# NumBurst vs Pi Digits

The clearest difference is in-app purchases: Pi Digits at none against NumBurst's 2. NumBurst's advantage is update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NumBurst sells 2 in-app purchases, starting at $3.99 per month. Pi Digits asks for nothing beyond the download.

NumBurst ships an update every 3 days, Pi Digits monthly. The most recent releases landed on September 7, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | NumBurst | Pi Digits |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pi-digits-memory-challenge/id6467522843/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | — | Free |
| Size | 11 MB | 11 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [STRICS IT GmbH](https://appshunter.io/developer/1498799328) | [Slavka Polanova](https://appshunter.io/developer/1708764553) |

## What reviewers say

### NumBurst

[App page](https://appshunter.io/ios/app/numburst-math-adventure/id6449527149)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NumBurst Pro | $3.99 | per month |
| NumBurst Pro | $39.99 | per year |


### Pi Digits

[App page](https://appshunter.io/ios/app/pi-digits-memory-challenge/id6467522843)

Test your ability to memorize and recall digits of Pi. Engage in fast-paced challenges to extend your streak and improve your number recall. Ideal for students, puzzle enthusiasts, or anyone seeking a quick mental workout.

**Highlights:** Memorize digits of Pi, Classic typing mode, Timed Blitz mode, Track best streaks, Quick brain workouts, Suitable for all levels

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is NumBurst free?

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

### Is Pi Digits free?

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

### Do NumBurst or Pi Digits have ads?

Neither NumBurst nor Pi Digits shows ads.

### Which is updated more often, NumBurst or Pi Digits?

NumBurst ships an update every 3 days, and Pi Digits monthly. Most recently, NumBurst was updated on September 7, 2026 and Pi Digits on September 3, 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.*