# Diametre vs Ruler & Digital Caliper

The clearest difference is in-app purchases: Diametre at none against Ruler & Digital Caliper's 1. Diametre also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Ruler & Digital Caliper sells 1 one-off in-app purchase. Diametre asks for nothing beyond the download.

## The numbers

| Metric | Diametre | Ruler & Digital Caliper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | Free | — |
| Size | 28 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [franck bertaux](https://appshunter.io/developer/1806891800) | [Yurii Koshkin](https://appshunter.io/developer/1873601061) |

## What reviewers say

### Diametre

[App page](https://appshunter.io/ios/app/diametre/id6747874263)

Easily calculate the diameter of your roller shutter or blind axis without disassembly or measuring tools. This practical utility app provides a simple solution for accurate measurements.

**Highlights:** Calculate roller shutter axis diameter, Calculate blind axis diameter, No disassembly required, No caliper needed, Simple and practical interface

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

**In-app purchases:** none


### Ruler & Digital Caliper

[App page](https://appshunter.io/ios/app/ruler-and-digital-caliper/id6806950163)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is Diametre free?

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

### Is Ruler & Digital Caliper free?

Ruler & Digital Caliper is free to download, with in-app purchases available.

### Do Diametre or Ruler & Digital Caliper have ads?

Neither Diametre nor Ruler & Digital Caliper shows ads.

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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.*