# uCareBaby vs Protractor Edge

The clearest difference is in-app purchases: uCareBaby at none against Protractor Edge's 2. uCareBaby also leads on ads (none vs shown) and iOS requirement (9.0 vs 13.0). On price, update cadence and device support there is nothing between them.

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

uCareBaby ships an update monthly, Protractor Edge every 6 weeks. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | uCareBaby | Protractor Edge |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 17 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [TRANWO TECHNOLOGY CORP.](https://appshunter.io/developer/595251459) | [向阳 杨](https://appshunter.io/developer/1174757734) |

## What reviewers say

### uCareBaby

[App page](https://appshunter.io/ios/app/ucarebaby/id1447840964)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is uCareBaby free?

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

### Is Protractor Edge free?

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

### Do uCareBaby or Protractor Edge have ads?

Protractor Edge shows ads; uCareBaby does not.

### Which is updated more often, uCareBaby or Protractor Edge?

uCareBaby ships an update monthly, and Protractor Edge every 6 weeks. Most recently, uCareBaby was updated on October 26, 2026 and Protractor Edge on October 7, 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.*