# Bubble Level + Compass vs NagTag

The clearest difference is ads: NagTag at none against Bubble Level + Compass's shown. Bubble Level + Compass's advantage is update cadence (every 4 months vs every 19 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bubble Level + Compass ships an update every 4 months, NagTag every 19 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass | NagTag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (35 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 14 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [KOALABRAIN LTD](https://appshunter.io/developer/1228230511) |

## What reviewers say

### Bubble Level + Compass

[App page](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463)

This utility app provides a precise bubble level for horizontal, vertical, and surface angle measurements, along with a true-north compass. It offers advanced calibration options and works on iOS devices. A Pro version is available for additional features.

**Highlights:** Horizontal and vertical level measurements, Surface angle readings, True north compass, Advanced calibration, Magnetic declination reading, Accelerometer/Gyro switch

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

**In-app purchases:** none


### NagTag

[App page](https://appshunter.io/ios/app/nagtag/id6464128643)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level + Compass free?

Bubble Level + Compass is free to download, with no in-app purchases.

### Is NagTag free?

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

### Do Bubble Level + Compass or NagTag have ads?

Bubble Level + Compass shows ads; NagTag does not.

### Which is updated more often, Bubble Level + Compass or NagTag?

Bubble Level + Compass ships an update every 4 months, and NagTag every 19 months. Most recently, Bubble Level + Compass was updated on November 2, 2026 and NagTag on October 30, 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.*