# Protractor Angle Measure App vs EchoRecorder

The clearest difference is review sentiment: EchoRecorder at 100% against Protractor Angle Measure App's 33%. EchoRecorder also leads on in-app purchases (none vs 3) and update cadence (daily vs every 4 months). Protractor Angle Measure App's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.6). On price, ads and monetization model there is nothing between them.

Both are free to download. Protractor Angle Measure App sells 3 in-app purchases, starting at $3.99 per month. EchoRecorder asks for nothing beyond the download.

Protractor Angle Measure App ships an update every 4 months, EchoRecorder daily. The most recent releases landed on October 28, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Protractor Angle Measure App | EchoRecorder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (4 ratings)](https://appshunter.io/ios/app/protractor-angle-measure-app/id6755661639/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ebenezer Oteng](https://appshunter.io/developer/1840002550) | [HUJIN SHIN](https://appshunter.io/developer/1516817833) |

## What reviewers say

### Protractor Angle Measure App

[App page](https://appshunter.io/ios/app/protractor-angle-measure-app/id6755661639)

This tool allows for instant and accurate angle measurements using a digital protractor, camera overlay, and ruler. It supports 180° and 360° measurements, ideal for students, engineers, builders, and DIYers for various projects.

**Highlights:** Accurate digital protractor, 180° & 360° measurement, Camera overlay for real-time angles, Ruler mode for line measurement, Angle lock and precision control, Simple, distraction-free interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Premium Yearly | $39.99 | per year |
| Lifetime access | $9.99 | one-time |


### EchoRecorder

[App page](https://appshunter.io/ios/app/echorecorder-voice-recorder/id6806891469)

This utility app allows for instant voice recording and playback. It's designed for quick reviews and saving audio for practice, rehearsals, or capturing ideas. Features include quick recording, locked recording, and automatic playback.

**Highlights:** Instant recording, Automatic playback, Slide-up lock recording, Dark Mode support, Quick audio review

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

**In-app purchases:** none


## Frequently asked questions

### Is Protractor Angle Measure App free?

Protractor Angle Measure App is free to download, with in-app purchases available.

### Is EchoRecorder free?

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

### Do Protractor Angle Measure App or EchoRecorder have ads?

Both Protractor Angle Measure App and EchoRecorder show ads.

### Which is updated more often, Protractor Angle Measure App or EchoRecorder?

Protractor Angle Measure App ships an update every 4 months, and EchoRecorder daily. Most recently, Protractor Angle Measure App was updated on October 28, 2026 and EchoRecorder on October 11, 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.*