# Flagis vs OneTodo

The clearest difference is in-app purchases: Flagis at none against OneTodo's 3. Flagis also leads on iOS requirement (15.1 vs 17.6). OneTodo's advantage is update cadence (every 9 days vs every 6 weeks). On price, review sentiment, 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. Flagis asks for nothing beyond the download.

Flagis ships an update every 6 weeks, OneTodo every 9 days. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Flagis | OneTodo |
| --- | --- | --- |
| 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 | 66.7% of reviews | **71.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | **Free** | Subscription |
| Size | 72 MB | 140 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Flagis s.r.o.](https://appshunter.io/developer/1245312910) | [Chengdu Reinvent Technology Co., Ltd.](https://appshunter.io/developer/1250290964) |

## What reviewers say

### Flagis

[App page](https://appshunter.io/ios/app/flagis-to-do-list-and-notes/id1245312971)

Organize tasks and notes with a unique structured view based on your mind map. Share tasks with others, receive clear feedback, and manage everything from any device. Stay on top of deadlines with due dates and reminders.

**Highlights:** Structured task organization, Multi-device synchronization, Task sharing with feedback, Due dates and reminders, File uploads to tasks, Task filtering and search

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Flagis free?

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

### Is OneTodo free?

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

### Do Flagis or OneTodo have ads?

Neither Flagis nor OneTodo shows ads.

### Which is updated more often, Flagis or OneTodo?

Flagis ships an update every 6 weeks, and OneTodo every 9 days. Most recently, Flagis was updated on June 1, 2026 and OneTodo on September 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.*