# Scroll Brake vs Acadeller Spark

The clearest difference is iOS requirement: Acadeller Spark at 17.6 against Scroll Brake's 26.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Scroll Brake sells 3 in-app purchases, starting at $3.99 per month and Acadeller Spark sells 3 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scroll Brake ships an update every 9 days, Acadeller Spark every 8 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Scroll Brake | Acadeller Spark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/scroll-brake-math-app-blocker/id6779527014/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 8 days** |
| Monetization | Freemium | — |
| Size | 6 MB | 142 MB |
| Requires iOS | 26.5 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NovaSynapse OU](https://appshunter.io/developer/1761558356) | [Cesar Alvarez Llaneza](https://appshunter.io/developer/1869692376) |

## What reviewers say

### Scroll Brake

[App page](https://appshunter.io/ios/app/scroll-brake-math-app-blocker/id6779527014)

This app helps you manage screen time by presenting quick math challenges when your app usage limit is reached. It encourages conscious choices over automatic reactions to boredom, allowing discreet use anywhere. Track your progress and gain intentional focus time back.

**Highlights:** Adaptive math difficulty, Strict mode for hard limits, Discreet mental math unlocks, Daily discipline, no exceptions, App and website limits, Screen time statistics

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $12.99 | per year |
| Lifetime | $17.99 | one-time |


### Acadeller Spark

[App page](https://appshunter.io/ios/app/acadeller-spark-screen-time/id6801905033)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $8.99 | per 7 days |
| Premium Annual Trial | $44.99 | per year |
| Premium Annual | $49.99 | per year |


## Frequently asked questions

### Is Scroll Brake free?

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

### Is Acadeller Spark free?

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

### Do Scroll Brake or Acadeller Spark have ads?

Neither Scroll Brake nor Acadeller Spark shows ads.

### Which is updated more often, Scroll Brake or Acadeller Spark?

Scroll Brake ships an update every 9 days, and Acadeller Spark every 8 days. Most recently, Scroll Brake was updated on October 31, 2026 and Acadeller Spark on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*