# Bubble Level vs Redodo MPPT

The clearest difference is rating: Bubble Level at 4.5 against Redodo MPPT's 3.3. Bubble Level also leads on update cadence (weekly vs every 7 months) and ratings volume (702 vs 3). Redodo MPPT'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. Redodo MPPT asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.5 against 3.3. 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 complicate that: 41% of Bubble Level's written reviews are positive against 67% of Redodo MPPT's, so the app with the better star average is not the one people write more warmly about.

Bubble Level ships an update weekly, Redodo MPPT every 7 months. The most recent releases landed on September 24, 2026 and June 6, 2026 respectively.

## The numbers

| Metric | Bubble Level | Redodo MPPT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (702 ratings)](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/redodo-mppt/id6451382735/reviews) |
| Number of ratings | **702** | 3 |
| Positive reviews | 41.4% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 43 MB | 5 MB |
| Requires iOS | 16.6 | **10.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Jens Rieckhof](https://appshunter.io/developer/354266124) | [Shenzhen Maicheng Technology Innovation Co.,Ltd.](https://appshunter.io/developer/1697843618) |

## What reviewers say

### 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


### Redodo MPPT

[App page](https://appshunter.io/ios/app/redodo-mppt/id6451382735)

Monitor and control your solar power system with this app. Track solar panel and battery performance, manage connected loads remotely, and optimize system settings. It logs daily data for easy analysis.

**Highlights:** Monitor solar panel voltage, current, and power, Monitor battery voltage, current, and power, Remote control of connected loads, Real-time load monitoring, Adjust controller settings and parameters, Log daily system data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level free?

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

### Is Redodo MPPT free?

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

### Which has better reviews, Bubble Level or Redodo MPPT?

Bubble Level is rated higher. Bubble Level averages 4.5 out of 5 from 702 ratings, while Redodo MPPT averages 3.3 from 3 ratings.

### Do Bubble Level or Redodo MPPT have ads?

Bubble Level shows ads; Redodo MPPT does not.

### Which is updated more often, Bubble Level or Redodo MPPT?

Bubble Level ships an update weekly, and Redodo MPPT every 7 months. Most recently, Bubble Level was updated on September 24, 2026 and Redodo MPPT on June 6, 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.*