# Calculatrix vs ScrollBuster

The clearest difference is in-app purchases: Calculatrix at none against ScrollBuster's 3. Calculatrix also leads on iOS requirement (11.0 vs 15.6). ScrollBuster's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. ScrollBuster sells 3 in-app purchases, starting at $2.99 per 7 days. Calculatrix asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Calculatrix | ScrollBuster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | Every 4 months |
| Size | 30 MB | 39 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kangah Jacques N'GUESSAN](https://appshunter.io/developer/1161253245) | [Tarun Khatri](https://appshunter.io/developer/1660189963) |

## What reviewers say

### Calculatrix

[App page](https://appshunter.io/ios/app/calculatrix/id1448024245)

**Features:** macOS Compatibility

**In-app purchases:** none


### ScrollBuster

[App page](https://appshunter.io/ios/app/scrollbuster-stop-doomscroll/id6756539327)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ScrollBuster Weekly | $2.99 | per 7 days |
| ScrollBuster Annual | $19.99 | per year |
| ScrollBuster Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is Calculatrix free?

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

### Is ScrollBuster free?

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

### Do Calculatrix or ScrollBuster have ads?

Calculatrix shows ads; ScrollBuster does not.

### Which is updated more often, Calculatrix or ScrollBuster?

Calculatrix ships an update every 4 months, and ScrollBuster every 4 months. Most recently, Calculatrix was updated on October 8, 2026 and ScrollBuster on October 18, 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.*