# Column Subtraction vs MathMe.io

The clearest difference is price: MathMe.io at Free against Column Subtraction's $3.99. MathMe.io also leads on update cadence (every 5 weeks vs every 8 months) and iOS requirement (15.0 vs 17.6). Column Subtraction's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

MathMe.io is free to download; Column Subtraction costs $3.99 up front. MathMe.io sells 2 one-off in-app purchases. Column Subtraction asks for nothing beyond the download.

Column Subtraction ships an update every 8 months, MathMe.io every 5 weeks. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Column Subtraction | MathMe.io |
| --- | --- | --- |
| 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** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Monetization | Paid | — |
| Size | 19 MB | 40 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Esa Helttula](https://appshunter.io/developer/339440196) | [Dmitrii Raev](https://appshunter.io/developer/1455371959) |

## 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


### MathMe.io

[App page](https://appshunter.io/ios/app/mathmeio/id1455371960)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support | $0.99 | one-time |
| Premium Membership | $9.99 | one-time |


## Frequently asked questions

### Is Column Subtraction free?

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

### Is MathMe.io free?

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

### Do Column Subtraction or MathMe.io have ads?

MathMe.io shows ads; Column Subtraction does not.

### Which is updated more often, Column Subtraction or MathMe.io?

Column Subtraction ships an update every 8 months, and MathMe.io every 5 weeks. Most recently, Column Subtraction was updated on October 8, 2026 and MathMe.io on October 13, 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.*