Protractor Edge vs 9pos Manager Pre
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protractor Edge
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.
- Precise angle measurement
- Smart instrument
- Digital protractor
- Supports iPhone and iPad
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Protractor - smart instrument to measure angles. Support: https://k1er.github.io/
9pos Manager Pre
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Ứng dụng xem báo cáo Online của phần mềm quản lý bán hàng 9pos
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Protractor Edge | 9pos Manager Pre |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 weeks — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 17 MB | 14 MB |
| Age rating | +4 | 4+ |
| Developer | 向阳 杨 | Nguyen Le Quoc Huy |
In-app purchases
Protractor Edge
- Support for a cup of coffee$1.99
- Ads-free experience$1.99
9pos Manager Pre
No in-app purchases
Questions
Is Protractor Edge free?
Is 9pos Manager Pre free?
Do Protractor Edge or 9pos Manager Pre have ads?
Which is updated more often, Protractor Edge or 9pos Manager Pre?
Other comparisons
