Global Time Machine vs Aviation Weather Decoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Global Time Machine
Easily track the time in any city worldwide. Add locations to your list to plan international calls, meetings, or connect with loved ones abroad. Features DST support and quick access to nearby hours.
- Track time in over 20,000 cities
- View nearby hours by scrolling
- Convenient world clock interface
- DST support for all locations
- Shake to reset functionality
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Global Time Machine shows every time zone you care about on one line. Add your cities, drag any scale and watch them all move together. Made for iPhone Duo: cities and your calendar side by side when open, a desk clock when half-folded. • World clock for 34,000+ cities — search in any language, works offline • Drag to travel in time: plan calls and meetings across time zones • Day and night at a glance: cities where it is night turn dark • Your own place is detected automatically, wherever you travel • Your calendar on the time line — see when you are busy • Half-hour and 45-minute offsets and daylight saving time, always correct • Shake to jump back to now • 12- or 24-hour clock, light and dark themes, 19 languages • Lists (Premium): Separate sets for team, family and friends • Invite a friend: See their local time and when they are busy Free plan: your place and two cities; one friend Premium: Unlimited cities, Lists, Unlimited friends, Find friends in contacts 14-day free trial, then a monthly or yearly subscription. Payment is charged to your Apple ID account. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Terms of Service: https://thetimemachine.global/terms
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 update cadence: Global Time Machine at every 5 days against Aviation Weather Decoder's every 2 months. On price, ads, in-app purchases and device support 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. Global Time Machine sells 2 in-app purchases, starting at $0.99 per month and Aviation Weather Decoder sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Global Time Machine ships an update every 5 days, Aviation Weather Decoder every 2 months. The most recent releases landed on November 6, 2026 and October 24, 2026 respectively.
| Parameter | Global Time Machine | Aviation Weather Decoder |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (7 ratings) — better | — |
| Positive reviews | 58.3% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | theMakeApp | 阳 何 |
In-app purchases
Global Time Machine
- Premium · Monthly14 Days trial$0.991 Month
- Premium · Yearly14 Days trial$9.991 Year
Aviation Weather Decoder
- Metar Decoder Premium7 Days trial$0.991 Month
Questions
Is Global Time Machine free?
Is Aviation Weather Decoder free?
Do Global Time Machine or Aviation Weather Decoder have ads?
Which is updated more often, Global Time Machine or Aviation Weather Decoder?
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