Thinklet vs Private AI
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Thinklet
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Thinklet is a powerful, privacy-friendly AI chat client for iOS. Connect it to any OpenAI-compatible API -- including OpenAI, Anthropic, Mistral, Groq, Ollama, and self-hosted models -- and start chatting in seconds. CONNECT ANY AI MODEL Add your own API key and Base URL. Thinklet works with any service that follows the OpenAI Chat Completions standard. Manage multiple platforms side by side, browse the full model list, and star your favorites for quick access. NATURAL VOICE CONVERSATION Press and hold the mic button to speak. Thinklet transcribes your words in real time and sends them the moment you lift your finger. Enable the speaker to have AI responses read aloud -- perfect for hands-free use. ATTACH IMAGES & FILES Pick a photo from your library or attach a text or PDF file directly to your message. Vision-capable models can analyze images; text files are embedded as context so the AI understands your documents. SMART SYSTEM PROMPTS Choose from built-in prompt templates -- General Assistant, Blog Writer, Code Expert, Translator, Academic Editor, Creative Writer -- or craft and save your own. Each conversation can have its own persona. PER-CONVERSATION PARAMETERS Fine-tune Temperature, Max Tokens, Top-P, and streaming mode for every chat independently. Add custom key-value parameters for advanced API features without touching a single line of code. MCP TOOL INTEGRATION Connect external tools and data sources via the Model Context Protocol (MCP). Enable web search, code execution, database queries, or any MCP-compatible service -- and assign different tools to different conversations. CLEAN, FOCUSED DESIGN A sidebar keeps all your conversations organized. Swipe right or tap the menu icon to open it. The minimal input bar stays out of your way until you need it. Dark mode and Dynamic Type are fully supported. YOUR DATA, YOUR CONTROL Thinklet stores everything -- conversations, settings, API keys -- locally on your device using iOS secure storage. No account, no cloud sync, no telemetry. Whether you are a developer experimenting with the latest models, a writer looking for a creative partner, or a professional who needs a capable AI assistant on the go, Thinklet gives you the flexibility and power you need, beautifully packaged for iPhone. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Private AI
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What if you had a true AI assistant on your smartphone that works without Wi-Fi, requires absolutely no account registration, and completely protects all your conversations? "Private AI" makes this a reality. This AI runs directly on your iPhone or iPad, not on a corporate server. No internet connection or sign-up needed. Your data is never sent anywhere; every conversation always stays on your device alone. Your Privacy, Fully Guaranteed Most AI apps send your messages to external servers, but Private AI is different. The AI model lives and thinks directly inside your smartphone. This means your questions, ideas, and conversations belong entirely to you. It is perfect for anyone who values privacyβwhether you are brainstorming work ideas, writing a personal journal, or discussing sensitive topics. Full-Fledged AI on Your Phone Private AI runs some of today's most powerful open-source AI models, including Gemma, Qwen, Ministral, and Phi. New models are added regularly, allowing you to always experience the latest advancements in AI. Once you download a model, it is yours to keep. You never need an internet connection to chat. Thinking Mode Turn on Thinking Mode to see the AI's reasoning process before it delivers an answer. It visualizes the AI's thoughts, making it perfect for getting deeper, more structured responses to complex questions. Just Speak β Or Just Listen Skip the typing and ask questions with your voice. You can also have the AI read its answers aloud. It is incredibly convenient when your hands are full or when you simply prefer listening. Rich Features for Natural Interactions - Auto-save chat history: Pick up right where you left off. - Edit past messages: Get new answers instantly. - Organize freely: Rename and manage your chats with ease. - Custom AI personalities: Set a unique persona for each conversation. - Save favorite prompts: Quick access whenever you need them. - Adjust AI settings: Fine-tune creativity and focus. How It Differs from Cloud-Based AI Because the AI runs locally on your device, response speeds depend on your phone's hardware performance. While it might not respond instantly like cloud-based AIs, it is completely private. Best of all, its greatest strength is that it works flawlessly even on airplanes or in places with no reception. Privacy Policy & Terms of Service https://pochimutech.com/en/private-ai/terms
Screenshots
Verdict
The clearest difference is ads: Thinklet at none against Private AI's shown. Private AI's advantage is iOS requirement (17 vs 26.2). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Thinklet sells 4 in-app purchases, starting at $4.99 per month and Private AI sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.
| Parameter | Thinklet | Private AI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.2 | 17 β better |
| Further details β not scored | ||
| Size | 10 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | ζ΄ εΌ | Ayumu Izumi |
In-app purchases
Thinklet
- Starter$4.991 Month
- Basic$9.991 Month
- Pro$19.991 Month
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- Max$49.991 Month
Private AI
- Monthly Plan3 Days trial$2.991 Month
- Yearly Plan$29.991 Year









