# Brain Playground vs Trace

The clearest difference is ads: Brain Playground at none against Trace's shown. Trace's advantage is update cadence (every 4 days vs every 9 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Brain Playground sells 10 one-off in-app purchases and Trace sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Brain Playground ships an update every 9 days, Trace every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Brain Playground | Trace |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 45 MB | 129 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jihoon Bang](https://appshunter.io/developer/6776155905) | [Hajin Cho](https://appshunter.io/developer/6796362854) |

## What reviewers say

### Brain Playground

[App page](https://appshunter.io/ios/app/brain-playground/id6776155903)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| full charge | $0.99 | one-time |
| energy expansion | $1.99 | one-time |
| 1,000 Neurons | $1.99 | one-time |
| 50,000 Coin | $1.99 | one-time |
| 100,000 Coin | $2.99 | one-time |
| 5000 Neurons | $3.99 | one-time |
| 10,000 Neurons | $5.99 | one-time |
| 200,000 Coin | $5.99 | one-time |
| VIP | $6.99 | one-time |
| 500,000 Coin | $17.99 | one-time |


### Trace

[App page](https://appshunter.io/ios/app/trace-one-line-puzzle/id6796362852)

Connect every square on the board with a single, unbroken line. This minimalist puzzle game offers a simple yet challenging experience that tests your strategic thinking. Compete globally for the best times and enjoy quick, satisfying gameplay.

**Highlights:** Connect all squares with one line, Minimalist puzzle design, Increasing difficulty and strategy, Global leaderboards, Play anytime, anywhere, Hint system available

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| hint_erase_Bundle | $0.99 | one-time |
| REMOVE_ADS | $4.99 | one-time |


## Frequently asked questions

### Is Brain Playground free?

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

### Is Trace free?

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

### Do Brain Playground or Trace have ads?

Trace shows ads; Brain Playground does not.

### Which is updated more often, Brain Playground or Trace?

Brain Playground ships an update every 9 days, and Trace every 4 days. Most recently, Brain Playground was updated on October 25, 2026 and Trace 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.*