# Simple_Clock vs Engine Builder Pro

The clearest difference is in-app purchases: Engine Builder Pro at none against Simple_Clock's 1. Engine Builder Pro also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). On price and device support there is nothing between them.

Both are free to download. Simple_Clock sells 1 one-off in-app purchase. Engine Builder Pro asks for nothing beyond the download.

Simple_Clock ships an update weekly, Engine Builder Pro every 2 days. The most recent releases landed on October 30, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Simple_Clock | Engine Builder Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (146 ratings)](https://appshunter.io/ios/app/simple-clock/id6477709832/reviews)** | — |
| Number of ratings | **146** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 22 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seung-Un Ham](https://appshunter.io/developer/447543367) | [Gemma Beames](https://appshunter.io/developer/6811020787) |

## What reviewers say

### Simple_Clock

[App page](https://appshunter.io/ios/app/simple-clock/id6477709832)

A minimalist analog clock designed with a classic Apple iPad aesthetic. It offers the unique ability to integrate calendar events and reminders as clock hands for enhanced time management.

**Highlights:** Classic Apple iPad style analog clock, Optional calendar integration as clock needles, Optional reminders integration as clock needles, Minimalist design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Lifetime) | $4.99 | one-time |


### Engine Builder Pro

[App page](https://appshunter.io/ios/app/engine-builder-pro/id6813993112)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple_Clock free?

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

### Is Engine Builder Pro free?

Engine Builder Pro is free to download, with no in-app purchases.

### Do Simple_Clock or Engine Builder Pro have ads?

Simple_Clock shows ads; Engine Builder Pro does not.

### Which is updated more often, Simple_Clock or Engine Builder Pro?

Simple_Clock ships an update weekly, and Engine Builder Pro every 2 days. Most recently, Simple_Clock was updated on October 30, 2026 and Engine Builder Pro on October 5, 2026.

---

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