Comparison

BigOit vs Zeus

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

Head to head
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 β€’ Choose from Gemma 4 and Qwen 3 on-device models β€’ Ask questions and generate detailed answers offline β€’ Attach photos for private, on-device image understanding β€’ Dictate naturally with automatic spoken-language detection β€’ Receive answers in English, Arabic, German, Spanish, French, Brazilian Portuguese, Japanese, or Simplified Chinese β€’ View programming code in dedicated blocks with a convenient Copy button β€’ Keep encrypted chat history on your device β€’ Search, rename, pin, and automatically delete conversations β€’ Listen to generated answers using text-to-speech β€’ Select from multiple app icons and appearance options β€’ 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.

About

Zeus

Features
Read full description

Zeus is a private AI workspace for iPhone, iPad and Mac. Start in a clean chat, choose Offline or Zeus Cloud, attach documents, run structured agent tasks and keep every answer tied to a clear privacy receipt. Offline mode is free and works without an account. Zeus Cloud AI is available with Zeus Pro when you choose online processing. Sign in with Apple is used for Pro access and optional sync. What you can do: β€’ Chat in a focused, modern interface β€’ Switch between Offline and Zeus Cloud β€’ Use local tools without an account β€’ Unlock hosted AI with Zeus Pro β€’ Keep chat history and workspaces organized β€’ Analyze PDFs, text and Markdown files β€’ Turn ideas into plans with agents β€’ Dictate prompts and listen to replies β€’ See where each response was processed β€’ Export summaries, prompts and reports Zeus is built for people who want powerful AI with clear control over privacy, cost and context. Local-first. Cloud when you choose it. Private by design. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BigOit4 screens
Zeus1 screens

Verdict

The call

The clearest difference is in-app purchases: BigOit at none against Zeus's 4. BigOit also leads on update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement 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

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

Both are free to download. Zeus sells 4 in-app purchases, starting at $2.99 per month. BigOit asks for nothing beyond the download.

UpkeepUpdate frequency

BigOit ships an update every 2 days, Zeus monthly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard2 real differences Β· 4 level
BigOit versus Zeus: the parameters behind the verdict, then further details
ParameterBigOitZeus
PriceFreeFree
Update frequencyEvery 2 days β€” betterMonthly
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.0 β€” better26.5
Further details β€” not scored
Size66 MB9 MB
Age rating4+17+
DeveloperMohammed AlblookiEnrique Ivars

In-app purchases

None

BigOit

No in-app purchases

4 purchases

Zeus

Subscriptions4
  • Zeus Pro Monthly$2.991 Month
  • Zeus Pro Max Monthly$14.991 Month
  • Zeus Pro Yearly$29.991 Year
Show 1 more
  • Zeus Pro Max Yearly$149.991 Year

Questions

Is BigOit free?
BigOit is free to download, with no in-app purchases.
Is Zeus free?
Zeus is free to download, with in-app purchases available.
Do BigOit or Zeus have ads?
Neither BigOit nor Zeus shows ads.
Which is updated more often, BigOit or Zeus?
BigOit ships an update every 2 days, and Zeus monthly. Most recently, BigOit was updated on October 28, 2026 and Zeus on October 24, 2026.

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