# NumbBrain vs SparkRing

The clearest difference is in-app purchases: SparkRing at none against NumbBrain's 3. SparkRing also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. NumbBrain sells 3 in-app purchases, starting at $0.99 per month. SparkRing asks for nothing beyond the download.

## The numbers

| Metric | NumbBrain | SparkRing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 14 MB | 6 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [笛 姜](https://appshunter.io/developer/1561507357) | [鑫 宋](https://appshunter.io/developer/1886011792) |

## What reviewers say

### NumbBrain

[App page](https://appshunter.io/ios/app/numbbrain-screen-time-control/id6751564003)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Annual Premium | $2.99 | per year |
| Lifetime Premium | $5.99 | one-time |


### SparkRing

[App page](https://appshunter.io/ios/app/sparkring/id6760737774)

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

**In-app purchases:** none


## Frequently asked questions

### Is NumbBrain free?

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

### Is SparkRing free?

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

### Do NumbBrain or SparkRing have ads?

Neither NumbBrain nor SparkRing 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.*