# Bubble Level + Spirit Level vs 4Wheel Aligner

The clearest difference is in-app purchases: 4Wheel Aligner at none against Bubble Level + Spirit Level's 7. 4Wheel Aligner also leads on ads (none vs shown) and iOS requirement (8.1 vs 16.6). Bubble Level + Spirit Level's advantage is update cadence (fortnightly vs every 6 months). On price and device support there is nothing between them.

Both are free to download. Bubble Level + Spirit Level sells 7 in-app purchases, starting at $0.99 per 7 days. 4Wheel Aligner asks for nothing beyond the download.

Bubble Level + Spirit Level ships an update fortnightly, 4Wheel Aligner every 6 months. The most recent releases landed on October 25, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Bubble Level + Spirit Level | 4Wheel Aligner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (35 ratings)](https://appshunter.io/ios/app/bubble-level-plus-spirit-level/id1547834136/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 3 MB |
| Requires iOS | 16.6 | **8.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jens Rieckhof](https://appshunter.io/developer/354266124) | [思 李](https://appshunter.io/developer/1611668585) |

## What reviewers say

### Bubble Level + Spirit Level

[App page](https://appshunter.io/ios/app/bubble-level-plus-spirit-level/id1547834136)

Transform your smartphone into a precise measuring tool. This application offers two modes for accurately leveling surfaces or measuring angles, with calibration made simple. It's ideal for tasks like hanging pictures, checking table levels, or calculating roof pitches.

**Highlights:** Bubble level and spirit level modes, Accurate to one tenth of a degree, Easy calibration, Camera support, Multiple color schemes, Angle and slope measurement

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Level - Weekly | $0.99 | per 7 days |
| Bubble Level - Weekly | $1.99 | per 7 days |
| Bubble Level - Annual | $6.99 | per year |
| Bubble Level - Annual | $8.99 | per year |
| Bubble Level - Lifetime Discount | $9.99 | one-time |
| Bubble Level - Lifetime Premium | $12.99 | one-time |
| Bubble Level - Lifetime | $19.99 | one-time |


### 4Wheel Aligner

[App page](https://appshunter.io/ios/app/4wheel-aligner/id1616582492)

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level + Spirit Level free?

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

### Is 4Wheel Aligner free?

4Wheel Aligner is free to download, with no in-app purchases.

### Do Bubble Level + Spirit Level or 4Wheel Aligner have ads?

Bubble Level + Spirit Level shows ads; 4Wheel Aligner does not.

### Which is updated more often, Bubble Level + Spirit Level or 4Wheel Aligner?

Bubble Level + Spirit Level ships an update fortnightly, and 4Wheel Aligner every 6 months. Most recently, Bubble Level + Spirit Level was updated on October 25, 2026 and 4Wheel Aligner on September 19, 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.*