# Altimeter & Barometer Pro vs GECSA

The clearest difference is in-app purchases: GECSA at none against Altimeter & Barometer Pro's 2. GECSA also leads on iOS requirement (15.0 vs 18.0). Altimeter & Barometer Pro's advantage is update cadence (every 6 days vs every 4 weeks) and chart position (#197 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Altimeter & Barometer Pro sells 2 in-app purchases, starting at $7.99 per year. GECSA asks for nothing beyond the download.

Altimeter & Barometer Pro ships an update every 6 days, GECSA every 4 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Altimeter & Barometer Pro | GECSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (567 ratings)](https://appshunter.io/ios/app/altimeter-and-barometer-pro/id1601138859/reviews)** | — |
| Number of ratings | **567** | — |
| Positive reviews | 84.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 4 weeks |
| Monetization | Freemium | — |
| Best chart rank | **#197** | — |
| Size | 30 MB | 18 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bog Bridges LLC](https://appshunter.io/developer/1480079828) | [Jongsun Park](https://appshunter.io/developer/1729543606) |

## What reviewers say

### Altimeter & Barometer Pro

[App page](https://appshunter.io/ios/app/altimeter-and-barometer-pro/id1601138859)

**Currently charting:** #197 Top Grossing · Weather (US App Store)

Continuously record barometric pressure and altitude using your device's sensors. Visualize trends with interactive graphs, receive weather alerts, and track ascent/descent. Features a standalone Apple Watch app and a global pressure map.

**Highlights:** Continuous barometric pressure and altitude recording, Interactive trend graphs, Barometric pressure alerts, Standalone Apple Watch app, Global pressure map, Real-time wind analyzer, Weather station data and forecasts

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $7.99 | per year |
| Alti-Barometer customer trial | Free | one-time |

**What reviewers like**

- 🚀 Excellent barometer and altimeter features
- 👍 User-friendly interface
- 💡 Innovative wind estimator
- 🔒 Respects user privacy
- 🔥 Highly recommended by users

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔋 High battery consumption reported
- 💰 Paid subscription model concerns some users

**Reported bugs**

- Wind estimator feature not working properly
- Pressure data reset issue for some users
- Apple Watch connectivity problems

**Requested features**

- Longer historical data graphs
- Customizable pressure drop alerts
- Metric unit support
- Outdoor temperature in complications


### GECSA

[App page](https://appshunter.io/ios/app/gecsa/id6477529529)

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

**In-app purchases:** none


## Frequently asked questions

### Is Altimeter & Barometer Pro free?

Altimeter & Barometer Pro is free to download, with in-app purchases available.

### Is GECSA free?

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

### Do Altimeter & Barometer Pro or GECSA have ads?

Neither Altimeter & Barometer Pro nor GECSA shows ads.

### Which is updated more often, Altimeter & Barometer Pro or GECSA?

Altimeter & Barometer Pro ships an update every 6 days, and GECSA every 4 weeks. Most recently, Altimeter & Barometer Pro was updated on October 27, 2026 and GECSA on October 24, 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.*