# AboutNumbers vs Sing Songo

The clearest difference is in-app purchases: Sing Songo at none against AboutNumbers's 1. Sing Songo also leads on update cadence (every 2 months vs every 11 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. AboutNumbers sells 1 one-off in-app purchase. Sing Songo asks for nothing beyond the download.

AboutNumbers ships an update every 11 months, Sing Songo every 2 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | AboutNumbers | Sing Songo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Size | 103 MB | 60 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IntegraTools GmbH](https://appshunter.io/developer/618103816) | [Musiko Musika](https://appshunter.io/developer/1555056776) |

## What reviewers say

### AboutNumbers

[App page](https://appshunter.io/ios/app/aboutnumbers/id1089468265)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All exercises | $44.99 | one-time |


### Sing Songo

[App page](https://appshunter.io/ios/app/sing-songo/id1555056774)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AboutNumbers free?

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

### Is Sing Songo free?

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

### Do AboutNumbers or Sing Songo have ads?

Neither AboutNumbers nor Sing Songo shows ads.

### Which is updated more often, AboutNumbers or Sing Songo?

AboutNumbers ships an update every 11 months, and Sing Songo every 2 months. Most recently, AboutNumbers was updated on October 26, 2026 and Sing Songo on November 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.*