GX Timer vs AERO Caller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GX Timer
Control timing devices via Bluetooth for various training and exercise needs. Offers fast training, custom training, countdowns, stopwatches, and timed alarms. Configure functions and track exercise durations.
- Fast training timing
- Custom training timing
- Countdown timers
- Stopwatch functionality
- Timed alarms
- Function configuration
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Ganxin Timing is a software that controls timing devices through Bluetooth. When using the APP, you need to connect to the Bluetooth first. By default, the APP will be automatically connected to the first bluetooth device after started, and then it will communicate with the bluetooth device when using the function. The main functions are: 1: Fast training timing 2: Custom training timing 3: Timing 4: Countdown 5: Stopwatch timing 6: Function configuration 7: Exercise timing 8: Timed alarm
AERO Caller
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Aero Caller is designed for aerobatic pilots, callers and judges who need a clear, reliable way to practise and assess schedules. Select a schedule, choose left or right direction, use short or long descriptions, and step through manoeuvres manually or with hands-free voice commands. Pause and resume playback, skip to the next manoeuvre, and add notes without interrupting your session. The new judging tools let you score each manoeuvre, record comments and create a detailed flight summary. Local weather conditions can also be included, giving pilots useful context when reviewing their performance. Download and edit schedules, customise descriptions, add manoeuvre images, duplicate schedules and export backups. Whether you are training at the field, calling for a pilot or judging a flight, Aero Caller keeps every manoeuvre clear and every result organised.
Screenshots
Verdict
The clearest difference is price: GX Timer at Free against AERO Caller's $1.99. GX Timer also leads on iOS requirement (11.0 vs 18.0). AERO Caller's advantage is update cadence (every 9 days vs every 3 weeks). On 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
GX Timer is free to download; AERO Caller costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GX Timer ships an update every 3 weeks, AERO Caller every 9 days. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.
| Parameter | GX Timer | AERO Caller |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 43 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | 美琴 宋 | Richard Hirst |
In-app purchases
GX Timer
No in-app purchases
AERO Caller
No in-app purchases









