Comparison

ZeroChat vs BigOit

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

Head to head
About

ZeroChat

This app provides powerful AI conversations locally on your device, ensuring complete privacy with no cloud dependency. Download AI models once and use them offline without subscriptions or usage limits.

Highlights
  • Offline AI processing
  • Multiple downloadable AI models
  • No subscription fees
  • No usage limits
  • Complete data privacy
  • Customizable themes
  • Universal app support
Features
Read full description

COMPLETE PRIVACY - YOUR DATA STAYS ON YOUR DEVICE ZeroChat brings powerful AI conversations directly to your iPhone, iPad, Mac, and Apple Vision Pro - with zero cloud dependency. Once you download your preferred AI models, everything happens locally on your device. KEY FEATURES: MULTIPLE AI MODELS • DeepSeek, Qween and more • Download once, use forever offline • No subscription fees or usage limits ULTIMATE PRIVACY • 100% local processing • No data sent to servers • Perfect for confidential work discussions • Safe for sensitive business data • Your conversations never leave your device PERSONALIZED EXPERIENCE • Custom color themes and styling • Light and dark modes • Beautiful, intuitive design PERFECT FOR: • Business professionals handling sensitive data • Travelers needing AI without internet • Privacy-conscious users • Students and researchers • Remote workers and consultants • Anyone wanting AI without cloud dependency UNIVERSAL APP • Native iPhone, iPad, Mac, and Vision Pro support • Optimized for Apple Silicon performance • Seamless experience across all your devices • Works great on any screen size WHY CHOOSE ZEROCHAT? Unlike cloud-based AI assistants, ZeroChat ensures your conversations, ideas, and sensitive information never leave your device. Whether you're brainstorming confidential business strategies, working on personal projects, analyzing sensitive documents, or need AI assistance while traveling without internet, ZeroChat provides powerful AI capabilities with complete privacy. No monthly subscriptions. No usage limits. No data collection. Just powerful AI that respects your privacy. Download ZeroChat today and experience AI conversations with true privacy and unlimited potential. Your AI. Your device. Your privacy.

About

BigOit

Features
Read full description

BigOit is a private AI assistant designed to run entirely on your device. After downloading a model, you can generate answers without an internet connection, account, or sign-in. Your prompts, conversations, dictated speech, and attached photos are processed locally and never sent to an AI server. FEATURES • Choose from Gemma 4 and Qwen 3 on-device models • Ask questions and generate detailed answers offline • Attach photos for private, on-device image understanding • Dictate naturally with automatic spoken-language detection • Receive answers in English, Arabic, German, Spanish, French, Brazilian Portuguese, Japanese, or Simplified Chinese • View programming code in dedicated blocks with a convenient Copy button • Keep encrypted chat history on your device • Search, rename, pin, and automatically delete conversations • Listen to generated answers using text-to-speech • Select from multiple app icons and appearance options • Use a native interface designed for both iPhone and iPad Models are downloaded only when you choose to install them. Model availability depends on your device’s memory.

Screenshots

ZeroChat4 screens
BigOit4 screens

Verdict

The call

The clearest difference is iOS requirement: ZeroChat at 17.6 against BigOit's 26.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 8 level
ZeroChat versus BigOit: the parameters behind the verdict, then further details
ParameterZeroChatBigOit
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequency—Every 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better26.0
Further details — not scored
Size22 MB66 MB
Age rating4+4+
DeveloperRHAMS LLCMohammed Alblooki

In-app purchases

None

ZeroChat

No in-app purchases

None

BigOit

No in-app purchases

Questions

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

Other comparisons