# Waterloo Athan vs Sun Alarm Clock

The clearest difference is in-app purchases: Waterloo Athan at none against Sun Alarm Clock's 3. Waterloo Athan also leads on iOS requirement (10.0 vs 26.1). Sun Alarm Clock's advantage is update cadence (every 3 months vs every 31 months). On price, ads and device support there is nothing between them.

Both are free to download. Sun Alarm Clock sells 3 in-app purchases, starting at $0.99 per month. Waterloo Athan asks for nothing beyond the download.

Waterloo Athan ships an update every 31 months, Sun Alarm Clock every 3 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Waterloo Athan | Sun Alarm Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (27 ratings)](https://appshunter.io/ios/app/sun-alarm-clock/id1556630551/reviews)** |
| Number of ratings | — | **27** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 3 months** |
| Monetization | — | Freemium |
| Size | 13 MB | 34 MB |
| Requires iOS | **10.0** | 26.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Abdullah](https://appshunter.io/developer/873693566) | [Volker Voecking Software Engineering](https://appshunter.io/developer/390175341) |

## What reviewers say

### Waterloo Athan

[App page](https://appshunter.io/ios/app/waterloo-athan/id892073912)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sun Alarm Clock

[App page](https://appshunter.io/ios/app/sun-alarm-clock/id1556630551)

Wake up to natural celestial events. This app sets alarms for sunrise, sunset, moon phases, and twilight periods, adapting to your location and daylight saving changes. Customize offsets and manage multiple alarms easily.

**Highlights:** Alarms for sunrise and sunset, Moonrise and moonset alarms, Twilight and golden hour alerts, Customizable offsets, Location-aware timing, Supports multiple alarms

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $0.99 | per month |
| Premium (Yearly) | $9.99 | per year |
| Premium (One-Time Purchase) | $29.99 | one-time |


## Frequently asked questions

### Is Waterloo Athan free?

Waterloo Athan is free to download, with no in-app purchases.

### Is Sun Alarm Clock free?

Sun Alarm Clock is free to download, with in-app purchases available.

### Do Waterloo Athan or Sun Alarm Clock have ads?

Neither Waterloo Athan nor Sun Alarm Clock shows ads.

### Which is updated more often, Waterloo Athan or Sun Alarm Clock?

Waterloo Athan ships an update every 31 months, and Sun Alarm Clock every 3 months. Most recently, Waterloo Athan was updated on October 10, 2026 and Sun Alarm Clock on October 24, 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.*