# ShapeInfo Plus vs Bolt Length

The clearest difference is price: Bolt Length at Free against ShapeInfo Plus's $0.99. ShapeInfo Plus's advantage is rating (4.6 vs 3.0) and in-app purchases (none vs 1). On device support and iOS requirement there is nothing between them.

Bolt Length is free to download; ShapeInfo Plus costs $0.99 up front. Bolt Length sells 1 one-off in-app purchase. ShapeInfo Plus asks for nothing beyond the download.

ShapeInfo Plus holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: ShapeInfo Plus has 31 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of ShapeInfo Plus's written reviews are positive against 33% of Bolt Length's.

ShapeInfo Plus ships an update every 6 months, Bolt Length every 20 months. The most recent releases landed on September 23, 2026 and August 2, 2026 respectively.

## The numbers

| Metric | ShapeInfo Plus | Bolt Length |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.6 (31 ratings)](https://appshunter.io/ios/app/shapeinfo-plus/id983851989/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/bolt-length-nominal-length/id1042345193/reviews) |
| Number of ratings | **31** | 2 |
| Positive reviews | **67.9% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 months** | Every 20 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 6 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noriyasu Kutsuzawa](https://appshunter.io/developer/668500806) | [mitsunori oishi](https://appshunter.io/developer/905649994) |

## What reviewers say

### ShapeInfo Plus

[App page](https://appshunter.io/ios/app/shapeinfo-plus/id983851989)

This app calculates lengths, angles, and areas for various geometric shapes. It supports a wide range of 2D and 3D shapes, making it a handy tool for engineers and students.

**Highlights:** Calculate lengths, angles, and area, Calculate volume for 3D shapes, Supports various 2D and 3D shapes, User-friendly input for calculations, Immediate calculation results

**Features:** Vision Pro support

**In-app purchases:** none


### Bolt Length

[App page](https://appshunter.io/ios/app/bolt-length-nominal-length/id1042345193)

This application helps calculate the length of metric coarse screws based on Japanese Industrial Standards. It is designed for mechanical design purposes and should be used at the user's own risk.

**Highlights:** Metric coarse screw length calculation, Conforms to Japanese Industrial Standards (JIS), Designed for mechanical design, User risk disclaimer

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

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


## Frequently asked questions

### Is ShapeInfo Plus free?

ShapeInfo Plus costs $0.99, with no in-app purchases.

### Is Bolt Length free?

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

### Which has better reviews, ShapeInfo Plus or Bolt Length?

ShapeInfo Plus is rated higher. ShapeInfo Plus averages 4.6 out of 5 from 31 ratings, while Bolt Length averages 3.0 from 2 ratings.

### Do ShapeInfo Plus or Bolt Length have ads?

Bolt Length shows ads; ShapeInfo Plus does not.

### Which is updated more often, ShapeInfo Plus or Bolt Length?

ShapeInfo Plus ships an update every 6 months, and Bolt Length every 20 months. Most recently, ShapeInfo Plus was updated on September 23, 2026 and Bolt Length on August 2, 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.*