# Double Train vs Fruit Formula

The clearest difference is in-app purchases: Double Train at none against Fruit Formula's 4. Double Train also leads on iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Fruit Formula sells 4 one-off in-app purchases. Double Train asks for nothing beyond the download.

## The numbers

| Metric | Double Train | Fruit Formula |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/fruit-formula-math-puzzle/id6766002418/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 10 days |
| Monetization | — | Free with in-app purchases |
| Size | 129 MB | 57 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bugbomb](https://appshunter.io/developer/1440148721) | [Bao Huynh](https://appshunter.io/developer/1877019792) |

## What reviewers say

### Double Train

[App page](https://appshunter.io/ios/app/double-train/id6742326706)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fruit Formula

[App page](https://appshunter.io/ios/app/fruit-formula-math-puzzle/id6766002418)

Solve colorful logic puzzles by deciphering fruit equations and discovering hidden number values. This game sharpens logic, math, and pattern recognition skills with quick, satisfying challenges.

**Highlights:** Solve fruit equation puzzles, Practice logic and math, Pattern recognition challenges, Quick levels, Hint system, Colorful visuals

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Hints | $0.99 | one-time |
| 30 Hints | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 85 Hints | $3.99 | one-time |


## Frequently asked questions

### Is Double Train free?

Double Train is free to download, with no in-app purchases.

### Is Fruit Formula free?

Fruit Formula is free to download, with in-app purchases available.

### Do Double Train or Fruit Formula have ads?

Both Double Train and Fruit Formula show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*