# NumbBrain vs Appointment Countdown

The clearest difference is in-app purchases: Appointment Countdown at none against NumbBrain's 3. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | NumbBrain | Appointment Countdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 14 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [笛 姜](https://appshunter.io/developer/1561507357) | [Mohammed Alsuhaymi](https://appshunter.io/developer/1894989962) |

## 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 |


### Appointment Countdown

[App page](https://appshunter.io/ios/app/appointment-countdown/id6762740674)

**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 Appointment Countdown free?

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

### Do NumbBrain or Appointment Countdown have ads?

Neither NumbBrain nor Appointment Countdown 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.*