# BPC 311 vs Olypsys Measure

The clearest difference is in-app purchases: BPC 311 at none against Olypsys Measure's 3. BPC 311 also leads on iOS requirement (12.0 vs 16.4). Olypsys Measure's advantage is ads (none vs shown) and update cadence (every 4 weeks vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Olypsys Measure sells 3 in-app purchases, starting at $10.00 per month. BPC 311 asks for nothing beyond the download.

BPC 311 ships an update every 9 months, Olypsys Measure every 4 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BPC 311 | Olypsys Measure |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 4 weeks** |
| Monetization | — | Freemium |
| Size | 28 MB | 101 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Breezy Point Cooperative, Inc.](https://appshunter.io/developer/1418781947) | [Olypsys Technologies Ltd](https://appshunter.io/developer/1583943946) |

## What reviewers say

### BPC 311

[App page](https://appshunter.io/ios/app/bpc-311/id1071928938)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is BPC 311 free?

BPC 311 is free to download, with no in-app purchases.

### Is Olypsys Measure free?

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

### Do BPC 311 or Olypsys Measure have ads?

BPC 311 shows ads; Olypsys Measure does not.

### Which is updated more often, BPC 311 or Olypsys Measure?

BPC 311 ships an update every 9 months, and Olypsys Measure every 4 weeks. Most recently, BPC 311 was updated on November 2, 2026 and Olypsys Measure on November 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.*