# Olypsys Measure vs DragCalc

The clearest difference is review sentiment: Olypsys Measure at 67% against DragCalc's 0%. Olypsys Measure also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 5 months). DragCalc's advantage is in-app purchases (none vs 3). 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. DragCalc asks for nothing beyond the download.

Olypsys Measure ships an update every 4 weeks, DragCalc every 5 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Olypsys Measure | DragCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/dragcalc/id6758584657/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 5 months |
| Monetization | Freemium | **Ad-supported** |
| Size | 101 MB | 17 MB |
| Requires iOS | **16.4** | 18.1 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Olypsys Technologies Ltd](https://appshunter.io/developer/1583943946) | [Sheharyar Irfan](https://appshunter.io/developer/974971911) |

## 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 |


### DragCalc

[App page](https://appshunter.io/ios/app/dragcalc/id6758584657)

This app predicts drag racing performance metrics like quarter-mile times and trap speeds using a physics-based simulation. It allows users to input car specifications, compare different builds, and analyze real-world runs.

**Highlights:** AI-powered car input, Quarter & Eighth Mile ET/trap speed predictions, Side-by-side car build comparison, Slope correction for track grade, Analysis of imported run data, Cloud sync for presets

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Olypsys Measure free?

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

### Is DragCalc free?

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

### Do Olypsys Measure or DragCalc have ads?

DragCalc shows ads; Olypsys Measure does not.

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

Olypsys Measure ships an update every 4 weeks, and DragCalc every 5 months. Most recently, Olypsys Measure was updated on November 3, 2026 and DragCalc on October 31, 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.*