# Countdowner vs Sensorcal

The clearest difference is price: Countdowner at Free against Sensorcal's $0.99. Sensorcal's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Countdowner is free to download; Sensorcal costs $0.99 up front. Countdowner sells 1 one-off in-app purchase. Sensorcal asks for nothing beyond the download.

## The numbers

| Metric | Countdowner | Sensorcal |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Paid | — |
| Size | 6 MB | 1 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fabian Will](https://appshunter.io/developer/1842834628) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### Countdowner

[App page](https://appshunter.io/ios/app/countdowner-countdown-widget/id6758725253)

Easily track important dates like birthdays, vacations, and weddings with custom countdowns. Add widgets to your home and lock screens for quick visibility and receive timely reminders. Sync across devices and Apple Watch for seamless event tracking.

**Highlights:** Unlimited custom countdowns, Home and Lock Screen widgets, Local event reminders, Apple Watch sync, iCloud device sync, Customizable themes and icons

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $1.99 | one-time |


### Sensorcal

[App page](https://appshunter.io/ios/app/sensorcal-calibration-log/id6799455413)

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

**In-app purchases:** none


## Frequently asked questions

### Is Countdowner free?

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

### Is Sensorcal free?

Sensorcal costs $0.99, with no in-app purchases.

### Do Countdowner or Sensorcal have ads?

Neither Countdowner nor Sensorcal shows ads.

---

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