# Cal Countdown vs Gapper

The clearest difference is in-app purchases: Cal Countdown at none against Gapper's 1. Cal Countdown also leads on ads (none vs shown). Gapper's advantage is update cadence (every 5 days vs every 8 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Gapper sells 1 one-off in-app purchase. Cal Countdown asks for nothing beyond the download.

Cal Countdown ships an update every 8 months, Gapper every 5 days. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Cal Countdown | Gapper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/cal-countdown/id1437604908/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 94.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 7 MB | 10 MB |
| Requires iOS | **17.6** | 18.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Franck Reyherme](https://appshunter.io/developer/1360894292) | [CHING-HAO FAN](https://appshunter.io/developer/1864778385) |

## What reviewers say

### Cal Countdown

[App page](https://appshunter.io/ios/app/cal-countdown/id1437604908)

This app automatically displays a color-coded countdown to your next calendar event. It's designed for quick glances on your Apple Watch face or iPhone "Today" screen, helping you manage your schedule efficiently without manual calculations.

**Highlights:** Automatic countdown to next calendar event, Color-coded urgency indicators, Apple Watch complication support, iPhone "Today" widget, Calendar data integration, Option to skip specific events

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Gapper

[App page](https://appshunter.io/ios/app/gapper-calendar-helper/id6760322182)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gapper Pro Unlock | $0.99 | one-time |


## Frequently asked questions

### Is Cal Countdown free?

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

### Is Gapper free?

Gapper is free to download, with in-app purchases available.

### Do Cal Countdown or Gapper have ads?

Gapper shows ads; Cal Countdown does not.

### Which is updated more often, Cal Countdown or Gapper?

Cal Countdown ships an update every 8 months, and Gapper every 5 days. Most recently, Cal Countdown was updated on October 6, 2026 and Gapper on October 5, 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.*