# Column Subtraction vs KidMath GLB

The clearest difference is price: KidMath GLB at Free against Column Subtraction's $3.99. KidMath GLB also leads on iOS requirement (12.0 vs 17.6). Column Subtraction's advantage is ads (none vs shown) and update cadence (every 8 months vs every 56 months). On in-app purchases and device support there is nothing between them.

KidMath GLB is free to download; Column Subtraction costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Column Subtraction ships an update every 8 months, KidMath GLB every 56 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Column Subtraction | KidMath GLB |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/column-subtraction/id341040894/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 8 months** | Every 56 months |
| Monetization | Paid | — |
| Size | 19 MB | 11 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Esa Helttula](https://appshunter.io/developer/339440196) | [gangadhar goud](https://appshunter.io/developer/898647800) |

## What reviewers say

### Column Subtraction

[App page](https://appshunter.io/ios/app/column-subtraction/id341040894)

This educational app teaches and reinforces the column subtraction method. It offers an interactive interface with customizable settings for solving random or custom problems. The app includes a puzzle feature that unlocks as users solve math problems.

**Highlights:** Column subtraction method teaching, Interactive and customizable interface, Random and custom problem solving, Adjustable number of digits, Step-by-step renaming animation, Picture puzzle reward system

**Features:** macOS Compatibility

**In-app purchases:** none


### KidMath GLB

[App page](https://appshunter.io/ios/app/kidmath-glb/id1543535118)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Column Subtraction free?

Column Subtraction costs $3.99, with no in-app purchases.

### Is KidMath GLB free?

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

### Do Column Subtraction or KidMath GLB have ads?

KidMath GLB shows ads; Column Subtraction does not.

### Which is updated more often, Column Subtraction or KidMath GLB?

Column Subtraction ships an update every 8 months, and KidMath GLB every 56 months. Most recently, Column Subtraction was updated on October 8, 2026 and KidMath GLB on October 7, 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.*