# Protractor Angle Measure Tool vs Smart Protractor

Protractor Angle Measure Tool and Smart Protractor are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Protractor Angle Measure Tool sells 3 in-app purchases, starting at $4.99 per 7 days and Smart Protractor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Protractor Angle Measure Tool ships an update monthly, Smart Protractor every 2 weeks. The most recent releases landed on September 29, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Protractor Angle Measure Tool | Smart Protractor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (169 ratings)](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087/reviews)** | — |
| Number of ratings | **169** | — |
| Positive reviews | 13.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 79 MB | 8 MB |
| Requires iOS | **16.0** | 17.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Appcellent](https://appshunter.io/developer/1870956141) | [Jun Yamabe](https://appshunter.io/developer/1732682049) |

## What reviewers say

### Protractor Angle Measure Tool

[App page](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087)

This tool transforms your device into a precise angle measurement instrument. It's ideal for DIY projects, construction, and renovations, offering real-time readings in various formats. Get professional-grade accuracy for all your angled surface needs.

**Highlights:** Precise angle measurement, Vertical and horizontal orientations, Multiple measurement units (degrees, radians, gradians), Target angle alerts with audio/vibration, Real-time precision readings, Apple Watch support with haptic feedback

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protractor Weekly | $4.99 | per 7 days |
| Protractor Weekly with Trial | $6.99 | per 7 days |
| Protractor Annual | $39.99 | per year |


### Smart Protractor

[App page](https://appshunter.io/ios/app/smart-protractor/id6746047543)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Protractor Angle Measure Tool free?

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

### Is Smart Protractor free?

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

### Do Protractor Angle Measure Tool or Smart Protractor have ads?

Neither Protractor Angle Measure Tool nor Smart Protractor shows ads.

### Which is updated more often, Protractor Angle Measure Tool or Smart Protractor?

Protractor Angle Measure Tool ships an update monthly, and Smart Protractor every 2 weeks. Most recently, Protractor Angle Measure Tool was updated on September 29, 2026 and Smart Protractor on September 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.*