ChatAi Unlimited - Native ChatGPT Client

Main Features & Characteristics:

• Use your own OpenAI Account and API key, not a shared one, with no crazy markups.
• Unlimited conversations stored locally on your device only for privacy.
• 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.
• Universal: works on iPhone and iPad (Mac coming soon, currently works on M1 Macs or later).
• Adjust display settings (preview lines to show, etc.) and Light/dark mode.
• Uses latest APIs from OpenAI (gpt-3.5-turbo, GPT-4) with GPT-4 beta support and token estimation.

Target Users: Users looking for a clean, privacy-focused iOS-native interface for ChatGPT who want to use their own OpenAI API key to avoid predatory pricing or subscription markups.

Core Advantages: 100% Native Apple-only (SwiftUI), making the native interface much faster than the web interface; saves chats locally for privacy; cheaper and more transparent than paying for ChatGPT Plus as it uses the user's own API.

Pricing & Cost: The app is priced at $2.99 (one-time purchase, supports Family Sharing). Users must supply their own OpenAI API key, and API usage is metered by token counts and billed separately by OpenAI.