# SDC BSO vs Protractor Measuring Angle

The clearest difference is update cadence: Protractor Measuring Angle at every 2 days against SDC BSO's every 6 weeks. SDC BSO's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SDC BSO ships an update every 6 weeks, Protractor Measuring Angle every 2 days. The most recent releases landed on September 20, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SDC BSO | Protractor Measuring Angle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/protractor-measuring-angle/id6785106013/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Free | Free |
| Size | 49 MB | 16 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tzu An Wen](https://appshunter.io/developer/1196209054) | [MSR TECH LLP](https://appshunter.io/developer/1761560109) |

## What reviewers say

### SDC BSO

[App page](https://appshunter.io/ios/app/sdc-bso/id1498155196)

This utility app provides a dedicated pitch clock function for fieldforce operations. It was updated to include this specific feature, enhancing its functionality for users requiring precise timing.

**Highlights:** Pitch clock function, Fieldforce operations support, Updated functionality, Precise timing

**Features:** macOS Compatibility

**In-app purchases:** none


### Protractor Measuring Angle

[App page](https://appshunter.io/ios/app/protractor-measuring-angle/id6785106013)

This app transforms your iPhone into a versatile digital measuring tool. It offers multiple functions to measure angles, slopes, distances, and even height using your device's sensors and camera. Save and review your measurement history for future reference.

**Highlights:** Inclinometer for real-time tilt measurement, Screen protractor for precise angle reading, Camera level with horizon overlay, Photo angle measurement on existing images, Height calculator using trigonometry, AR Measure for 3D space measurements, On-screen ruler and digital compass

**In-app purchases:** none


## Frequently asked questions

### Is SDC BSO free?

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

### Is Protractor Measuring Angle free?

Protractor Measuring Angle is free to download, with no in-app purchases.

### Do SDC BSO or Protractor Measuring Angle have ads?

Neither SDC BSO nor Protractor Measuring Angle shows ads.

### Which is updated more often, SDC BSO or Protractor Measuring Angle?

SDC BSO ships an update every 6 weeks, and Protractor Measuring Angle every 2 days. Most recently, SDC BSO was updated on September 20, 2026 and Protractor Measuring Angle on October 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.*