# Strobr Scope — Camera Stroboscope

> Camera-based stroboscope for measuring cycle frequencies. (iPhone/iPad app by Alexander Zhang.)

- Source: https://appshunter.io/ios/app/strobr-scope/id1330331187 (this page in markdown: same URL + `.md`)
- Developer: [Alexander Zhang](https://appshunter.io/developer/1418087801)
- Category: Utilities
- Price: Free
- Rating: 3.70/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 10.0 · 14 MB
- Languages: American English
- Released: 2018-01-16
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/strobr-scope/id1330331187/reviews.md

## What is Strobr Scope?

Strobr Scope is a camera-based stroboscope app that relies on continuously variable frame rates to measure the frequencies of cycles. A traditional stroboscope flashes bright lights at a specific frequency that can be easily matched to the rotational frequency of i.e. a car wheel using persistence of vision (POV), allowing the rotational speed to be measured. Strobr Scope works similarly, but can also measure many things like electrical light frequencies and very low slow rotations that a traditional stroboscope cannot. It’s also more convenient and much less distracting to others! This app was built at PennApps 2017 and won top 30 there.

## Key features

- Camera-based stroboscope
- Measures rotational frequencies
- Measures electrical light frequencies
- Measures slow rotations
- Continuously variable frame rates
- Convenient and less distracting


## Frequently asked questions about Strobr Scope

### What can Strobr Scope measure?

Strobr Scope can measure the frequencies of cycles, including rotational speeds of objects and electrical light frequencies. It is also capable of measuring very slow rotations that traditional stroboscopes might miss.

### How does Strobr Scope compare to a traditional stroboscope?

Unlike traditional stroboscopes that use flashing lights, Strobr Scope utilizes your device's camera and continuously variable frame rates. This makes it more convenient, less distracting, and able to measure a wider range of frequencies, including slower ones.

### Is Strobr Scope available on Android?

Based on the provided data, Strobr Scope is available for iPhone, iPad, and iPod devices. Information regarding Android compatibility is not available.

### What is the age rating for Strobr Scope?

Strobr Scope has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content.

### How often is Strobr Scope updated?

The latest version of Strobr Scope is 1.1, which was last updated on January 5, 2019. This suggests updates may not be very frequent.

### Does Strobr Scope have ads?

No, Strobr Scope does not contain advertisements. The app is free to download and use without any ad interruptions.

### What is the user sentiment for Strobr Scope?

Strobr Scope has a rating of 3.7 stars from 3 ratings. While this indicates a generally positive reception, the small number of ratings means user sentiment is not extensively documented.

### When was Strobr Scope first released?

Strobr Scope was first released on January 16, 2018. It was developed by Alexander Zhang and won top 30 at PennApps 2017.

## Version history (last 2 releases)

### 1.1 — 2019-01-05

- Stability improvements
- Compatibility with more devices

### 1.0 — 2018-01-15

No release notes.

## Apps similar to Strobr Scope

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Watch Sensor Logger](https://appshunter.io/ios/app/watch-sensor-logger/id1634449655) | 3.0 (1) | Free | Utilities |
| [Sonic Tools SVM](https://appshunter.io/ios/app/sonic-tools-svm/id1245046029) | 4.7 (6,672) | Free | Utilities |
| [NFC Tap](https://appshunter.io/ios/app/nfc-tap/id1278913597) | 4.2 (219) | Free | Utilities |
| [R&S Throughput 2](https://appshunter.io/ios/app/r-and-s-throughput-2/id1581717433) | 5.0 (1) | Free | Utilities |
| [Whirlometer](https://appshunter.io/ios/app/whirlometer/id1478518608) | 4.8 (95) | Free | Utilities |
| [SmartScopeCam](https://appshunter.io/ios/app/smartscopecam/id1583913650) | — | Free | Utilities |

## More apps by Alexander Zhang

- [AR Orbitals](https://appshunter.io/ios/app/ar-orbitals/id1299537037)
- [Get Ping](https://appshunter.io/ios/app/get-ping/id1457503873)
- [Hand Count](https://appshunter.io/ios/app/hand-count/id1476460427)
- [Material Box](https://appshunter.io/ios/app/material-box/id1532651414)

All apps by Alexander Zhang: https://appshunter.io/developer/1418087801

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*