Comparison

GX Timer vs AERO Caller

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Fast training timing
  • Custom training timing
  • Countdown timers
  • Stopwatch functionality
  • Timed alarms
  • Function configuration
Features
Read full description

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

About

AERO Caller

Read full description

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

GX Timer4 screens
AERO Caller4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
GX Timer versus AERO Caller: the parameters behind the verdict, then further details
ParameterGX TimerAERO Caller
PriceFree — better$1.99
Rating4.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better18.0
Further details — not scored
Size43 MB11 MB
Age rating4+4+
Developer美琴 宋Richard Hirst

In-app purchases

None

GX Timer

No in-app purchases

None

AERO Caller

No in-app purchases

Questions

Is GX Timer free?
GX Timer is free to download, with no in-app purchases.
Is AERO Caller free?
AERO Caller costs $1.99, with no in-app purchases.
Do GX Timer or AERO Caller have ads?
Neither GX Timer nor AERO Caller shows ads.
Which is updated more often, GX Timer or AERO Caller?
GX Timer ships an update every 3 weeks, and AERO Caller every 9 days. Most recently, GX Timer was updated on October 9, 2026 and AERO Caller on September 30, 2026.

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