# Protractor Smart vs Lockpass

The clearest difference is in-app purchases: Lockpass at none against Protractor Smart's 1. Protractor Smart's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.4). On price and ads there is nothing between them.

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

## The numbers

| Metric | Protractor Smart | Lockpass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (247 ratings)](https://appshunter.io/ios/app/protractor-smart/id1076530001/reviews)** | — |
| Number of ratings | **247** | — |
| Positive reviews | 43.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 21 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 37 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [Artem Belyaev](https://appshunter.io/developer/6776556324) |

## What reviewers say

### Protractor Smart

[App page](https://appshunter.io/ios/app/protractor-smart/id1076530001)

This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.

**Highlights:** Camera-based angle measurement, Touch measure mode, Plumb bob measure for slopes, Polygon measurement (premium), Screenshot functionality

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdBlock - Remove ads | $1.99 | one-time |

**What reviewers like**

- 👍 Useful for measurements
- 👍 Accurate for its purpose
- 👍 Convenient and handy
- 👍 Good for specific tasks (e.g., knife sharpening, stereo mic angles)
- 👍 No excessive charges

**What reviewers complain about**

- 🐛 App freezes/loads indefinitely
- 🐛 Does not launch after updates
- 🐛 Stuck on loading screen
- 🐛 Inaccurate or unstable measurements
- 🐛 Camera quality issues

**Reported bugs**

- App loads indefinitely
- App does not launch after iOS updates
- Stuck on loading screen
- Photo upload not possible in premium version
- Upside-down protractor on iOS

**Requested features**

- Improve camera function (light, zoom)
- Add automatic hold function
- Increase digital readout size
- Add more skins/cosmetics
- Option to remove ads


### Lockpass

[App page](https://appshunter.io/ios/app/lockpass/id6780388742)

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

**In-app purchases:** none


## Frequently asked questions

### Is Protractor Smart free?

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

### Is Lockpass free?

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

### Do Protractor Smart or Lockpass have ads?

Neither Protractor Smart nor Lockpass 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.*