# Trade vs Subtraction Mathematics

The clearest difference is price: Subtraction Mathematics at Free against Trade's $3.99. Subtraction Mathematics also leads on update cadence (fortnightly vs every 8 months) and ratings volume (27 vs 1). Trade's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 1). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Subtraction Mathematics is free to download; Trade costs $3.99 up front. Subtraction Mathematics sells 1 one-off in-app purchase. Trade asks for nothing beyond the download.

Trade 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 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Trade ships an update every 8 months, Subtraction Mathematics fortnightly. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Trade | Subtraction Mathematics |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trade-first-subtraction/id351022585/reviews)** | [4.3 (27 ratings)](https://appshunter.io/ios/app/subtraction-mathematics/id1660955330/reviews) |
| Number of ratings | 1 | **27** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 172 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Esa Helttula](https://appshunter.io/developer/339440196) | [PROGRAMIS PRIME LLC](https://appshunter.io/developer/1051843545) |

## What reviewers say

### Trade

[App page](https://appshunter.io/ios/app/trade-first-subtraction/id351022585)

This educational app teaches and reinforces the trade-first subtraction method with interactive, step-by-step animations. Users can practice with customizable numbers and settings, receiving immediate feedback on their work. It's designed to be an intuitive tool for mastering subtraction strategies.

**Highlights:** Interactive trade-first subtraction method, Customizable number of digits (2-5), Random and custom problem generation, Step-by-step animated borrowing, Customizable interface colors and animations, Immediate feedback on answers

**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 Trade free?

Trade costs $3.99, with no in-app purchases.

### Is Subtraction Mathematics free?

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

### Which has better reviews, Trade or Subtraction Mathematics?

Trade is rated higher. Trade averages 5.0 out of 5 from 1 ratings, while Subtraction Mathematics averages 4.3 from 27 ratings.

### Do Trade or Subtraction Mathematics have ads?

Neither Trade nor Subtraction Mathematics shows ads.

### Which is updated more often, Trade or Subtraction Mathematics?

Trade ships an update every 8 months, and Subtraction Mathematics fortnightly. Most recently, Trade was updated on October 12, 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.*