# ChatAi Unlimited - Ai Client — Use Your Ai Account -No Markup > Native Apple AI chat client using your own OpenAI account and API key. (iPhone/iPad app by Philip Bassham.) - Source: https://appshunter.io/ios/app/chatai-unlimited-ai-client/id6446180384 (this page in markdown: same URL + `.md`) - Developer: [Philip Bassham](https://appshunter.io/developer/1676495710) - Category: Productivity, Reference - Price: $2.99 - Rating: 3.56/5 from 41 App Store ratings · 35 written reviews indexed - Age rating: 9+ - Requires: iOS 16.0 · 1 MB - Languages: English - Released: 2023-03-18 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/chatai-unlimited-ai-client/id6446180384/reviews.md ## What is ChatAi Unlimited? Introducing ChatAi Unlimited, a 100% Apple Native Ai Chat client for your Ai account, built using SwiftUI.  Say goodbye to paying crazy markups for other apps and **use your OWN account** and API key. Features: - Use your own OpenAi Account, not ours. - Unlimited conversations stored locally on your device only. - Personas: choose from pre-made chat templates - 100% Native Apple-only - Universal: works on iPhone and iPad (Mac coming soon) - Per-chat settings - Choose model, system message, custom prompt, creativity (temperature) settings - Uses latest APIs from OpenAI (gpt-3.5-turbo, GPT-4) - Choose default settings for new conversations - Adjust display settings - Light/dark mode - Token estimation and more message actions coming soon App icon by Philip Davis: https://twitter.com/philipcdavis DM on Twitter: https://twitter.com/pbassham Custom Prompts: - Personas / Prompts: choose from pre-made chat templates or ADD YOUR OWN! - Edit, hide, favorite prompts for easier access Per-chat settings - Choose model, system message, custom prompt, creativity (temperature) settings - API model picker in app settings - See API usage and costs of a conversation Message Features - Share conversations and messages - Regenerate response button in chat - Show context limits for your chosen model - Edit and delete messages in a thread - Per-conversation model chooser Also: - Uses latest APIs from OpenAI (gpt-3.5-turbo, GPT-4) - Choose default settings for new conversations - Adjust display settings (preview lines to show, etc.) - Light/dark mode - 100% Native Apple-only - Universal: works on iPhone and iPad (Mac coming soon) - GPT-4 beta support Download ChatGPT now and experience the convenience of using your own OpenAI account and API key, along with a plethora of features and updates to enhance your chat experience. ## Key features - Use your own OpenAI account and API key - Unlimited local conversation storage - Pre-made and custom chat personas/prompts - Per-chat model and creativity settings - Native iPhone and iPad support - Supports GPT-3.5-turbo and GPT-4 ## Recent user reviews (10 of 35) All indexed reviews: https://appshunter.io/ios/app/chatai-unlimited-ai-client/id6446180384/reviews.md ### 1/5 — Don’t buy. Doesn’t work! *2025-06-29, version 1.3.1* I bought this app, entered my OpenAI API key, verified it but it’s not responding. It says “conversation is a required value”. ### 1/5 — Rip-off *2024-02-04, version 1.3.1* Says “conversation is a required value”. No contact details or support on the website or in the app. ### 1/5 — not worth it *2023-10-31, version 1.3.1* do not get if you do not have api key, most of these are junk to the average person ### 1/5 — No longer works *2023-09-04, version 1.3.1* Anytime you input a prompt, it will be throttled. There has been no update in several months. DO NOT PURCHASE ### 3/5 — Decent app with bugs *2023-06-12, version 1.3.1* Love the ability to use my own API key, and the native design makes me love it even more. If you plan on only using GPT-3.5 Turbo, it’s great. Otherwise GPT-4 is too unreliable and I see constant timeouts. ### 3/5 — Started Off Great, But Needs Update *2023-05-28, version 1.3.1* This app was off to a great start by saving prompts and keeping the interface clean. But now this is not enough to compete with the rest of the market. Offer a few more features like search. Or auto-continue for long ChatGPT answers. Auto-sync chats with ChatAI in other devices is also necessary. Hope the developer does something and continues to improve something he started doing well. ### 1/5 — Paid to get a standard app—incl. search *2023-05-17, version 1.3.1* Why is there not a search in this app for 3 bucks!? It's such a basic feature that it almost seems plausible to assume OpenAI asked that you don't have one in it. Can we please add that? After numerous chatcs, especially lenghtier one, the solution to get GPT auto-title the chats for easier search does not help at all. Also, if we could include the last active date of the chat like Notes, and unlike the "you are just cettle to feed our monster" OpenAI online app. No seach, no time stamps, no last active dates, just get lost. Keep chatting, every exchange, "I'm here whenever you need, let me know if I can help with anything", even if you explicitly, and in great detail prompt it not to do it, it will. Being able to search maybe reduces interaction equal to that you already had, and could easily find? It's extremely annoying. ### 1/5 — Not working anymore *2023-05-15, version 1.3.1* App is not working anymore ### 5/5 — Love it *2023-05-07, version 1.3.1* That’s some really good stuff. No subscription b***t, just one small payment and you can use your api token. The UI looks great, perfectly inline with Apple style and the user experience is awesome. Simple and efficient, what’s not to like. Thank you to the dev! I wish I had your front end