# Seien vs Protractor Angle Meter

The clearest difference is in-app purchases: Seien at none against Protractor Angle Meter's 1. Seien also leads on iOS requirement (13.2 vs 17.6). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Protractor Angle Meter sells 1 one-off in-app purchase. Seien asks for nothing beyond the download.

## The numbers

| Metric | Seien | Protractor Angle Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protractor-angle-meter/id6778436306/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 56 MB |
| Requires iOS | **13.2** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NIPPON INFORMATION CO.,LTD.](https://appshunter.io/developer/396358322) | [Romiick LLC](https://appshunter.io/developer/1716146475) |

## What reviewers say

### Seien

[App page](https://appshunter.io/ios/app/seien/id1530876233)

Record and play back your voice or sounds with simple button presses. This utility app allows you to register custom audio to buttons for easy playback anytime, anywhere. Express yourself and spread cheer with your recorded sounds.

**Highlights:** Easy voice recording, Register sounds to buttons, Instant playback, Record multiple sounds, Express feelings through voice

**Features:** Vision Pro support

**In-app purchases:** none


### Protractor Angle Meter

[App page](https://appshunter.io/ios/app/protractor-angle-meter/id6778436306)

This app allows you to measure angles from photos using your device's camera or existing images. Add multiple measurements with customizable colors and labels, and view results in various units. Save your work automatically and export high-quality images of your measurements.

**Highlights:** Measure angles from photos, Live camera or photo library input, Multiple angle measurements per photo, Customizable color and labels, Degrees, radians, or slope percentage output, Precision Loupe for accuracy, Automatic saving

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pass | $9.99 | one-time |


## Frequently asked questions

### Is Seien free?

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

### Is Protractor Angle Meter free?

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

### Do Seien or Protractor Angle Meter have ads?

Neither Seien nor Protractor Angle Meter shows ads.

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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.*