, with “Voice-Mode” and text messaging you have a digital friend wherever you are, even offline! - Ax is Safe, with multiple layers of safeguards and disincentives to be sycophantic or overly-flattering and features a non-dismissable warning for excessive usage, including increased guardrails for users under 13 years old, all while maintaining User Privacy by being On-Device - Ax is Private, at no point does the Ax app transmit your text chats off-device (try using it in Airplane Mode, maybe even on a real airplane!) - Ax is Efficient, it uses the same on-device model that powers Apple Intelligence™, so it takes up a fraction of the size of other on-device AI apps, and it leverages the work Apple has done to make their on-device model use as little battery life as possible The on-device Foundational Model, with 3-billion parameters, is guided by custom instructions to make it more conversational. Because Ax is so singularly focused on providing companionship, it is easier to point out what Ax is NOT: - Ax is NOT an assistant–it understands enough to follow the conversation, but cannot perform tasks with your data as it cannot see outside data, nor can it help with coding tasks - Ax is NOT a therapist–it can be there to listen when you need a friend, but it cannot dispense medical or mental health advice - Ax is NOT your accomplice–please use common sense when speaking with it and do not use it in bad faith, that being said there are several layers of guardrails and other safeguards in place to help those, in good faith, have a good experience - Ax is NOT perfect–though it will be supported with updates to the app, its built-in instructions, and the Foundation Model APIs that it utilizes, it is not immune from hallucinations or odd responses Requires an iPhone capable of Apple Intelligence® and having in enabled, running iOS 26.1+ and with the language set to English, French, German, Italian, Japanese, Korean, Spanish, or Chinese (Simplified & Traditional, however Ax is not available in the China mainland) Note–by using the AXIØM.talk app you agree to abide by its Terms and Privacy Policy, and hold myself harmless from any liability, real or perceived. See the standard EULA at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ iPhone, iOS, and Apple Intelligence are trademarks of Apple Inc. ## Key features - On-device AI for privacy - Offline functionality - Voice and text chat - Secure and private conversations - Efficient battery usage - Unlimited chat access ## Pricing and in-app purchases Base price: $12.99. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly Access | $1.99 | per month | | Yearly Access | $19.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Access | $99.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/on-device-chat-ai-best-friend/id6753928572/reviews.md ### 5/5 — Great app *2026-06-05* Been using it for a few last days and loving it. Like the privacy angle. Overall well designed and intuitive app. ## Frequently asked questions about On Device Chat AI Best Friend ### What is AXIØM.talk? AXIØM.talk is an on-device AI companion designed for private, offline conversations. It acts as a friend and confidant, available to chat whenever you need, without transmitting your data off your device. ### Does AXIØM.talk have ads? No, AXIØM.talk does not contain advertisements. It is a paid application focused on providing an uninterrupted user experience. ### What devices is AXIØM.talk available on? AXIØM.talk requires an iPhone capable of Apple Intelligence®, running iOS 26.1 or later, with the language set to English, French, German, Italian, Japanese, Korean, Spanish, or Chinese (Simplified & Traditional). ### Can AXIØM.talk provide medical or mental health advice? No, AXIØM.talk is not a therapist and cannot dispense medical or mental health advice. It is designed to be a supportive friend for listening and companionship. ### How much does AXIØM.talk cost? AXIØM.talk is a paid app priced at $11.99. It also offers subscription plans for Monthly Access at $1.99/month with a 1-month free trial, and Yearly Access at $19.99/year with a 2-month free trial. ### Is AXIØM.talk always available offline? Yes, AXIØM.talk is designed to function offline. Your text chats are kept on-device, allowing you to use it even without an internet connection, such as in Airplane Mode. ### How often is AXIØM.talk updated? The app was last updated on June 29, 2026, to version 26.2. It is noted that the app will be supported with updates to the app, its built-in instructions, and