# Obius vs Doc Translator

The clearest difference is update cadence: Doc Translator at daily against Obius's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Obius sells 4 in-app purchases, starting at $4.99 per month and Doc Translator sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Obius ships an update weekly, Doc Translator daily. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Obius | Doc Translator |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Freemium | — |
| Size | 23 MB | 18 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Demetri Hodges](https://appshunter.io/developer/1886797794) | [炜桢 吕](https://appshunter.io/developer/1597907877) |

## 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 |


### Doc Translator

[App page](https://appshunter.io/ios/app/doc-translator-pdf-epub-ocr/id6810911331)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Credits | $2.99 | one-time |
| 300 Credits | $7.99 | one-time |
| 1000 Credits | $24.99 | one-time |
| 3000 Credits | $69.99 | one-time |


## Frequently asked questions

### Is Obius free?

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

### Is Doc Translator free?

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

### Do Obius or Doc Translator have ads?

Neither Obius nor Doc Translator shows ads.

### Which is updated more often, Obius or Doc Translator?

Obius ships an update weekly, and Doc Translator daily. Most recently, Obius was updated on October 5, 2026 and Doc Translator on October 12, 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.*