# Bagua Compass Tools vs avAltimeter

The clearest difference is price: Bagua Compass Tools at Free against avAltimeter's $0.99. Bagua Compass Tools also leads on ratings volume (126 vs 19) and iOS requirement (11.0 vs 17.6). avAltimeter's advantage is rating (4.6 vs 3.8) and in-app purchases (none vs 1). On update cadence and device support there is nothing between them.

Bagua Compass Tools is free to download; avAltimeter costs $0.99 up front. Bagua Compass Tools sells 1 one-off in-app purchase. avAltimeter asks for nothing beyond the download.

avAltimeter holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Bagua Compass Tools has 126 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 40% of Bagua Compass Tools's written reviews are positive against 50% of avAltimeter's.

Bagua Compass Tools ships an update every 7 months, avAltimeter every 4 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Bagua Compass Tools | avAltimeter |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.8 (126 ratings)](https://appshunter.io/ios/app/bagua-compass-tools/id1071645627/reviews) | **[4.6 (19 ratings)](https://appshunter.io/ios/app/avaltimeter/id1120306812/reviews)** |
| Number of ratings | **126** | 19 |
| Positive reviews | 39.7% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 27 MB | 2 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Huy Phan](https://appshunter.io/developer/1030216928) | [Aviametrix, LLC](https://appshunter.io/developer/1120306811) |

## What reviewers say

### Bagua Compass Tools

[App page](https://appshunter.io/ios/app/bagua-compass-tools/id1071645627)

This app helps you understand Feng Shui principles by calculating your personal "gua" symbol based on your birthday. It then uses your device's compass to identify auspicious and inauspicious directions for your living space, offering tips to enhance positive energy and neutralize negative influences.

**Highlights:** Personal "gua" symbol calculation, Eight flow directions of Qi detection, Auspicious and inauspicious direction identification, Compass-based directional guidance, Tips for utilizing or neutralizing directions

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock full version | $4.99 | one-time |


### avAltimeter

[App page](https://appshunter.io/ios/app/avaltimeter/id1120306812)

This aviation-focused altimeter app provides accurate altitude readings using built-in pressure sensors. It offers Kollsman adjustment, density altitude calculations, and oxygen requirement warnings for increased flight safety.

**Highlights:** Kollsman adjustment for barometric pressure, Density Altitude and True Airspeed calculation, Automatic barometric pressure updates from airports, Oxygen requirement warnings based on altitude, Imperial/Metric unit selection, Day/Night illumination modes

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bagua Compass Tools free?

Bagua Compass Tools is free to download, with in-app purchases available.

### Is avAltimeter free?

avAltimeter costs $0.99, with no in-app purchases.

### Which has better reviews, Bagua Compass Tools or avAltimeter?

avAltimeter is rated higher. Bagua Compass Tools averages 3.8 out of 5 from 126 ratings, while avAltimeter averages 4.6 from 19 ratings.

### Do Bagua Compass Tools or avAltimeter have ads?

Bagua Compass Tools shows ads; avAltimeter does not.

### Which is updated more often, Bagua Compass Tools or avAltimeter?

Bagua Compass Tools ships an update every 7 months, and avAltimeter every 4 months. Most recently, Bagua Compass Tools was updated on November 2, 2026 and avAltimeter on November 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.*