# WarmLink vs Bubble Level

The clearest difference is rating: Bubble Level at 4.5 against WarmLink's 3.5. Bubble Level also leads on review sentiment (41% vs 9%) and ratings volume (702 vs 2). WarmLink's advantage is in-app purchases (none vs 11) and ads (none vs shown). On price, 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. WarmLink asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: Bubble Level has 702 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 9% of WarmLink's written reviews are positive against 41% of Bubble Level's.

WarmLink ships an update every 4 weeks, Bubble Level weekly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | WarmLink | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/warmlink/id1548602505/reviews) | **[4.5 (702 ratings)](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382/reviews)** |
| Number of ratings | 2 | **702** |
| Positive reviews | 8.7% of reviews | **41.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 60 MB | 43 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [展悦 梁](https://appshunter.io/developer/982085158) | [Jens Rieckhof](https://appshunter.io/developer/354266124) |

## What reviewers say

### WarmLink

[App page](https://appshunter.io/ios/app/warmlink/id1548602505)

Easily control and monitor your heat pump from anywhere. View real-time status, adjust settings like temperature and mode, and receive alerts for any issues. The app provides detailed temperature history and proactive background support from suppliers.

**Highlights:** Remote heat pump control, Real-time status monitoring, Temperature curve visualization, Failure alerts, Background supplier support, ON/OFF and mode settings

**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 WarmLink free?

WarmLink 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, WarmLink or Bubble Level?

Bubble Level is rated higher. WarmLink averages 3.5 out of 5 from 2 ratings, while Bubble Level averages 4.5 from 702 ratings.

### Do WarmLink or Bubble Level have ads?

Bubble Level shows ads; WarmLink does not.

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

WarmLink ships an update every 4 weeks, and Bubble Level weekly. Most recently, WarmLink was updated on October 16, 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.*