# Subtraction Math Trainer vs The Blue Map

The clearest difference is in-app purchases: Subtraction Math Trainer at none against The Blue Map's 1. Subtraction Math Trainer also leads on price ($2.99 vs $3.99). The Blue Map's advantage is update cadence (every 3 weeks vs every 34 months). On ads, device support and iOS requirement there is nothing between them.

Subtraction Math Trainer costs $2.99 and The Blue Map $3.99 up front. The Blue Map sells 1 one-off in-app purchase. Subtraction Math Trainer asks for nothing beyond the download.

Subtraction Math Trainer ships an update every 34 months, The Blue Map every 3 weeks. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Subtraction Math Trainer | The Blue Map |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 18 MB | 230 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [Mikolaj Adamowicz](https://appshunter.io/developer/1448003183) |

## What reviewers say

### Subtraction Math Trainer

[App page](https://appshunter.io/ios/app/subtraction-math-trainer/id1197851863)

**Features:** macOS Compatibility

**In-app purchases:** none


### The Blue Map

[App page](https://appshunter.io/ios/app/the-blue-map/id1482526303)

Explore the world with an interactive map displaying detailed information about every country. Compare nations, visualize data, and answer curious questions about global statistics.

**Highlights:** Interactive world map, Detailed country statistics, Country comparisons, Data visualizations, Global trivia, Educational content

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Map | $1.99 | one-time |


## Frequently asked questions

### Is Subtraction Math Trainer free?

Subtraction Math Trainer costs $2.99, with no in-app purchases.

### Is The Blue Map free?

The Blue Map costs $3.99, and also offers in-app purchases.

### Do Subtraction Math Trainer or The Blue Map have ads?

Neither Subtraction Math Trainer nor The Blue Map shows ads.

### Which is updated more often, Subtraction Math Trainer or The Blue Map?

Subtraction Math Trainer ships an update every 34 months, and The Blue Map every 3 weeks. Most recently, Subtraction Math Trainer was updated on October 31, 2026 and The Blue Map on November 3, 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.*