# One Line Shift vs TRACE

The clearest difference is in-app purchases: TRACE at none against One Line Shift's 1. TRACE also leads on update cadence (daily vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. One Line Shift sells 1 one-off in-app purchase. TRACE asks for nothing beyond the download.

One Line Shift ships an update every 10 days, TRACE daily. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | One Line Shift | TRACE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Size | 1 MB | 39 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [HOUJUN CO., LTD.](https://appshunter.io/developer/1854048927) | [LACHEZAR VENTSISLAVOV GADZHEV](https://appshunter.io/developer/6800415387) |

## What reviewers say

### One Line Shift

[App page](https://appshunter.io/ios/app/one-line-shift/id6800379685)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $6.99 | one-time |


### TRACE

[App page](https://appshunter.io/ios/app/trace-one-line-puzzle/id6805392232)

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

**In-app purchases:** none


## Frequently asked questions

### Is One Line Shift free?

One Line Shift is free to download, with in-app purchases available.

### Is TRACE free?

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

### Do One Line Shift or TRACE have ads?

Neither One Line Shift nor TRACE shows ads.

### Which is updated more often, One Line Shift or TRACE?

One Line Shift ships an update every 10 days, and TRACE daily. Most recently, One Line Shift was updated on October 24, 2026 and TRACE on October 22, 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.*