# Bubble level and Clinometer vs Smart Tools Pro HD

The clearest difference is review sentiment: Bubble level and Clinometer at 94% against Smart Tools Pro HD's 0%. Bubble level and Clinometer also leads on rating (4.1 vs 1.0) and monetization model (free vs paid). On price, update cadence, ads and in-app purchases there is nothing between them.

Bubble level and Clinometer costs $0.99 and Smart Tools Pro HD $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bubble level and Clinometer holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Bubble level and Clinometer has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 94% of Bubble level and Clinometer's written reviews are positive against 0% of Smart Tools Pro HD's.

Bubble level and Clinometer ships an update every 7 months, Smart Tools Pro HD every 9 months. The most recent releases landed on September 26, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Bubble level and Clinometer | Smart Tools Pro HD |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.1 (9 ratings)](https://appshunter.io/ios/app/bubble-level-and-clinometer/id304152770/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/smart-tools-pro-hd/id764668765/reviews) |
| Number of ratings | **9** | 1 |
| Positive reviews | **94.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | **Free** | Paid |
| Size | 13 MB | 11 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peter Breitling](https://appshunter.io/developer/286215120) | [Shajir Kalady](https://appshunter.io/developer/1673992247) |

## What reviewers say

### Bubble level and Clinometer

[App page](https://appshunter.io/ios/app/bubble-level-and-clinometer/id304152770)

This app provides precise slope and angle measurements using your device's sensors. It offers multiple units, adjustable lock sensitivity, and a peer mode for measuring angles between two devices. Customize the display with different color schemes and prevent sleep mode with adjustable auto-lock.

**Highlights:** Multiple unit modes (degrees, percentage, rise/run), Adjustable dial rotation, Motion-sensitive lock feature, Volume button lock, Peer mode for two-device measurements, Fullscreen mode, Customizable color schemes

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

**In-app purchases:** none


### Smart Tools Pro HD

[App page](https://appshunter.io/ios/app/smart-tools-pro-hd/id764668765)

This app transforms your iPad into a comprehensive toolkit with over 30 measurement and utility functions. It offers tools like rulers, protractors, speedometers, flashlights, and QR code scanners, catering to various professional and personal needs.

**Highlights:** Ruler and protractor for precise measurements, AR-based distance and height measurement, Real-time speedometer with HUD mode, Flashlight with adjustable brightness, Digital compass with GPS integration, QR code scanner and generator, Spirit level with surface and edge modes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble level and Clinometer free?

Bubble level and Clinometer costs $0.99, with no in-app purchases.

### Is Smart Tools Pro HD free?

Smart Tools Pro HD costs $0.99, with no in-app purchases.

### Which has better reviews, Bubble level and Clinometer or Smart Tools Pro HD?

Bubble level and Clinometer is rated higher. Bubble level and Clinometer averages 4.1 out of 5 from 9 ratings, while Smart Tools Pro HD averages 1.0 from 1 ratings.

### Do Bubble level and Clinometer or Smart Tools Pro HD have ads?

Neither Bubble level and Clinometer nor Smart Tools Pro HD shows ads.

### Which is updated more often, Bubble level and Clinometer or Smart Tools Pro HD?

Bubble level and Clinometer ships an update every 7 months, and Smart Tools Pro HD every 9 months. Most recently, Bubble level and Clinometer was updated on September 26, 2026 and Smart Tools Pro HD on June 3, 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.*