# ConcreteDNA vs Bubble Level

The clearest difference is rating: Bubble Level at 4.5 against ConcreteDNA's 4.0. Bubble Level also leads on ratings volume (702 vs 4). ConcreteDNA's advantage is in-app purchases (none vs 11) and 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 sells 11 in-app purchases, starting at $1.99 per 7 days. ConcreteDNA asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Bubble Level has 702 ratings behind it against 4, so its average is the more settled of the two.

ConcreteDNA ships an update fortnightly, Bubble Level weekly. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ConcreteDNA | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/concretedna/id1457340144/reviews) | **[4.5 (702 ratings)](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382/reviews)** |
| Number of ratings | 4 | **702** |
| Positive reviews | — | 41.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 34 MB | 43 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Converge](https://appshunter.io/developer/1457340143) | [Jens Rieckhof](https://appshunter.io/developer/354266124) |

## What reviewers say

### ConcreteDNA

[App page](https://appshunter.io/ios/app/concretedna/id1457340144)

Monitor concrete strength and temperature in real-time with sensor data sent directly to the cloud. Access live site data from anywhere, receive instant alerts, and generate QA reports for simplified paperwork. Supports collection from Converge Signal sensors.

**Highlights:** Live concrete strength feedback, Instant action alerts, Cloud access for teams, Temperature monitoring, QA report generation, Converge Signal sensor support

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

**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 ConcreteDNA free?

ConcreteDNA 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, ConcreteDNA or Bubble Level?

Bubble Level is rated higher. ConcreteDNA averages 4.0 out of 5 from 4 ratings, while Bubble Level averages 4.5 from 702 ratings.

### Do ConcreteDNA or Bubble Level have ads?

Bubble Level shows ads; ConcreteDNA does not.

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

ConcreteDNA ships an update fortnightly, and Bubble Level weekly. Most recently, ConcreteDNA was updated on October 6, 2026 and Bubble Level on October 17, 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.*