# OneTodo vs RMOS TASK

The clearest difference is in-app purchases: RMOS TASK at none against OneTodo's 3. RMOS TASK also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OneTodo sells 3 in-app purchases, starting at $0.99 per month. RMOS TASK asks for nothing beyond the download.

OneTodo ships an update every 9 days, RMOS TASK every 2 weeks. The most recent releases landed on September 26, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | OneTodo | RMOS TASK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/onetodo-personal-task-system/id1546530435/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Subscription | — |
| Size | 140 MB | 34 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Chengdu Reinvent Technology Co., Ltd.](https://appshunter.io/developer/1250290964) | [Rmos Systems Rmos](https://appshunter.io/developer/1371426397) |

## What reviewers say

### OneTodo

[App page](https://appshunter.io/ios/app/onetodo-personal-task-system/id1546530435)

Organize your life with a hierarchical task management system. Create tasks, pages, projects, boxes, and spaces to structure your to-do list and plans. Track project progress and manage separate data spaces for different aspects of your life.

**Highlights:** Hierarchical task organization (Task > Page > Project > Box > Space), Create standalone tasks, Use pages as project subtitles, Track project completion progress, Group projects with boxes, Separate data spaces for internal accounts

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneTodo Pro (Monthly) | $0.99 | per month |
| OneTodo Pro (Yearly) | $6.99 | per year |
| OneTodo Pro (Lifetime) | $14.99 | one-time |


### RMOS TASK

[App page](https://appshunter.io/ios/app/rmos-task/id6756488765)

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

**In-app purchases:** none


## Frequently asked questions

### Is OneTodo free?

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

### Is RMOS TASK free?

RMOS TASK is free to download, with no in-app purchases.

### Do OneTodo or RMOS TASK have ads?

Neither OneTodo nor RMOS TASK shows ads.

### Which is updated more often, OneTodo or RMOS TASK?

OneTodo ships an update every 9 days, and RMOS TASK every 2 weeks. Most recently, OneTodo was updated on September 26, 2026 and RMOS TASK on October 9, 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.*