# Ruler Box vs PartSets

The clearest difference is review sentiment: Ruler Box at 45% against PartSets's 0%. Ruler Box also leads on rating (4.3 vs 2.0) and in-app purchases (none vs 5). PartSets's advantage is price (Free vs $0.99). On update cadence, ads and device support there is nothing between them.

PartSets is free to download; Ruler Box costs $0.99 up front. PartSets sells 5 one-off in-app purchases. Ruler Box asks for nothing beyond the download.

Ruler Box holds the better App Store score, 4.3 against 2.0. That said, the two scores are not equally well evidenced: Ruler Box has 94 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 45% of Ruler Box's written reviews are positive against 0% of PartSets's.

Ruler Box ships an update every 7 months, PartSets every 5 months. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Ruler Box | PartSets |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.3 (94 ratings)](https://appshunter.io/ios/app/ruler-box-measure-tools/id550123808/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/partsets/id6612022770/reviews) |
| Number of ratings | **94** | 1 |
| Positive reviews | **45.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 9 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [志荣 杨](https://appshunter.io/developer/478654885) | [宗林 郭](https://appshunter.io/developer/1752221005) |

## What reviewers say

### Ruler Box

[App page](https://appshunter.io/ios/app/ruler-box-measure-tools/id550123808)

Learn to effectively use various types of rulers with practical examples and user cases. This app introduces over ten different rulers, with more measurement tools planned for future updates.

**Highlights:** Learn ruler usage, Practical user cases, Over ten rulers included, Caliper measurement tools, Upcoming ruler types

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

**In-app purchases:** none


### PartSets

[App page](https://appshunter.io/ios/app/partsets/id6612022770)

Easily manage your parts or items with this app. Add unlimited items, categorize them, track quantities, and even store associated PDF files. Enjoy secure data management with iCloud synchronization across multiple Apple devices.

**Highlights:** Unlimited parts management, Categorization and quantity tracking, iCloud synchronization, Multi-device operation, PDF resource saving, Secure data storage

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Features(Trial 1week) | Free | one-time |
| Advanced Features(A week) | $0.29 | one-time |
| Advanced Features(A Month) | $0.49 | one-time |
| Advanced Features(A year) | $4.99 | one-time |
| Advanced Feature(Forever) | $11.49 | one-time |


## Frequently asked questions

### Is Ruler Box free?

Ruler Box costs $0.99, with no in-app purchases.

### Is PartSets free?

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

### Which has better reviews, Ruler Box or PartSets?

Ruler Box is rated higher. Ruler Box averages 4.3 out of 5 from 94 ratings, while PartSets averages 2.0 from 1 ratings.

### Do Ruler Box or PartSets have ads?

Neither Ruler Box nor PartSets shows ads.

### Which is updated more often, Ruler Box or PartSets?

Ruler Box ships an update every 7 months, and PartSets every 5 months. Most recently, Ruler Box was updated on October 14, 2026 and PartSets on October 3, 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.*