# Flippy the Train vs ThinkWire

The clearest difference is in-app purchases: Flippy the Train at none against ThinkWire's 1. Flippy the Train also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. ThinkWire sells 1 one-off in-app purchase. Flippy the Train asks for nothing beyond the download.

Flippy the Train ships an update every 6 months, ThinkWire every 4 months. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Flippy the Train | ThinkWire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/flippy-the-train/id957889052/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 3 MB | 15 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Karl Voskuil](https://appshunter.io/developer/957889051) | [hamam alabdulla](https://appshunter.io/developer/1562896225) |

## What reviewers say

### Flippy the Train

[App page](https://appshunter.io/ios/app/flippy-the-train/id957889052)

Solve digital circuitry puzzles by building train tracks that model logic gates like NOT, AND, and OR. Challenge yourself to create complex circuits such as XOR gates and half-adders with minimal track segments. Explore a sandbox mode for freeform track creation.

**Highlights:** Digital circuitry puzzles, Logic gate simulation (NOT, AND, OR, XOR), Half-adder circuit challenges, Sandbox mode for track creation, Minimal track segment challenges

**Features:** macOS Compatibility

**In-app purchases:** none


### ThinkWire

[App page](https://appshunter.io/ios/app/thinkwire/id6757006127)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Level Pack 2 | $0.99 | one-time |


## Frequently asked questions

### Is Flippy the Train free?

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

### Is ThinkWire free?

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

### Do Flippy the Train or ThinkWire have ads?

ThinkWire shows ads; Flippy the Train does not.

### Which is updated more often, Flippy the Train or ThinkWire?

Flippy the Train ships an update every 6 months, and ThinkWire every 4 months. Most recently, Flippy the Train was updated on September 28, 2026 and ThinkWire on October 5, 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.*