# ProChart Mobile vs OttoTasks

The clearest difference is update cadence: OttoTasks at weekly against ProChart Mobile's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

ProChart Mobile ships an update every 3 weeks, OttoTasks weekly. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | ProChart Mobile | OttoTasks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 99 MB | 104 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Critical Control](https://appshunter.io/developer/1370280574) | [CarbonAi](https://appshunter.io/developer/1801305640) |

## What reviewers say

### ProChart Mobile

[App page](https://appshunter.io/ios/app/prochart-mobile/id1614226968)

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

**In-app purchases:** none


### OttoTasks

[App page](https://appshunter.io/ios/app/ottotasks/id6743130980)

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

**In-app purchases:** none


## Frequently asked questions

### Is ProChart Mobile free?

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

### Is OttoTasks free?

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

### Do ProChart Mobile or OttoTasks have ads?

Neither ProChart Mobile nor OttoTasks shows ads.

### Which is updated more often, ProChart Mobile or OttoTasks?

ProChart Mobile ships an update every 3 weeks, and OttoTasks weekly. Most recently, ProChart Mobile was updated on September 14, 2026 and OttoTasks 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.*