# Simple_Clock vs Astra Prevention

The clearest difference is in-app purchases: Astra Prevention at none against Simple_Clock's 1. Astra Prevention also leads on ads (none vs shown) and rating (5.0 vs 4.7). Simple_Clock's advantage is ratings volume (146 vs 1). On price, update cadence and device support there is nothing between them.

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

Astra Prevention holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Simple_Clock has 146 ratings behind it against 1, so its average is the more settled of the two.

Simple_Clock ships an update weekly, Astra Prevention every 6 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Simple_Clock | Astra Prevention |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (146 ratings)](https://appshunter.io/ios/app/simple-clock/id6477709832/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/astra-prevention/id6761196289/reviews)** |
| Number of ratings | **146** | 1 |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 91 MB | 74 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seung-Un Ham](https://appshunter.io/developer/447543367) | [Nebulab Technologies Inc.](https://appshunter.io/developer/1888222338) |

## 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 |


### Astra Prevention

[App page](https://appshunter.io/ios/app/astra-prevention/id6761196289)

This app monitors your home or property for water damage. Receive real-time alerts for leaks, temperature changes, and system health. Remotely control water shutoff valves and manage system access for enhanced protection.

**Highlights:** Real-time water leak alerts, Temperature and freeze risk monitoring, Remote valve control, System health monitoring, Event history review, Multi-site management

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple_Clock free?

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

### Is Astra Prevention free?

Astra Prevention is free to download, with no in-app purchases.

### Which has better reviews, Simple_Clock or Astra Prevention?

Astra Prevention is rated higher. Simple_Clock averages 4.7 out of 5 from 146 ratings, while Astra Prevention averages 5.0 from 1 ratings.

### Do Simple_Clock or Astra Prevention have ads?

Simple_Clock shows ads; Astra Prevention does not.

### Which is updated more often, Simple_Clock or Astra Prevention?

Simple_Clock ships an update weekly, and Astra Prevention every 6 days. Most recently, Simple_Clock was updated on October 30, 2026 and Astra Prevention on October 24, 2026.

---

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