# One Line Complete vs Euler's Circuit

The clearest difference is in-app purchases: One Line Complete at none against Euler's Circuit's 1. One Line Complete also leads on update cadence (every 5 days vs every 10 days) and iOS requirement (16 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Euler's Circuit sells 1 one-off in-app purchase. One Line Complete asks for nothing beyond the download.

One Line Complete ships an update every 5 days, Euler's Circuit every 10 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | One Line Complete | Euler's Circuit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 10 days |
| Size | 12 MB | 11 MB |
| Requires iOS | **16** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [燕梅 高](https://appshunter.io/developer/1860144880) | [Kenichi Horiuchi](https://appshunter.io/developer/1553401480) |

## What reviewers say

### One Line Complete

[App page](https://appshunter.io/ios/app/one-line-complete-one-stroke/id6766940964)

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

**In-app purchases:** none


### Euler's Circuit

[App page](https://appshunter.io/ios/app/eulers-circuit-one-line/id6792647040)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | one-time |


## Frequently asked questions

### Is One Line Complete free?

One Line Complete is free to download, with no in-app purchases.

### Is Euler's Circuit free?

Euler's Circuit is free to download, with in-app purchases available.

### Do One Line Complete or Euler's Circuit have ads?

Both One Line Complete and Euler's Circuit show ads.

### Which is updated more often, One Line Complete or Euler's Circuit?

One Line Complete ships an update every 5 days, and Euler's Circuit every 10 days. Most recently, One Line Complete was updated on October 25, 2026 and Euler's Circuit on October 29, 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.*