# I vs Bubble Level Tool

The clearest difference is in-app purchases: I at none against Bubble Level Tool's 2. I also leads on ads (none vs shown) and update cadence (every 2 months vs every 9 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Bubble Level Tool sells 2 in-app purchases, starting at $4.99 per month. I asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for I against 5.0 for Bubble Level Tool. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

I ships an update every 2 months, Bubble Level Tool every 9 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | I | Bubble Level Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/i-roller/id6739863223/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/bubble-level-tool-level/id6743683226/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 74 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [MINH GIANG MANUFACTURING & TRADING CO.,LTD](https://appshunter.io/developer/1787348828) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### I

[App page](https://appshunter.io/ios/app/i-roller/id6739863223)

This mobile application functions as a remote control transmitter, connecting via Bluetooth to provide unlocking and locking capabilities for your device. Experience seamless control and enhanced functionality.

**Highlights:** Bluetooth connectivity, Remote control transmitter, Unlocking functions, Locking functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Bubble Level Tool

[App page](https://appshunter.io/ios/app/bubble-level-tool-level/id6743683226)

Measure horizontal and vertical levels with your smartphone. This tool uses intuitive animations to show when a surface is perfectly level, featuring a calibration function for precise results. Ideal for DIY, construction, and furniture installation.

**Highlights:** Measure horizontal and vertical levels, Intuitive animation indicators, Calibration function for precision, Suitable for DIY projects, Useful for construction, Furniture installation aid

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


## Frequently asked questions

### Is I free?

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

### Is Bubble Level Tool free?

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

### Which has better reviews, I or Bubble Level Tool?

I and Bubble Level Tool are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do I or Bubble Level Tool have ads?

Bubble Level Tool shows ads; I does not.

### Which is updated more often, I or Bubble Level Tool?

I ships an update every 2 months, and Bubble Level Tool every 9 months. Most recently, I was updated on October 28, 2026 and Bubble Level Tool on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*