# Calzy vs Complication Lab

The clearest difference is review sentiment: Calzy at 77% against Complication Lab's 23%. Calzy also leads on rating (4.7 vs 3.5) and update cadence (every 2 days vs every 4 weeks). Complication Lab's advantage is price (Free vs $1.99) and iOS requirement (17.6 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Complication Lab is free to download; Calzy costs $1.99 up front. Calzy sells 3 one-off in-app purchases 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.

Calzy holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Calzy has 1.9K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 77% of Calzy's written reviews are positive against 23% of Complication Lab's.

Calzy ships an update every 2 days, Complication Lab every 4 weeks. The most recent releases landed on September 23, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Calzy | Complication Lab |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (1.9K ratings)](https://appshunter.io/ios/app/calzy/id623690732/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/complication-lab/id1537137580/reviews) |
| Number of ratings | **1.9K** | 4 |
| Positive reviews | **76.7% of reviews** | 22.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 weeks |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#72** | — |
| Size | 66 MB | 11 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Raja Vijayaraman](https://appshunter.io/developer/562575890) | [Olberry](https://appshunter.io/developer/571734225) |

## What reviewers say

### Calzy

[App page](https://appshunter.io/ios/app/calzy/id623690732)

**Currently charting:** #72 Top Paid · Productivity (US App Store)

This app offers a modern and intuitive way to perform everyday calculations. It features a unique Memory Area for reusing values, bookmarking for saved calculations, and leverages the latest iOS technologies for a seamless experience. Designed with privacy in mind, it's suitable for students and professionals alike.

**Highlights:** Memory Area for reusing values, Calculation bookmarking with titles, Basic and advanced calculation modes, Privacy mode with Face ID, Live Activity and Haptic Touch support, Customizable keypad layout, Dark and Light modes

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Huge Tip | $9.99 | one-time |


### 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 Calzy free?

Calzy costs $1.99, and also offers in-app purchases.

### Is Complication Lab free?

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

### Which has better reviews, Calzy or Complication Lab?

Calzy is rated higher. Calzy averages 4.7 out of 5 from 1.9K ratings, while Complication Lab averages 3.5 from 4 ratings.

### Do Calzy or Complication Lab have ads?

Neither Calzy nor Complication Lab shows ads.

### Which is updated more often, Calzy or Complication Lab?

Calzy ships an update every 2 days, and Complication Lab every 4 weeks. Most recently, Calzy was updated on September 23, 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.*