# GX Timer vs AERO Caller

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.

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.

## The numbers

| Metric | GX Timer | AERO Caller |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/gx-timer/id1600052896/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 43 MB | 11 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [美琴 宋](https://appshunter.io/developer/1160294086) | [Richard Hirst](https://appshunter.io/developer/1879153964) |

## What reviewers say

### GX Timer

[App page](https://appshunter.io/ios/app/gx-timer/id1600052896)

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:** macOS Compatibility

**In-app purchases:** none


### AERO Caller

[App page](https://appshunter.io/ios/app/aero-caller/id6759510616)

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*