# Corrsy vs B.I.S.F.

The clearest difference is in-app purchases: B.I.S.F. at none against Corrsy's 6. Corrsy's advantage is update cadence (weekly vs monthly) and iOS requirement (13.4 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Corrsy sells 6 one-off in-app purchases. B.I.S.F. asks for nothing beyond the download.

Corrsy ships an update weekly, B.I.S.F. monthly. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Corrsy | B.I.S.F. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (79 ratings)](https://appshunter.io/ios/app/corrsy/id1587328977/reviews)** | — |
| Number of ratings | **79** | — |
| Positive reviews | 88.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 38 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Corrsy Oy Ltd](https://appshunter.io/developer/1569577220) | [Hadi Ezzeddine](https://appshunter.io/developer/1638122399) |

## What reviewers say

### Corrsy

[App page](https://appshunter.io/ios/app/corrsy/id1587328977)

An interactive educational app offering private lessons for Iraqi curricula, from middle school to high school. Features engaging videos, concise summaries, and smart tests explained by top Iraqi educators using modern Finnish teaching methods. Ideal for quick revision before exams.

**Highlights:** Interactive private lessons, Lessons for Iraqi curricula (grades 7-12), Taught by top Iraqi educators, Modern Finnish teaching methods, Concise and fast-paced lessons, Engaging educational videos, Lesson summaries, Smart comprehension tests

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dinar Pack 1 | $1.59 | one-time |
| Dinar Pack 2 | $3.89 | one-time |
| Dinar Pack 3 | $9.99 | one-time |
| Dinar Pack 5 | $38.49 | one-time |
| Dinar Pack 4 | $76.00 | one-time |
| Dinar Pack 6 - 250000 | $190.99 | one-time |


### B.I.S.F.

[App page](https://appshunter.io/ios/app/bisf/id6752570292)

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

**In-app purchases:** none


## Frequently asked questions

### Is Corrsy free?

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

### Is B.I.S.F. free?

B.I.S.F. is free to download, with no in-app purchases.

### Do Corrsy or B.I.S.F. have ads?

Neither Corrsy nor B.I.S.F. shows ads.

### Which is updated more often, Corrsy or B.I.S.F.?

Corrsy ships an update weekly, and B.I.S.F. monthly. Most recently, Corrsy was updated on October 7, 2026 and B.I.S.F. on October 13, 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.*