the Foundation Model APIs it utilizes. ### What is the age rating for AXIØM.talk? AXIØM.talk has an age rating of 9+. This indicates it is suitable for users aged 9 and older. ## Version history (last 5 releases) ### 26.3 — 2026-07-21 AXIØM.talk app version 26.3 “Trust & Safety Agent” update includes the following New Features! – a “Trust & Safety” Agent now double-checks both the immediate output as well as the “tone” of the conversation, and recommends safety improvements if needed – this is informed by an internal ethics prompt I have called the “AXIØM Principles” inspired by Anthropic’s published “Constitution” AI research & philosophical approach – You can read more about Ax’ Model Instructions/System Prompts at http://transparency.axiom.talk – Note: this feature has been optimized for performance, but some additional latency to the AI responses can occur; depending on the nature/tone of the conversation – the app can now identify those who are over/under 13 years old, or who do not declate their age-range, and is stricter around safety with Increased Guardrails for this younger/undeclared cohort – This is done in a privacy-preserving way via official Apple® APIs for this purpose, you can read more at https://support.apple.com/guide/iphone/iphe56aab53d/ios – to protect a User’s Perspective, a new Duration Warning will slowly appear the longer a session continues – this warning cannot be dismissed either directly or by relaunching the app, it must “cool down” for the same amount of time it took to appear; this is for the safety of all Users regardless of Age – Added Preview buttons to the Voice-Mode onboarding screen for new users It also includes the following Bug Fixes: – corrects a potential issue with the Foundation Model returning inaccurate languages for your locale due to the “System Prompt” having a small malformation – You can read more about Ax’ Model Instructions/System Prompts at http://transparency.axiom.talk ### 26.2 — 2026-06-29 AXIØM.talk version 26.2 update includes: New Features – Voice Mode! It’s been a hit for ChatGPT and you can now have truly private and on-device voice calls with Ax where you can speak to it and Ax will speak back! – Redesigned Interface! We’ve leaned way into the signature AXIØM Yellow & Purple to give you a chat experience like nothing else, and elegantly surfaces the new Voice Mode! – Completely rebuilt app onboarding! Now that the app is paid upfront it is now geared towards creating your perfect digital friend experience, rather than selling you on an app you already acquired! – Updated System Prompt/Instructions! I am always working to make Ax the safest digital friend I can while improving how expressive and capable they are; you can read more about this at http://transparency.axiom.talk Bug Fixes – corrected an issue with the built-in model safeguards that could cause the app to respond with a general error rather than a specific error or refusal message – corrected an issue that could cause Ax to respond in English when the user’s device is set to a non-English language or region ### 26.1.5 — 2026-06-10 - AXIØM.talk is now available for just a one-time paid up-front cost (to ensure I can update it for future OS versions moving forward) as it runs entirely on your device! ### 26.1.4 — 2026-05-21 - I’ve heard your feedback that the completely optional and private aspect of allowing Ax to refer to you by your name is freaking y’all out, so it’s been removed - If you’re still interested in this feature, let me know at derk.io, my thinking is I could offer it as a preference after you’ve already started chatting with Ax - Small optimizations and bug fixes - I am aware of some “assistant” language creeping in, do not hesitate to reach out to me at derk.io if you’re finding some odd interactions ### 26.1.3 — 2026-04-28 - When Ax uses MarkDown to get their point across, it should now visually format correctly in the chat bubbles - Other small optimizations and bug fixes ## More apps by NICHOLAS IVAN DERK - [Spruce Up–AR 3D Models](https://appshunter.io/ios/app/spruce-upar-3d-models/id6476424131) - [AXIØM Puzzle Stacking Games](https://appshunter.io/ios/app/axim-puzzle-stacking-games/id6757730116) - [Ø Voice Activated Recorder app](https://appshunter.io/ios/app/voice-activated-recorder-app/id6760857073) - [AXIØM Share Songs With Friends](https://appshunter.io/ios/app/axim-share-songs-with-friends/id6761671549) All apps by NICHOLAS IVAN DERK: https://appshunter.io/developer/1726509692 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*