# Addition Concentrated vs Subtraction Mathematics

The clearest difference is price: Subtraction Mathematics at Free against Addition Concentrated's $0.99. Subtraction Mathematics also leads on update cadence (fortnightly vs every 25 months) and ratings volume (27 vs 2). Addition Concentrated's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 1). On review sentiment, ads and device support there is nothing between them.

Subtraction Mathematics is free to download; Addition Concentrated costs $0.99 up front. Subtraction Mathematics sells 1 one-off in-app purchase. Addition Concentrated asks for nothing beyond the download.

Addition Concentrated holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Subtraction Mathematics has 27 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Addition Concentrated ships an update every 25 months, Subtraction Mathematics fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Addition Concentrated | Subtraction Mathematics |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/addition-concentrated/id548958374/reviews)** | [4.3 (27 ratings)](https://appshunter.io/ios/app/subtraction-mathematics/id1660955330/reviews) |
| Number of ratings | 2 | **27** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 172 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Catherine Vitti](https://appshunter.io/developer/548958377) | [PROGRAMIS PRIME LLC](https://appshunter.io/developer/1051843545) |

## What reviewers say

### Addition Concentrated

[App page](https://appshunter.io/ios/app/addition-concentrated/id548958374)

Practice addition with single to five-digit numbers using two distinct methods. Offers visual customization options for accessibility and large display for classroom use.

**Highlights:** Addition practice, Single to five-digit numerals, Column-by-column method, Multiple choice mode, Customizable background colors, Large numeral display

**Features:** macOS Compatibility

**In-app purchases:** none


### Subtraction Mathematics

[App page](https://appshunter.io/ios/app/subtraction-mathematics/id1660955330)

This math app teaches children multi-digit subtraction with step-by-step guidance and positive reinforcement. It adapts to the student's learning pace, offering practice for beginners and review for older students. Features include AI handwriting recognition and progress monitoring for parents and teachers.

**Highlights:** Multi-digit subtraction with borrowing, Step-by-step instructions, AI handwriting recognition, Progress monitoring with color-coded feedback, Customizable digit combinations, Encouragement-based learning

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get All Features | $3.99 | one-time |


## Frequently asked questions

### Is Addition Concentrated free?

Addition Concentrated costs $0.99, with no in-app purchases.

### Is Subtraction Mathematics free?

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

### Which has better reviews, Addition Concentrated or Subtraction Mathematics?

Addition Concentrated is rated higher. Addition Concentrated averages 5.0 out of 5 from 2 ratings, while Subtraction Mathematics averages 4.3 from 27 ratings.

### Do Addition Concentrated or Subtraction Mathematics have ads?

Neither Addition Concentrated nor Subtraction Mathematics shows ads.

### Which is updated more often, Addition Concentrated or Subtraction Mathematics?

Addition Concentrated ships an update every 25 months, and Subtraction Mathematics fortnightly. Most recently, Addition Concentrated was updated on October 24, 2026 and Subtraction Mathematics on October 24, 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.*