Barometer & Altimeter vs Aviation Weather Decoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Barometer & Altimeter
This app provides precise barometer and altimeter readings with live data, session recording, and historical analysis. It features automatic device calibration and supports various Apple devices and accessibility features.
- Dual barometer and altimeter dashboards
- Real-time pressure and elevation readings
- Session recording with rich datasets
- Interactive Swift Charts for analysis
- Automatic device calibration
- Optional WeatherKit sea-level calibration
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HowHigh is a free barometer and altimeter toolkit for following altitude and air-pressure changes. See live readings, record sessions, and compare history on iPhone and iPad—without a subscription. USE HOWHIGH TO: - View live pressure, altitude, rate of change, elevation gain, and sea-level adjustments. - Record hikes, climbs, hills, stairs, weather observations, and experiments. - Review session history, compare recordings, and explore interactive charts. - Share results or export recorded data as CSV. - Choose manual calibration, optional WeatherKit calibration, or nearby NWS station calibration where supported. - See the active measurement source and sensor-confidence context alongside each reading. - Switch between metric and imperial units. Your recorded sessions stay on your device until you choose to share or export them. Core readings and saved history remain available offline; online calibration sources require a connection. HowHigh is designed for everyday observation and exploration. It does not replace certified instruments or safety-critical guidance. Track how altitude and air pressure change over time—all core features are free.
Aviation Weather Decoder
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Aviation Weather Decoder is a professional tool for airline pilots and aviation enthusiasts. Decode METAR, TAF, SPECI, and ATIS reports offline. Features: • Camera OCR recognition - snap a photo of printed reports, auto-extract and decode • Manual input - paste raw METAR/TAF text for instant translation • Live queries - fetch real-time METAR, TAF, NOTAM, and ATIS for airports worldwide • Supports METAR (routine weather), TAF (forecast), ATIS (terminal info), SPECI (special reports) • 100% local decoding - all decoding runs on device • History - auto-saves decode results for review • Bilingual UI - Chinese & English • Dark glass-morphism tech UI Premium subscription unlocks full decoding features: 7-day free trial, then $0.99/month auto-renewal. Terms of Use: https://777-9.com/terms.html Privacy Policy: https://777-9.com/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Barometer & Altimeter at none against Aviation Weather Decoder's 1. Barometer & Altimeter also leads on update cadence (every 10 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Aviation Weather Decoder sells 1 in-app purchase, starting at $0.99 per month. Barometer & Altimeter asks for nothing beyond the download.
Barometer & Altimeter ships an update every 10 days, Aviation Weather Decoder every 4 weeks. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | Barometer & Altimeter | Aviation Weather Decoder |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (25 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 25 — better | — |
| Update frequency | Every 10 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 7 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Thirty Seven Inc. | 阳 何 |
In-app purchases
Barometer & Altimeter
No in-app purchases
Aviation Weather Decoder
- Metar Decoder Premium7 Days trial$0.991 Month
Questions
Is Barometer & Altimeter free?
Is Aviation Weather Decoder free?
Do Barometer & Altimeter or Aviation Weather Decoder have ads?
Which is updated more often, Barometer & Altimeter or Aviation Weather Decoder?
Other comparisons
