# WriteBack vs Sorra

The clearest difference is in-app purchases: WriteBack at none against Sorra's 1. WriteBack also leads on iOS requirement (13.0 vs 18.0). Sorra's advantage is update cadence (every 2 days vs every 5 days). On price, ads and device support there is nothing between them.

Both are free to download. Sorra sells 1 one-off in-app purchase. WriteBack asks for nothing beyond the download.

WriteBack ships an update every 5 days, Sorra every 2 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | WriteBack | Sorra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 18 MB | 2 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Markovate](https://appshunter.io/developer/1605748573) | [Vegza Club](https://appshunter.io/developer/1646807988) |

## What reviewers say

### WriteBack

[App page](https://appshunter.io/ios/app/writeback/id1605748571)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sorra

[App page](https://appshunter.io/ios/app/sorra-messages-to-strangers/id6761330585)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +10 Mesazhe | $0.99 | one-time |


## Frequently asked questions

### Is WriteBack free?

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

### Is Sorra free?

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

### Do WriteBack or Sorra have ads?

Neither WriteBack nor Sorra shows ads.

### Which is updated more often, WriteBack or Sorra?

WriteBack ships an update every 5 days, and Sorra every 2 days. Most recently, WriteBack was updated on November 3, 2026 and Sorra on October 25, 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.*