skills 😄 ### 5/5 — Great native app *2023-05-07, version 1.3.1* This is an outstanding native app that allows you to use your own API (which you can then set up billing for pay as you go), is privacy focused, and priced great compared to other apps out there. As another reviewer said, keep working on updates at your own pace and don’t burn yourself out. You have a great start here and will share with others. ## Frequently asked questions about ChatAi Unlimited ### What does ChatAi Unlimited do? ChatAi Unlimited is a native Apple client for AI chat that allows you to connect and use your own OpenAI account and API key. It provides features like unlimited local conversation storage, customizable chat settings, and support for various OpenAI models. ### What are the key features of this app? Key features include using your own OpenAI account and API key, unlimited local conversation storage, pre-made and custom chat personas, per-chat settings for models and creativity, and native support for iPhone and iPad. It also supports GPT-3.5-turbo and GPT-4. ### How much does ChatAi Unlimited cost? The application itself is free to download and use. You will need your own OpenAI account and API key, and any costs associated with using the OpenAI API will be billed directly by OpenAI. ### What devices is ChatAi Unlimited compatible with? The app is 100% native Apple-only and works on iPhone and iPad. A Mac version is planned for the future. ### What are the common use cases for ChatAi Unlimited? Users can leverage this app for various AI-powered conversations, writing assistance, coding help, and creative exploration by utilizing their own OpenAI account and API key. The customizable settings allow for tailored chat experiences. ## Version history (last 5 releases) ### 1.3.1 — 2023-04-05 Mostly bug fixes, with a few tweaks: - New icon on welcome screen - Fixed bug on initial conversation not working after install - Fixed a few other bugs to hopefully make it more stable - Removed "Regenerate" button when there are no messages in a chat - Removed decimal places for token count in conversation settings This bug took way too long to track down, but now that I did, hopefully I can move on to adding more functionality. ### 1.3 — 2023-03-27 NEW: New App Icon! Thanks @philipcdavis! NEW: ADD YOUR OWN PROMPTS NEW: EDIT, HIDE, FAVORITE PROMPTS so everything is easier to get to NEW: SHARE CONVERSATIONS AND MESSAGES NEW: REGENERATE RESPONSE BUTTON in chat, similar to the ChatGPT interface NEW: Show context limits for your chosen model - see token usage in a conversation (based on the API limits of openai) - more to come to help you manage this NEW: GPT-4 beta support - I still do not have access to the GPT-4 API, so this is UNTESTED, but users have said it works, so I have added support to choose the GPT-4 and GPT-4-32k models. NEW: EDIT AND DELETE MESSAGES in a thread -- Even responses from the API. - NOTE: The edit button also allows you to select portions of a message instead of the whole thing. - This helps you be able to manage the context of a conversation as it evolves, removing messages that were unhelpful so they dont cost further tokens. (longer chats cost more tokens as it requires more context processing.) NEW: API MODEL PICKER in app settings. - Choose the default model that you want to use. NEW: Per-conversation model chooser. - Allows you to choose a different model on a per-conversation basis. NEW: Added help for onboarding to add some troubleshooting text for errors NEW: Most recent conversations now show at the top of the list (like every other messaging app in the world. Dont know what I was thinking.) NEW: Timestamp of last message now shows in the conversation view NEW: Updated temperature range settings to go to 2.0, as the API allows. ### 1.2 — 2023-03-20 New: Speak message text. If you tap on a message, an action bar appears below that will let you speak the message aloud. (This was actually in 1.1, but I forgot to mention it.) New: Persona prompt now shows at the top of a message thread. Editable in the chat settings New: Button to easily clear persona prompt in the conversation settings. New, but not exciting: Added the version number to the bottom of the Settings screen Changed: Switched the 'Settings' and Gear icons. Settings = App Settings. Gear in a conversation = settings for that conversation. Changed: Changed "Default prompt" to "System prompt" in conversation settings, since that is what it is called in the API Keep the feedback coming! It definitely helps me prioritize what to work on next! ### 1.1 — 2023-03-19 Tweaked some onboarding bugs and styling. ### 1.0 — 2023-03-18 No release notes. ## Apps similar to ChatAi Unlimited | App | Rating | Price | Category | | --- | --- | --- | --- | | [jottie: smart notes](https://appshunter.io/ios/app/jottie-smart-notes/id6757324448) | — | Free | Productivity | | [Habit Tracker & AI Life Coach](https://appshunter.io/ios/app/habit-tracker-and-ai-life-coach/id6745252758) | 2.0 (1) | Free | Productivity | | [Git Sync Markdown Notes: mdnb](https://appshunter.io/ios/app/git-sync-markdown-notes-mdnb/id6759197854) | 5.0 (1) | Free | Productivity | | [Anchor Maps](https://appshunter.io/ios/app/anchor-maps/id1523798397) | 4.9 (85) | Free | Productivity | | [ChatGenius AI - Ask Anything](https://appshunter.io/ios/app/chatgenius-ai-ask-anything/id6452879331) | 5.0 (3) | $3.99 | Productivity | | [Energy XP Routine Task Tracker](https://appshunter.io/ios/app/energy-xp-routine-task-tracker/id6474200705) | — | Free | Productivity | --- *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 2026-08-29.*