# Index ∙ Lists & Tasks vs Obius

The clearest difference is iOS requirement: Obius at 17.0 against Index ∙ Lists & Tasks's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Index ∙ Lists & Tasks sells 2 in-app purchases, starting at $1.99 per month and Obius sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Index ∙ Lists & Tasks ships an update every 10 days, Obius weekly. The most recent releases landed on September 17, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Index ∙ Lists & Tasks | Obius |
| --- | --- | --- |
| 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 | Every 10 days | **Weekly** |
| Monetization | — | Freemium |
| Size | 32 MB | 23 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Giulio Pimenoff Verdolin](https://appshunter.io/developer/1713066184) | [Demetri Hodges](https://appshunter.io/developer/1886797794) |

## What reviewers say

### Index ∙ Lists & Tasks

[App page](https://appshunter.io/ios/app/index-lists-and-tasks/id6743499824)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | per month |
| Pro | $19.99 | per year |


### 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 |


## Frequently asked questions

### Is Index ∙ Lists & Tasks free?

Index ∙ Lists & Tasks is free to download, with in-app purchases available.

### Is Obius free?

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

### Do Index ∙ Lists & Tasks or Obius have ads?

Neither Index ∙ Lists & Tasks nor Obius shows ads.

### Which is updated more often, Index ∙ Lists & Tasks or Obius?

Index ∙ Lists & Tasks ships an update every 10 days, and Obius weekly. Most recently, Index ∙ Lists & Tasks was updated on September 17, 2026 and Obius on October 5, 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.*