# O vs To Do List

The clearest difference is in-app purchases: O at none against To Do List's 3. O also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. To Do List sells 3 in-app purchases, starting at $1.49 per month. O asks for nothing beyond the download.

O ships an update every 3 weeks, To Do List every 2 months. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | O | To Do List |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/to-do-list-tasks-and-reminders/id1530634175/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Freemium |
| Size | 16 MB | 212 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [O-TECH JAPAN](https://appshunter.io/developer/1219186631) | [Planning Technologies LLC](https://appshunter.io/developer/1618240887) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-techmobile/id1246072028)

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

**In-app purchases:** none


### To Do List

[App page](https://appshunter.io/ios/app/to-do-list-tasks-and-reminders/id1530634175)

This app combines task management with note-taking capabilities, offering features like reminders, sorting, filtering, and synchronization with your phone's native reminder app. It provides a free basic version with optional paid features for enhanced functionality.

**Highlights:** Task management with reminders, Note creation and editing, Synchronization with phone reminders, Sorting and filtering tasks, Customizable accounts with colors, Day and night interface modes, Attaching files to tasks

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access for a Month | $1.49 | per month |
| Full Access for a Year | $11.99 | per year |
| Full Access Forever | $19.99 | one-time |


## Frequently asked questions

### Is O free?

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

### Is To Do List free?

To Do List is free to download, with in-app purchases available.

### Do O or To Do List have ads?

Neither O nor To Do List shows ads.

### Which is updated more often, O or To Do List?

O ships an update every 3 weeks, and To Do List every 2 months. Most recently, O was updated on October 26, 2026 and To Do List on October 7, 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.*