# Cal Countdown vs Complication Lab

The clearest difference is review sentiment: Cal Countdown at 95% against Complication Lab's 23%. Cal Countdown also leads on rating (5.0 vs 3.5) and in-app purchases (none vs 3). Complication Lab's advantage is update cadence (every 4 weeks vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Complication Lab sells 3 in-app purchases, starting at $0.99 per month. Cal Countdown asks for nothing beyond the download.

Cal Countdown holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: Cal Countdown has 21 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 95% of Cal Countdown's written reviews are positive against 23% of Complication Lab's.

Cal Countdown ships an update every 3 months, Complication Lab every 4 weeks. The most recent releases landed on September 19, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Cal Countdown | Complication Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/cal-countdown/id1437604908/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/complication-lab/id1537137580/reviews) |
| Number of ratings | **21** | 4 |
| Positive reviews | **94.7% of reviews** | 22.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 11 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Franck Reyherme](https://appshunter.io/developer/1360894292) | [Olberry](https://appshunter.io/developer/571734225) |

## 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

**In-app purchases:** none


### Complication Lab

[App page](https://appshunter.io/ios/app/complication-lab/id1537137580)

Personalize your Apple Watch and iPhone with custom complications and widgets. Display health data, HomeKit information, and more with extensive customization options. Create an unlimited number of unique setups to match your lifestyle.

**Highlights:** 30+ health data types, Apple Watch complications, iPhone Lock Screen widgets, iPhone Home Screen widgets, HomeKit data integration, Custom colors and styles, Unlimited complications and widgets

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $9.99 | per year |
| Lifetime Subscription | $29.99 | one-time |


## Frequently asked questions

### Is Cal Countdown free?

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

### Is Complication Lab free?

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

### Which has better reviews, Cal Countdown or Complication Lab?

Cal Countdown is rated higher. Cal Countdown averages 5.0 out of 5 from 21 ratings, while Complication Lab averages 3.5 from 4 ratings.

### Do Cal Countdown or Complication Lab have ads?

Neither Cal Countdown nor Complication Lab shows ads.

### Which is updated more often, Cal Countdown or Complication Lab?

Cal Countdown ships an update every 3 months, and Complication Lab every 4 weeks. Most recently, Cal Countdown was updated on September 19, 2026 and Complication Lab on September 2, 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.*