# Bookapp school vs ViscoelasticsApp

The clearest difference is in-app purchases: Bookapp school at none against ViscoelasticsApp's 2. ViscoelasticsApp's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ViscoelasticsApp sells 2 in-app purchases, starting at $4.99 per month. Bookapp school asks for nothing beyond the download.

Bookapp school ships an update every 2 weeks, ViscoelasticsApp every 4 days. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Bookapp school | ViscoelasticsApp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 76 MB | 42 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [EME Marketing & Consulting](https://appshunter.io/developer/1643927178) | [MongiCore](https://appshunter.io/developer/1896712619) |

## What reviewers say

### Bookapp school

[App page](https://appshunter.io/ios/app/bookapp-school/id6468892997)

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

**In-app purchases:** none


### ViscoelasticsApp

[App page](https://appshunter.io/ios/app/viscoelasticsapp/id6770065023)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $44.99 | per year |


## Frequently asked questions

### Is Bookapp school free?

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

### Is ViscoelasticsApp free?

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

### Do Bookapp school or ViscoelasticsApp have ads?

Neither Bookapp school nor ViscoelasticsApp shows ads.

### Which is updated more often, Bookapp school or ViscoelasticsApp?

Bookapp school ships an update every 2 weeks, and ViscoelasticsApp every 4 days. Most recently, Bookapp school was updated on October 17, 2026 and ViscoelasticsApp on October 14, 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.*