# Bubble Level Tool vs Smart Controller Pro

The clearest difference is review sentiment: Smart Controller Pro at 100% against Bubble Level Tool's 6%. Smart Controller Pro also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 9). Bubble Level Tool's advantage is ratings volume (2.5K vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Bubble Level Tool sells 9 in-app purchases, starting at $3.99 per 7 days. Smart Controller Pro asks for nothing beyond the download.

Smart Controller Pro holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Bubble Level Tool has 2.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 6% of Bubble Level Tool's written reviews are positive against 100% of Smart Controller Pro's.

Bubble Level Tool ships an update weekly, Smart Controller Pro every 4 days. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Bubble Level Tool | Smart Controller Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (2.5K ratings)](https://appshunter.io/ios/app/bubble-level-tool-digital/id1662018802/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-controller-pro/id6768871357/reviews)** |
| Number of ratings | **2.5K** | 1 |
| Positive reviews | 5.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Subscription | **Free** |
| Size | 5 MB | 42 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rihab Mehboob](https://appshunter.io/developer/1441916319) | [QI Automotive Co.,Ltd](https://appshunter.io/developer/1635704762) |

## What reviewers say

### Bubble Level Tool

[App page](https://appshunter.io/ios/app/bubble-level-tool-digital/id1662018802)

Measure precise angles and levels with your device. Easily switch between portrait, landscape, and surface level modes. Lock and reset angles for accurate measurements.

**Highlights:** Measure current device angle, Reset angle, Lock angle, Portrait mode, Landscape mode, Surface level

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble 1 Week | $3.99 | per 7 days |
| Bubble 1 Week | $4.99 | per 7 days |
| Bubble 1 Month | $5.99 | per month |
| Bubble 1 Month | $9.99 | per month |
| Bubble 1 Year | $24.99 | per year |
| Bubble 6 Months | $29.99 | per 6 months |
| Bubble 1 Year | $39.99 | per year |
| Bubble Lifetime | $17.99 | one-time |
| Bubble Lifetime | $69.99 | one-time |

**What reviewers like**

- ⭐️ Useful app
- 🤠 Handy when needed
- 👍 It simply works

**What reviewers complain about**

- 💰 Expensive subscription
- 🚫 Unusable without paying
- 📢 Constant upsell pop-ups
- 🕰️ Limited free trial
- 🤯 Frustrating experience

**Reported bugs**

- Inaccurate level readings
- Compatibility issues with older devices

**Requested features**

- Percentage slope display option
- Ability to switch between degree and percent
- Refund/cancellation options


### Smart Controller Pro

[App page](https://appshunter.io/ios/app/smart-controller-pro/id6768871357)

Control your trailer's braking system wirelessly via Bluetooth. Adjust brake parameters, receive alerts for trailer malfunctions, and detect wiring faults for safe and reliable operation.

**Highlights:** Bluetooth connectivity, Trailer braking control, Adjustable brake parameters, Failure alerts, Wiring fault detection

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level Tool free?

Bubble Level Tool is free to download, with in-app purchases available.

### Is Smart Controller Pro free?

Smart Controller Pro is free to download, with no in-app purchases.

### Which has better reviews, Bubble Level Tool or Smart Controller Pro?

Smart Controller Pro is rated higher. Bubble Level Tool averages 4.4 out of 5 from 2.5K ratings, while Smart Controller Pro averages 5.0 from 1 ratings.

### Do Bubble Level Tool or Smart Controller Pro have ads?

Neither Bubble Level Tool nor Smart Controller Pro shows ads.

### Which is updated more often, Bubble Level Tool or Smart Controller Pro?

Bubble Level Tool ships an update weekly, and Smart Controller Pro every 4 days. Most recently, Bubble Level Tool was updated on October 13, 2026 and Smart Controller Pro on October 9, 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.*