# Just Calendar vs Complication Lab

The clearest difference is rating: Just Calendar at 4.3 against Complication Lab's 3.5. Just Calendar also leads on ratings volume (294 vs 4) and update cadence (weekly vs every 4 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Just Calendar sells 12 in-app purchases, starting at $1.49 per 3 months and Complication Lab sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Just Calendar holds the better App Store score, 4.3 against 3.5. That said, the two scores are not equally well evidenced: Just Calendar has 294 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 37% of Just Calendar's written reviews are positive against 23% of Complication Lab's.

Just Calendar ships an update weekly, Complication Lab every 4 weeks. The most recent releases landed on August 27, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Just Calendar | Complication Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (294 ratings)](https://appshunter.io/ios/app/just-calendar-complication/id1334608986/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/complication-lab/id1537137580/reviews) |
| Number of ratings | **294** | 4 |
| Positive reviews | **36.6% of reviews** | 22.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 40 MB | 11 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tu Hoang](https://appshunter.io/developer/1078138581) | [Olberry](https://appshunter.io/developer/571734225) |

## What reviewers say

### Just Calendar

[App page](https://appshunter.io/ios/app/just-calendar-complication/id1334608986)

This app provides a straightforward calendar experience for your Apple Watch, offering enhanced viewing options for past and future events. It allows you to check dates, view schedules by week, month, or year, and quickly access event details directly from your watch face.

**Highlights:** View past and future event timelines, Calendar views: week, month, year, Date complication on watch face, Event complication on watch face, Customizable highlight color and layout

**Features:** macOS Compatibility

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Months Premium | $1.49 | per 3 months |
| Monthly Subscription | $1.99 | per month |
| One Year Premium | $6.99 | per year |
| 7-day Trial Premium | Free | one-time |
| Feature: Date Complication | $0.99 | one-time |
| Feature: Event Timeline | $0.99 | one-time |
| FULL VERSION | $1.99 | one-time |
| Feature: Date Complication | $1.99 | one-time |
| Feature: Paging Layout | $1.99 | one-time |
| Feature: Event Timeline | $1.99 | one-time |
| 33% OFF Premium | $2.99 | one-time |
| FULL VERSION | $9.99 | one-time |

**What reviewers like**

- 🗓️ Full month view
- 🔄 Syncs with Apple Calendar
- 🎨 Color-coded events
- 🌟 Better than Apple's calendar
- 📆 Year-round scrolling

**What reviewers complain about**

- 💸 Requires payment for full features
- ❌ Complications not working
- 🐛 App crashes frequently
- 🚫 Sync issues
- 💰 Bait and switch tactics

**Reported bugs**

- Complication not updating/showing random events
- App crashes on opening
- Syncing issues
- Payment not recognized
- App not opening after purchase

**Requested features**

- More complication options
- Calendar display in complications
- Ability to delete completed tasks directly
- Option to show tomorrow's events in complication when no current events
- 24-hour time format option


### 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 Just Calendar free?

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

### Is Complication Lab free?

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

### Which has better reviews, Just Calendar or Complication Lab?

Just Calendar is rated higher. Just Calendar averages 4.3 out of 5 from 294 ratings, while Complication Lab averages 3.5 from 4 ratings.

### Do Just Calendar or Complication Lab have ads?

Neither Just Calendar nor Complication Lab shows ads.

### Which is updated more often, Just Calendar or Complication Lab?

Just Calendar ships an update weekly, and Complication Lab every 4 weeks. Most recently, Just Calendar was updated on August 27, 2026 and Complication Lab on September 2, 2026.

---

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