Comparison

Thinklet vs GrBubble

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Thinklet

Features
Read full description

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.

About

GrBubble

Features
Read full description

GrBubble is an AI-powered image generator that helps you turn your ideas into beautiful digital artwork. Simply enter a text prompt, choose your preferred style, and let AI create unique images for you in seconds. Whether you want fantasy art, anime-style images, portraits, wallpapers, concept art, digital illustrations, social media visuals, or creative design inspiration, GrBubble makes AI image creation simple, fast, and fun. Key Features • Generate AI images from text prompts • Create unique digital artwork in seconds • Explore different creative styles • Make portraits, wallpapers, concept art, fantasy scenes, and more • Turn imagination into high-quality visual ideas • Save and share your AI-generated images • Simple and easy-to-use interface for everyone Premium Membership Upgrade to GrBubble Premium to unlock full access and enjoy more powerful AI image generation features. We offer three membership options: • Weekly Membership Enjoy premium AI image generation features on a weekly basis. • Yearly Membership Get long-term access to premium features with a yearly plan. • Lifetime Membership Unlock premium features with a one-time lifetime purchase. With GrBubble Premium, you can enjoy more creative possibilities and generate AI artwork more freely. Important Information Payment will be charged to your Apple ID account after confirmation of purchase. Subscription plans automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings. Privacy Policy: https://docs.google.com/document/d/1gNasqFPEggVTIdjjqXPYKyTLa2FuepMaPvRNW8qF9Ts/edit?usp=sharing Terms of Service: https://docs.google.com/document/d/1e2P4mvz_whYvMqcibN3hlGfsVwOinS6DlQzNMbCQPGk/edit?usp=sharing

Screenshots

Thinklet4 screens
GrBubble4 screens

Verdict

The call

The clearest difference is in-app purchases: Thinklet at none against GrBubble's 3. GrBubble's advantage is update cadence (every 2 days vs every 2 months) and iOS requirement (15.6 vs 26.2). On price, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. GrBubble sells 3 in-app purchases, starting at $3.99 per 7 days. Thinklet asks for nothing beyond the download.

UpkeepUpdate frequency

Thinklet ships an update every 2 months, GrBubble every 2 days. The most recent releases landed on August 7, 2026 and September 15, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Thinklet versus GrBubble: the parameters behind the verdict, then further details
ParameterThinkletGrBubble
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.215.6 — better
Further details — not scored
Size6 MB10 MB
Age rating4+12+
Developerę“‹ å¼ Chatmuu AI

In-app purchases

None

Thinklet

No in-app purchases

3 purchases

GrBubble

Subscriptions2
  • week vip$3.997 Days
  • year vip$14.991 Year
One-time1
  • lifetime vip$19.99

Questions

Is Thinklet free?
Thinklet is free to download, with no in-app purchases.
Is GrBubble free?
GrBubble is free to download, with in-app purchases available.
Do Thinklet or GrBubble have ads?
Neither Thinklet nor GrBubble shows ads.
Which is updated more often, Thinklet or GrBubble?
Thinklet ships an update every 2 months, and GrBubble every 2 days. Most recently, Thinklet was updated on August 7, 2026 and GrBubble on September 15, 2026.

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