# JetWave vs Calendar Countdown Timers

The clearest difference is in-app purchases: JetWave at none against Calendar Countdown Timers's 2. Calendar Countdown Timers's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calendar Countdown Timers sells 2 in-app purchases, starting at $2.99 per 7 days. JetWave asks for nothing beyond the download.

JetWave ships an update every 2 months, Calendar Countdown Timers every 2 weeks. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | JetWave | Calendar Countdown Timers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calendar-countdown-timers/id6751187478/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 103 MB | 58 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JetWave Technology Co.,Ltd.](https://appshunter.io/developer/1787093385) | [Egor Kunovsky](https://appshunter.io/developer/1810232243) |

## What reviewers say

### JetWave

[App page](https://appshunter.io/ios/app/jetwave/id6739794246)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Calendar Countdown Timers

[App page](https://appshunter.io/ios/app/calendar-countdown-timers/id6751187478)

Visualize your upcoming events with real-time, second-by-second countdowns. This app syncs with your Apple Calendars, offering color-coded alerts as deadlines approach. It prioritizes your privacy by keeping all data on your device.

**Highlights:** Real-time second-by-second countdowns, Color-coded event proximity alerts, Seamless integration with Apple Calendars, Unified view of multiple calendars, Customizable calendar display, Privacy-first data handling

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Yearly Premium | $19.99 | per year |


## Frequently asked questions

### Is JetWave free?

JetWave is free to download, with no in-app purchases.

### Is Calendar Countdown Timers free?

Calendar Countdown Timers is free to download, with in-app purchases available.

### Do JetWave or Calendar Countdown Timers have ads?

Neither JetWave nor Calendar Countdown Timers shows ads.

### Which is updated more often, JetWave or Calendar Countdown Timers?

JetWave ships an update every 2 months, and Calendar Countdown Timers every 2 weeks. Most recently, JetWave was updated on September 9, 2026 and Calendar Countdown Timers on September 23, 2026.

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