Comparison

Catalyst vs ChatAimi

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

Head to head
About

Catalyst

Access multiple leading AI models in one app, compare their responses, and generate images or videos. It also supports Python code execution and web searches with sources. Bring your own API keys for flexibility and control over your data.

Highlights
  • Access multiple AI models
  • Compare AI model responses
  • Generate images and video clips
  • Secure Python sandbox
  • Web search with sources
  • Attach files and photos
  • Persistent conversation memory
Features
Read full description

Catalyst puts today's best AI models in one place — and lets you switch between them with a tap. Chat with models from Anthropic, OpenAI, Google, and more in a single conversation, and bring your own API keys so you're never locked in. WHAT YOU CAN DO • Chat with multiple AI models — pick the right one for each question, or compare answers side by side • Generate images from a prompt, and create or animate short video clips • Run Python in a secure sandbox for calculations, data analysis, and charts • Search the web for current information, with sources • Attach photos and files and ask about them • Give the assistant a memory that carries useful context across conversations BRING YOUR OWN MODELS Catalyst is model-agnostic. Connect your own provider keys — Anthropic, OpenAI, Google, or any OpenAI-compatible endpoint — and use the models you choose at the provider's own rates. A better, cheaper model ships every few weeks; point Catalyst at whatever's best today. YOUR DATA, YOUR CONTROL Your conversations sync securely so your history follows you across devices. Export everything you've created at any time, and delete individual chats — or your whole account — from inside the app. Catalyst on iPhone and iPad is the companion to the full workspace at catalyst.voov.ai, where you can also build workflows, mini apps, and connect data sources. Sign in with Apple, Google, or email.

About

ChatAimi

Features
Read full description

ChatAimi is a smart AI chat assistant designed to help you ask questions, write better, generate ideas, and handle everyday tasks more easily. Whether you need help with writing, rewriting, translation, brainstorming, studying, work, creative ideas, social media captions, emails, or daily questions, ChatAimi gives you a fast and useful AI chat experience anytime. With ChatAimi, you can turn your thoughts into clear answers, improve your writing, explore new ideas, and enjoy natural AI conversations in a simple and easy-to-use chat interface. Key Features • Chat with AI anytime • Ask questions and get helpful answers • Get help with writing, rewriting, and polishing text • Translate, summarize, and explain content • Generate ideas for work, study, and daily life • Create emails, captions, messages, stories, and more • Enjoy a smooth and simple AI chat experience Premium Membership Upgrade to ChatAimi Premium to unlock full access and enjoy a better AI chat experience. We offer three membership options: • Weekly Membership Enjoy premium AI chat features on a weekly basis. • Yearly Membership Get full access for one year and enjoy better long-term value. • Lifetime Membership Unlock lifetime access with a one-time purchase. Payment will be charged to your Apple ID account after confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in your App Store account settings after purchase. Privacy Policy: https://docs.google.com/document/d/1ucjFK8q28e608WqEptTiPDCQoDApSAzpW9fKAf0P0Gg/edit?usp=sharing Terms of Service: https://docs.google.com/document/d/1fuRn_fGZruEQsR7MaV4YobhsuipFBbbaytzoJH1Kceo/edit?usp=sharing

Screenshots

Catalyst4 screens
ChatAimi4 screens

Verdict

The call

The clearest difference is in-app purchases: Catalyst at none against ChatAimi's 3. ChatAimi's advantage is iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

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

Scorecard2 real differences · 7 level
Catalyst versus ChatAimi: the parameters behind the verdict, then further details
ParameterCatalystChatAimi
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size31 MB3 MB
Age rating12+12+
DeveloperObjectGraph LLCOPAI LLC

In-app purchases

None

Catalyst

No in-app purchases

3 purchases

ChatAimi

Subscriptions2
  • week membership$3.997 Days
  • year membership$6.991 Year
One-time1
  • lifetime membership$9.99

Questions

Is Catalyst free?
Catalyst is free to download, with no in-app purchases.
Is ChatAimi free?
ChatAimi is free to download, with in-app purchases available.
Do Catalyst or ChatAimi have ads?
Neither Catalyst nor ChatAimi shows ads.

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