# IssieSign vs Sifra

The clearest difference is in-app purchases: IssieSign at none against Sifra's 2. IssieSign also leads on iOS requirement (11.0 vs 17.0). Sifra's advantage is update cadence (every 2 days vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Sifra sells 2 in-app purchases, starting at $2.99 per month. IssieSign asks for nothing beyond the download.

IssieSign ships an update every 9 months, Sifra every 2 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | IssieSign | Sifra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 days** |
| Size | 36 MB | 304 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Beit Issie Shapiro](https://appshunter.io/developer/1189551653) | [Daniel Bar Guy](https://appshunter.io/developer/6811388882) |

## What reviewers say

### IssieSign

[App page](https://appshunter.io/ios/app/issiesign-arabic/id1600435825)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sifra

[App page](https://appshunter.io/ios/app/sifra-math-notes-and-calculator/id6816128240)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | per month |
| Sifra Premium | $6.99 | per month |


## Frequently asked questions

### Is IssieSign free?

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

### Is Sifra free?

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

### Do IssieSign or Sifra have ads?

Neither IssieSign nor Sifra shows ads.

### Which is updated more often, IssieSign or Sifra?

IssieSign ships an update every 9 months, and Sifra every 2 days. Most recently, IssieSign was updated on November 7, 2026 and Sifra on November 10, 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.*