Comparison

Cortex vs OffNote AI

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

Head to head
About

Cortex

Features
Read full description

Cortex is your private, on-device AI planner for daily work and life. Use Cortex to understand your calendar, spot conflicts, and turn plans into action quickly. Key features: โ€ข Calendar-aware dashboard with priority signals โ€ข Chat that can summarize your schedule and create events โ€ข Smart insights and proactive recommendations โ€ข Image-aware chat support โ€ข Local-first AI processing for privacy โ€ข Notification nudges and quiet hours controls Cortex is built to help you stay focused without sending your planning data to external AI services.

About

OffNote AI

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OffNote AI turns your notes into a private knowledge base you can actually talk to. Write a memo, and OffNote AI quietly extracts the facts. Later, ask a question in plain language โ€” who did I meet last Tuesday? what was that restaurant recommendation? โ€” and get a direct answer from your own notes. Everything runs on your device. No data is sent to any server. No account required. HOW IT WORKS OffNote AI downloads a small AI model to your phone during setup. After that one-time download, it works completely offline. Your notes never leave your device โ€” not even to generate answers. KEY FEATURES - Write and search notes with a clean, fast interface - AI automatically extracts key facts when you save - Chat with your notes: ask questions in natural language - Focus mode: ask about one specific note in depth - Conversation history across multiple chat sessions - Fully offline after the initial model download - No account, no subscription, no cloud storage - Choose from multiple on-device AI models in Settings WHY OFFNOTE AI? Most AI apps send your notes to a remote server to generate answers. OffNote AI runs the model locally, so your personal thoughts, plans, and records stay yours โ€” always.

Screenshots

Cortex4 screens

Verdict

The call

The clearest difference is device support: Cortex at 2 against OffNote AI's โ€”. OffNote AI's advantage is iOS requirement (15.1 vs 17.0). On price and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences ยท 3 level
Cortex versus OffNote AI: the parameters behind the verdict, then further details
ParameterCortexOffNote AI
PriceFreeFree
AdsYesโ€”
In-app purchasesNoNo
DevicesiPhone, iPad โ€” betterโ€”
Requires iOS17.015.1 โ€” better
Further details โ€” not scored
Size7 MB58 MB
Age rating4+4+
DeveloperPratik PoudelWonbin Kim

In-app purchases

None

Cortex

No in-app purchases

None

OffNote AI

No in-app purchases

Questions

Is Cortex free?
Cortex is free to download, with no in-app purchases.
Is OffNote AI free?
OffNote AI is free to download, with no in-app purchases.

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