# power2max vs Bubble Level

The clearest difference is rating: Bubble Level at 4.5 against power2max's 1.3. Bubble Level also leads on review sentiment (41% vs 9%) and update cadence (weekly vs every 15 months). power2max's advantage is in-app purchases (none vs 11) and ads (none vs shown). 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. power2max asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.5 against 1.3. That said, the two scores are not equally well evidenced: Bubble Level has 702 ratings behind it against 48, so its average is the more settled of the two. Written reviews point the same way: 9% of power2max's written reviews are positive against 41% of Bubble Level's.

power2max ships an update every 15 months, Bubble Level weekly. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | power2max | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (48 ratings)](https://appshunter.io/ios/app/power2max/id1380651289/reviews) | **[4.5 (702 ratings)](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382/reviews)** |
| Number of ratings | 48 | **702** |
| Positive reviews | 8.6% of reviews | **41.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 40 MB | 43 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Saxonar GmbH Projektmanagement, Gerateentwicklung, Hard- und Software](https://appshunter.io/developer/1570243109) | [Jens Rieckhof](https://appshunter.io/developer/354266124) |

## What reviewers say

### power2max

[App page](https://appshunter.io/ios/app/power2max/id1380651289)

This utility app allows users to connect with their power2max power meter. It facilitates the registration of the device, installation of upgrades, and updating of the power meter's firmware.

**Highlights:** Register power meter, Install upgrades, Update firmware, Power meter management

**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 power2max free?

power2max 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, power2max or Bubble Level?

Bubble Level is rated higher. power2max averages 1.3 out of 5 from 48 ratings, while Bubble Level averages 4.5 from 702 ratings.

### Do power2max or Bubble Level have ads?

Bubble Level shows ads; power2max does not.

### Which is updated more often, power2max or Bubble Level?

power2max ships an update every 15 months, and Bubble Level weekly. Most recently, power2max was updated on September 17, 2026 and Bubble Level on September 24, 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.*