# GSSK vs Flow Study

The clearest difference is in-app purchases: GSSK at none against Flow Study's 6. GSSK also leads on iOS requirement (11.0 vs 15.4). On price, ads and device support there is nothing between them.

Both are free to download. Flow Study sells 6 in-app purchases, starting at $8.99 per month. GSSK asks for nothing beyond the download.

## The numbers

| Metric | GSSK | Flow Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 226 MB | 60 MB |
| Requires iOS | **11.0** | 15.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mohammed EL KASMI](https://appshunter.io/developer/1737585970) | [Othmane Bennani](https://appshunter.io/developer/1882722558) |

## What reviewers say

### GSSK

[App page](https://appshunter.io/ios/app/gssk/id6496679733)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flow Study

[App page](https://appshunter.io/ios/app/flow-study/id6776224510)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flow Study Pro | $8.99 | per month |
| Flow Study Max | $17.99 | per month |
| 30 Flow Study Coin | $1.99 | one-time |
| 100 Flow Study Coin | $3.99 | one-time |
| 250 Flow Study Coin | $8.99 | one-time |
| 600 Flow Study Coin | $14.99 | one-time |


## Frequently asked questions

### Is GSSK free?

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

### Is Flow Study free?

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

### Do GSSK or Flow Study have ads?

Neither GSSK nor Flow Study shows ads.

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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.*