# UpDiagram vs O2 Task

The clearest difference is iOS requirement: O2 Task at 12.0 against UpDiagram's 16.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on June 1, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | UpDiagram | O2 Task |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/updiagram/id1470250338/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | — |
| Size | 40 MB | 37 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ITC Group](https://appshunter.io/developer/1470250337) | [O2 VN Tech.,JSC](https://appshunter.io/developer/1547745523) |

## What reviewers say

### UpDiagram

[App page](https://appshunter.io/ios/app/updiagram/id1470250338)

This project management tool streamlines project oversight, reducing the time and effort required to manage tasks. It fosters transparency and collaboration within teams, making project progress easily accessible to all members.

**Highlights:** Project progress visibility, Simplified task management, Direct team communication, Transparent information sharing, Up-to-date software features

**Features:** macOS Compatibility

**In-app purchases:** none


### O2 Task

[App page](https://appshunter.io/ios/app/o2-task/id1556588653)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UpDiagram free?

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

### Is O2 Task free?

O2 Task is free to download, with no in-app purchases.

### Do UpDiagram or O2 Task have ads?

Neither UpDiagram nor O2 Task shows ads.

### Which is updated more often, UpDiagram or O2 Task?

UpDiagram ships an update weekly, and O2 Task weekly. Most recently, UpDiagram was updated on June 1, 2026 and O2 Task on September 15, 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.*