# One vs Chains

The clearest difference is in-app purchases: Chains at none against One's 1. Chains also leads on update cadence (every 2 weeks vs every 26 months) and rating (5.0 vs 4.7). One's advantage is ratings volume (401 vs 1) and iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

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

Chains holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: One has 401 ratings behind it against 1, so its average is the more settled of the two.

One ships an update every 26 months, Chains every 2 weeks. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | One | Chains |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (401 ratings)](https://appshunter.io/ios/app/one-touch-draw/id1474978637/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chains-line-puzzle/id6785922637/reviews)** |
| Number of ratings | **401** | 1 |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 26 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 14 MB | 107 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 12+ |
| Developer | [Alejandro Castagnolo Martinez](https://appshunter.io/developer/1448413093) | [Katsiaryna Petruchenya](https://appshunter.io/developer/6771518350) |

## What reviewers say

### One

[App page](https://appshunter.io/ios/app/one-touch-draw/id1474978637)

Challenge your mind with a unique drawing puzzle. Connect all points with a single, unbroken line. Improve your logic and visual reasoning skills across 150 engaging levels.

**Highlights:** Draw with a single line, 150 challenging levels, Improve logic skills, Enhance reasoning, Visual agility training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads removal | $1.99 | one-time |


### Chains

[App page](https://appshunter.io/ios/app/chains-line-puzzle/id6785922637)

Connect spools to create a continuous chain and solve logic puzzles in a steampunk-themed world. Earn rewards for perfect solutions and utilize smart hints to guide your progress without revealing the answer. Enjoy a pressure-free experience with evolving challenges.

**Highlights:** One-line chain logic puzzles, Steampunk visual theme, Smart hint system, Earn up to 3 brass spools per level, 216 levels across 9 packs, Light and dark themes, No timers or lives

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One free?

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

### Is Chains free?

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

### Which has better reviews, One or Chains?

Chains is rated higher. One averages 4.7 out of 5 from 401 ratings, while Chains averages 5.0 from 1 ratings.

### Do One or Chains have ads?

Both One and Chains show ads.

### Which is updated more often, One or Chains?

One ships an update every 26 months, and Chains every 2 weeks. Most recently, One was updated on September 28, 2026 and Chains on September 17, 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.*