# Signature Approval vs Dooit App

The clearest difference is update cadence: Dooit App at every 5 weeks against Signature Approval's every 32 months. Dooit App also leads on iOS requirement (15.1 vs 17.0). 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.

Signature Approval ships an update every 32 months, Dooit App every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Signature Approval | Dooit App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 5 weeks** |
| Size | 10 MB | 52 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Swisscom (Switzerland) Ltd.](https://appshunter.io/developer/331127724) | [DOOIT APP SARL](https://appshunter.io/developer/1755182692) |

## What reviewers say

### Signature Approval

[App page](https://appshunter.io/ios/app/signature-approval/id6464310440)

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

**In-app purchases:** none


### Dooit App

[App page](https://appshunter.io/ios/app/dooit-app/id6505110334)

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

**In-app purchases:** none


## Frequently asked questions

### Is Signature Approval free?

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

### Is Dooit App free?

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

### Do Signature Approval or Dooit App have ads?

Neither Signature Approval nor Dooit App shows ads.

### Which is updated more often, Signature Approval or Dooit App?

Signature Approval ships an update every 32 months, and Dooit App every 5 weeks. Most recently, Signature Approval was updated on November 3, 2026 and Dooit App on November 4, 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.*