# Bubble Level for iPhone vs Compression Therapy System

The clearest difference is in-app purchases: Compression Therapy System at none against Bubble Level for iPhone's 8. Compression Therapy System also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Bubble Level for iPhone sells 8 in-app purchases, starting at $4.99 per 7 days. Compression Therapy System asks for nothing beyond the download.

Bubble Level for iPhone ships an update every 5 weeks, Compression Therapy System every 2 months. The most recent releases landed on September 30, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Bubble Level for iPhone | Compression Therapy System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (112K ratings)](https://appshunter.io/ios/app/bubble-level-for-iphone/id465613917/reviews)** | — |
| Number of ratings | **112K** | — |
| Positive reviews | 34.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 104 MB | 22 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lemondo Apps LLc](https://appshunter.io/developer/1131593451) | [海洋 刘](https://appshunter.io/developer/1736870190) |

## What reviewers say

### Bubble Level for iPhone

[App page](https://appshunter.io/ios/app/bubble-level-for-iphone/id465613917)

This app offers a suite of measurement and detection tools, including a bubble level for alignment, angle measurement, surface flatness checks, and metal detection. It also features an AR ruler for distance measurement and an inclinometer for off-road navigation.

**Highlights:** Bubble level for object alignment, Angle measurement, Surface flatness check, Metal and wire detection, AR ruler for distance measurement, Inclinometer for tilt control, Compass

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $4.99 | per 7 days |
| Weekly free trial | $4.99 | per 7 days |
| Monthly subscriptions | $5.99 | per month |
| Bubble Level Pro | $5.99 | per month |
| 3 month | $7.99 | per 3 months |
| 1 Year no free trial | $19.99 | per year |
| 1 Year | $19.99 | per year |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 🚀 Handy tool
- 👍 Useful features
- 🚀 Accurate readings
- 👍 Reliable for leveling RVs and caravans

**What reviewers complain about**

- 🐛 Inaccurate readings
- 💩 Constant ads disrupting usage
- 🤑 Paywall for full functionality
- 🐛 Ads still present after paid upgrade

**Reported bugs**

- App freezing/crashing
- Ads blocking access to app features
- Inconsistent performance across devices

**Requested features**

- Calibration option
- Improved contrast for outdoor visibility
- Larger font size for readouts
- Plumb line view through camera


### Compression Therapy System

[App page](https://appshunter.io/ios/app/compression-therapy-system/id6763966336)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level for iPhone free?

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

### Is Compression Therapy System free?

Compression Therapy System is free to download, with no in-app purchases.

### Do Bubble Level for iPhone or Compression Therapy System have ads?

Bubble Level for iPhone shows ads; Compression Therapy System does not.

### Which is updated more often, Bubble Level for iPhone or Compression Therapy System?

Bubble Level for iPhone ships an update every 5 weeks, and Compression Therapy System every 2 months. Most recently, Bubble Level for iPhone was updated on September 30, 2026 and Compression Therapy System on September 22, 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.*