# Column Subtraction vs Rounding Numbers School

The clearest difference is rating: Rounding Numbers School at 5.0 against Column Subtraction's 4.3. Rounding Numbers School also leads on iOS requirement (15.0 vs 17.6). Column Subtraction's advantage is ads (none vs shown) and ratings volume (6 vs 1). On update cadence, in-app purchases, monetization model and device support there is nothing between them.

Column Subtraction costs $3.99 and Rounding Numbers School $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rounding Numbers School holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Column Subtraction has 6 ratings behind it against 1, so its average is the more settled of the two.

Column Subtraction ships an update every 8 months, Rounding Numbers School every 12 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Column Subtraction | Rounding Numbers School |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/column-subtraction/id341040894/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rounding-numbers-school/id783470722/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 8 months** | Every 12 months |
| Monetization | Paid | Paid |
| Size | 19 MB | 14 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Esa Helttula](https://appshunter.io/developer/339440196) | [Horizon Business, Inc.](https://appshunter.io/developer/431586531) |

## 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


### Rounding Numbers School

[App page](https://appshunter.io/ios/app/rounding-numbers-school/id783470722)

Practice and test your skills in rounding numbers with this educational app. It offers various modes and options to help you master rounding decimals, whole numbers, and more place values. Play until you achieve mastery.

**Highlights:** Rounding decimals, Rounding whole numbers, Multiple place values, Practice mode, Quiz mode, Customizable problem count

**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 Rounding Numbers School free?

Rounding Numbers School costs $4.99, with no in-app purchases.

### Which has better reviews, Column Subtraction or Rounding Numbers School?

Rounding Numbers School is rated higher. Column Subtraction averages 4.3 out of 5 from 6 ratings, while Rounding Numbers School averages 5.0 from 1 ratings.

### Do Column Subtraction or Rounding Numbers School have ads?

Rounding Numbers School shows ads; Column Subtraction does not.

### Which is updated more often, Column Subtraction or Rounding Numbers School?

Column Subtraction ships an update every 8 months, and Rounding Numbers School every 12 months. Most recently, Column Subtraction was updated on October 12, 2026 and Rounding Numbers School 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.*