# BioScroll Revision vs Flash Stack

The clearest difference is in-app purchases: Flash Stack at none against BioScroll Revision's 3. BioScroll Revision's advantage is iOS requirement (16.0 vs 18.6). On price there is nothing between them.

Both are free to download. BioScroll Revision sells 3 in-app purchases, starting at $4.99 per month. Flash Stack asks for nothing beyond the download.

## The numbers

| Metric | BioScroll Revision | Flash Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 3 days |
| Size | 35 MB | 8 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Amber Cook](https://appshunter.io/developer/1887207493) | [Reuben Enterprises Ltd](https://appshunter.io/developer/1804593784) |

## What reviewers say

### BioScroll Revision

[App page](https://appshunter.io/ios/app/bioscroll-revision/id6760999192)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioScroll Premium | $4.99 | per month |
| BioScroll Premium | $34.99 | per year |
| BioScroll Premium | $59.99 | one-time |


### Flash Stack

[App page](https://appshunter.io/ios/app/flash-stack-revision-cards/id6763527608)

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

**In-app purchases:** none


## Frequently asked questions

### Is BioScroll Revision free?

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

### Is Flash Stack free?

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

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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.*