# Protractor Edge vs 9pos Manager Pre

The clearest difference is in-app purchases: 9pos Manager Pre at none against Protractor Edge's 2. 9pos Manager Pre also leads on ads (none vs shown). Protractor Edge's advantage is update cadence (every 6 weeks vs every 8 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Protractor Edge sells 2 one-off in-app purchases. 9pos Manager Pre asks for nothing beyond the download.

Protractor Edge ships an update every 6 weeks, 9pos Manager Pre every 8 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Protractor Edge | 9pos Manager Pre |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/protractor-edge-angle-measure/id1499078532/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 8 months |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 14 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [向阳 杨](https://appshunter.io/developer/1174757734) | [Nguyen Le Quoc Huy](https://appshunter.io/developer/1572470738) |

## What reviewers say

### Protractor Edge

[App page](https://appshunter.io/ios/app/protractor-edge-angle-measure/id1499078532)

This utility app functions as a precise digital protractor for measuring angles on your device. It offers a smart instrument for accurate angle measurement, supporting iPhone and iPad. The app is free to download and use.

**Highlights:** Precise angle measurement, Smart instrument, Digital protractor, Supports iPhone and iPad

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support for a cup of coffee | $1.99 | one-time |
| Ads-free experience | $1.99 | one-time |


### 9pos Manager Pre

[App page](https://appshunter.io/ios/app/9pos-manager-pre/id6520394261)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Protractor Edge free?

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

### Is 9pos Manager Pre free?

9pos Manager Pre is free to download, with no in-app purchases.

### Do Protractor Edge or 9pos Manager Pre have ads?

Protractor Edge shows ads; 9pos Manager Pre does not.

### Which is updated more often, Protractor Edge or 9pos Manager Pre?

Protractor Edge ships an update every 6 weeks, and 9pos Manager Pre every 8 months. Most recently, Protractor Edge was updated on October 7, 2026 and 9pos Manager Pre on October 5, 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.*