# Obius vs AutoCorrect AI

The clearest difference is in-app purchases: AutoCorrect AI at none against Obius's 4. AutoCorrect AI also leads on update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Obius sells 4 in-app purchases, starting at $4.99 per month. AutoCorrect AI asks for nothing beyond the download.

Obius ships an update weekly, AutoCorrect AI daily. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Obius | AutoCorrect AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obius-notes-that-evolve/id6760918821/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Freemium | — |
| Size | 23 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Demetri Hodges](https://appshunter.io/developer/1886797794) | [Tony Schwartz](https://appshunter.io/developer/308530017) |

## What reviewers say

### Obius

[App page](https://appshunter.io/ios/app/obius-notes-that-evolve/id6760918821)

This app offers a visual workspace for organizing notes and ideas. It allows for reusable content blocks, color-coded sections for intent, and AI-powered features for content generation and semantic search. It prioritizes privacy with local-first storage and end-to-end encryption.

**Highlights:** Visual workspace for notes and ideas, Reusable content blocks (Loops), Color-coded sections by intent, AI-powered content generation and search, Version history and snapshots, Offline functionality and end-to-end encryption

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Obius Pro Founder | $4.99 | per month |
| Obius Pro Monthly | $9.99 | per month |
| Pro Annual | $79.99 | per year |
| Power Pack | $9.99 | one-time |


### AutoCorrect AI

[App page](https://appshunter.io/ios/app/autocorrect-ai/id6785289731)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Obius free?

Obius is free to download, with in-app purchases available.

### Is AutoCorrect AI free?

AutoCorrect AI is free to download, with no in-app purchases.

### Do Obius or AutoCorrect AI have ads?

Neither Obius nor AutoCorrect AI shows ads.

### Which is updated more often, Obius or AutoCorrect AI?

Obius ships an update weekly, and AutoCorrect AI daily. Most recently, Obius was updated on October 5, 2026 and AutoCorrect AI on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*