Comparison

Private Mind vs CompactifAI

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

Head to head
About

Private Mind

This AI chatbot operates entirely offline, offering a private and secure space for writing assistance, idea generation, or conversation. Customize AI assistants and test local language models without needing an internet connection.

Highlights
  • Offline AI chatbot
  • Private and secure conversations
  • Customizable AI assistants
  • Local language model testing
  • No internet required
  • No sign-ups or subscriptions
Features
Read full description

Run open AI models like Llama, Gemma, and Qwen on your phone. Offline. Private. Free. No account, no tracking, no subscription. Powered by React Native ExecuTorch. Meet Private Mind, the AI assistant that never phones home. Every conversation runs entirely on your device, so it works in airplane mode, on a plane, or anywhere the internet can't reach. Why Private Mind? · 100% offline: no internet needed, chat anywhere · Total privacy: zero telemetry, your words never leave the phone · Chat with your documents: import PDF or TXT files and get answers with clickable citations, so you can verify every source · Model Hub: curated open models grouped by family, or import your own · Built-in benchmarks: see how fast each model runs on your hardware before you commit · Local speech-to-text: dictate prompts with Whisper, transcribed on-device · Make it yours: custom system prompts, chat search, conversation forking and export Models download once (about 1 to 3 GB each, best over Wi-Fi) and stay on your device. A modern phone with 4 GB+ RAM is recommended for larger models. Not sure? Run the built-in benchmark. Free and open source. Verify the code yourself: github.com/software-mansion-labs/private-mind Built by Software Mansion, core React Native contributors, on React Native ExecuTorch.

About

CompactifAI

Interact with advanced AI models directly on your device, even without an internet connection. This app uses compressed AI models for fast, accurate, and energy-efficient performance, ideal for mobile professionals and privacy-sensitive tasks.

Highlights
  • Fully offline AI model execution
  • No internet or cloud dependency
  • Compressed AI models for efficiency
  • Smart routing for hybrid AI requests
  • On-device and API-based model integration
Read full description

Meet CompactifAI APP CompactifAI APP brings Multiverse Computing’s growing portfolio of advanced, efficient AI models together in one streamlined and intuitive interface. It makes it easy to explore different models, test their capabilities and choose the right option for each task, without the complexity of managing multiple platforms or providers. Access the full range of models offered by Multiverse Computing, including GLM 5.3 and Quasar 438B, through our API. Quasar is our flagship reasoning model, built for enterprise-scale agents, coding and complex professional workflows. With support for English and Spanish, it delivers powerful reasoning across demanding technical and business tasks. Powerful Models, One Application Use CompactifAI APP to explore models suited to a wide range of needs, from everyday queries and content generation to advanced reasoning, coding and agentic workflows. Powered by Multiverse Computing’s CompactifAI technology, these models are optimized to deliver: High-quality, accurate responses Faster and more efficient inference Lower computational and energy requirements Greater flexibility across different use cases Leaner, Smarter & Faster AI  CompactifAI models are:  Efficient - same power, smaller footprint.  Faster - low-latency inference  Accurate - strong performance despite reduced size  You get powerful AI without the overhead of traditional large models.  Built by Multiverse Computing  Multiverse Computing is a deep-tech company pioneering optimized and efficient AI models, enabling advanced AI to run in environments where traditional models cannot.

Screenshots

Private Mind4 screens
CompactifAI4 screens

Verdict

The call

The clearest difference is review sentiment: CompactifAI at 50% against Private Mind's 0%. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Private Mind ships an update every 2 weeks, CompactifAI fortnightly. The most recent releases landed on September 24, 2026 and September 12, 2026 respectively.

Scorecard1 real difference · 9 level
Private Mind versus CompactifAI: the parameters behind the verdict, then further details
ParameterPrivate MindCompactifAI
PriceFreeFree
Rating2.3 (3 ratings) — better—
Positive reviews0.0% of reviews50.0% of reviews — better
Number of ratings3 — better—
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size95 MB80 MB
Age rating4+4+
DeveloperSOFTWARE MANSION SP Z O O SPOLKA KOMANDYTOWAMultiverse Computing

Customer experience

Private Mind

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

CompactifAI

Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

Private Mind

No in-app purchases

None

CompactifAI

No in-app purchases

Questions

Is Private Mind free?
Private Mind is free to download, with no in-app purchases.
Is CompactifAI free?
CompactifAI is free to download, with no in-app purchases.
Do Private Mind or CompactifAI have ads?
Neither Private Mind nor CompactifAI shows ads.
Which is updated more often, Private Mind or CompactifAI?
Private Mind ships an update every 2 weeks, and CompactifAI fortnightly. Most recently, Private Mind was updated on September 24, 2026 and CompactifAI on September 12, 2026.

Other comparisons