# Olypsys Measure vs Structr

The clearest difference is update cadence: Structr at weekly against Olypsys Measure's every 4 weeks. Structr also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Olypsys Measure sells 3 in-app purchases, starting at $10.00 per month and Structr sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Olypsys Measure ships an update every 4 weeks, Structr weekly. The most recent releases landed on November 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Olypsys Measure | Structr |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 101 MB | 47 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Olypsys Technologies Ltd](https://appshunter.io/developer/1583943946) | [Nic Van Kampen](https://appshunter.io/developer/1893471346) |

## What reviewers say

### Olypsys Measure

[App page](https://appshunter.io/ios/app/olypsys-measure/id1583943944)

This app uses your phone's camera to measure and identify various sealing components like O-rings and gaskets. Simply photograph the part on a calibration grid to get dimensions and find matching catalogue parts.

**Highlights:** Measure O-rings, gaskets, circlips, washers, Identify catalogue parts that fit, Supports multiple international standards, CAD export for Pro users, Corrects for shadows, tilt, and distortion, Save measurements with project details

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Olypsys Pro Monthly | $10.00 | per month |
| Pro (yearly) | $80.00 | per year |
| Olypsys Enterprise Yearly | $600.00 | per year |


### Structr

[App page](https://appshunter.io/ios/app/structr-project-tracking/id6762510293)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Structr PRO Monthly | $6.99 | per month |
| Structr PRO Annual | $69.99 | per year |


## Frequently asked questions

### Is Olypsys Measure free?

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

### Is Structr free?

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

### Do Olypsys Measure or Structr have ads?

Neither Olypsys Measure nor Structr shows ads.

### Which is updated more often, Olypsys Measure or Structr?

Olypsys Measure ships an update every 4 weeks, and Structr weekly. Most recently, Olypsys Measure was updated on November 3, 2026 and Structr on October 15, 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.*