# AudioMoth vs Bubble Level

The clearest difference is review sentiment: AudioMoth at 100% against Bubble Level's 41%. AudioMoth also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 11). Bubble Level's advantage is update cadence (weekly vs every 11 months) and ratings volume (702 vs 3). On price and device support there is nothing between them.

Both are free to download. Bubble Level sells 11 in-app purchases, starting at $1.99 per 7 days. AudioMoth asks for nothing beyond the download.

AudioMoth holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Bubble Level has 702 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of AudioMoth's written reviews are positive against 41% of Bubble Level's.

AudioMoth ships an update every 11 months, Bubble Level weekly. The most recent releases landed on September 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | AudioMoth | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/audiomoth/id1530808973/reviews)** | [4.5 (702 ratings)](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382/reviews) |
| Number of ratings | 3 | **702** |
| Positive reviews | **100.0% of reviews** | 41.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 0 MB | 43 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Open Conservation Technology LTD](https://appshunter.io/developer/1530808975) | [Jens Rieckhof](https://appshunter.io/developer/354266124) |

## What reviewers say

### AudioMoth

[App page](https://appshunter.io/ios/app/audiomoth/id1530808973)

Synchronize the time and location of your AudioMoth device with an acoustic chime. Ensure your device's firmware is compatible by checking its documentation.

**Highlights:** Acoustic chime synchronization, Set device time, Set device location, Firmware compatibility check

**Features:** macOS Compatibility

**In-app purchases:** none


### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382)

This app transforms your phone into a precise leveling tool. It offers accurate angle measurement, inclination detection, and augmented reality features for DIY and professional use. Calibration is simple and quick.

**Highlights:** Ultra-precise angle measurement, Inclination and slope meter, Augmented reality ruler and protractor, Effortless one-touch calibration, Clear and easy-to-read display, User-friendly interface

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly Plan | $1.99 | per 7 days |
| Spirit Level Premium – Monthly | $2.99 | per month |
| Bubble Level Premium - Weekly | $2.99 | per 7 days |
| Bubble Level Premium - Monthly | $5.99 | per month |
| Spirit Level Premium – Annual | $14.99 | per year |
| Bubble Level Premium - Annual | $19.99 | per year |
| All features - No ads | $1.99 | one-time |
| Unlock all AR features | $5.99 | one-time |
| Discount Lifetime Premium | $14.99 | one-time |
| Bubble Level PREMIUM Lifetime | $19.99 | one-time |
| Bubble Level - Lifetime Premium | $29.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🔍 Accurate angle measurements
- 🛠️ Helpful for various tasks (telescopes, leveling, etc.)

**What reviewers complain about**

- 🤑 Expensive ad removal
- 🤖 Unreliable calibration
- 💤 Constant interruptions and ads
- 🚫 Unusable due to ads

**Reported bugs**

- App crashes on launch
- Measurement point behaves erratically

**Requested features**

- Ability to calibrate the app
- Option to change the display color


## Frequently asked questions

### Is AudioMoth free?

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

### Is Bubble Level free?

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

### Which has better reviews, AudioMoth or Bubble Level?

AudioMoth is rated higher. AudioMoth averages 5.0 out of 5 from 3 ratings, while Bubble Level averages 4.5 from 702 ratings.

### Do AudioMoth or Bubble Level have ads?

Bubble Level shows ads; AudioMoth does not.

### Which is updated more often, AudioMoth or Bubble Level?

AudioMoth ships an update every 11 months, and Bubble Level weekly. Most recently, AudioMoth was updated on September 24, 2026 and Bubble Level on October 17, 2026.

---

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