# Number Series for kids vs Missing Numbers Minds

The clearest difference is in-app purchases: Number Series for kids at none against Missing Numbers Minds's 2. Number Series for kids also leads on iOS requirement (9.0 vs 26.1). Missing Numbers Minds's advantage is update cadence (every 5 months vs every 21 months). On price, ads and device support there is nothing between them.

Both are free to download. Missing Numbers Minds sells 2 one-off in-app purchases. Number Series for kids asks for nothing beyond the download.

Number Series for kids ships an update every 21 months, Missing Numbers Minds every 5 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Number Series for kids | Missing Numbers Minds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/number-series-for-kids/id722797784/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 11 MB | 4 MB |
| Requires iOS | **9.0** | 26.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alakmalak](https://appshunter.io/developer/406782291) | [Juan Fullana](https://appshunter.io/developer/692107580) |

## What reviewers say

### Number Series for kids

[App page](https://appshunter.io/ios/app/number-series-for-kids/id722797784)

This educational game helps children practice speedy calculation accuracy by identifying missing numbers in various series. It offers customizable game settings and four distinct difficulty levels to suit each child's expertise.

**Highlights:** Speedy calculation practice, Identify missing numbers, Customizable game settings, Four difficulty levels, Continuous number series, Odd and even number series

**Features:** macOS Compatibility

**In-app purchases:** none


### Missing Numbers Minds

[App page](https://appshunter.io/ios/app/missing-numbers-minds/id980949764)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation for maintenance. | $0.99 | one-time |
| Extra for develop and maintenance | $0.99 | one-time |


## Frequently asked questions

### Is Number Series for kids free?

Number Series for kids is free to download, with no in-app purchases.

### Is Missing Numbers Minds free?

Missing Numbers Minds is free to download, with in-app purchases available.

### Do Number Series for kids or Missing Numbers Minds have ads?

Neither Number Series for kids nor Missing Numbers Minds shows ads.

### Which is updated more often, Number Series for kids or Missing Numbers Minds?

Number Series for kids ships an update every 21 months, and Missing Numbers Minds every 5 months. Most recently, Number Series for kids was updated on November 1, 2026 and Missing Numbers Minds on October 26, 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.*