# Doozis vs Loud Alarm Clock

The clearest difference is iOS requirement: Doozis at 13.0 against Loud Alarm Clock's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Doozis sells 4 in-app purchases, starting at $4.99 per month and Loud Alarm Clock sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Doozis ships an update every 3 weeks, Loud Alarm Clock every 5 weeks. The most recent releases landed on October 28, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Doozis | Loud Alarm Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/loud-alarm-clock-smartclock/id6748640802/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 130 MB | 53 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Doozis](https://appshunter.io/developer/1802569614) | [APPLU DIGITAL LTDA](https://appshunter.io/developer/1840502147) |

## What reviewers say

### Doozis

[App page](https://appshunter.io/ios/app/doozis/id6743390051)

**Features:** Apple Wallet, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription Premium (Monthly) | $4.99 | per month |
| Subscription Premium + (Monthly) | $9.99 | per month |
| Subscription Premium (Yearly) | $49.99 | per year |
| Subscription Premium (Yearly) | $99.99 | per year |


### Loud Alarm Clock

[App page](https://appshunter.io/ios/app/loud-alarm-clock-smartclock/id6748640802)

This alarm clock app uses math challenges and loud sounds to ensure you wake up on time. It offers various alarm sounds, sleep aids, and smart features like barcode scanning and phone shaking to prevent snoozing.

**Highlights:** Math problems to disable alarm, Extremely loud alarm sounds, Sleep sounds and timer, Barcode scanner to turn off, Phone shake to stop alarm, Wake-up weather and news briefing

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access to the App | $2.99 | per month |
| Premium Access to the App | $9.99 | per 7 days |
| Premium Access to the App | $19.99 | per year |
| Premium Access to the App | $49.99 | one-time |


## Frequently asked questions

### Is Doozis free?

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

### Is Loud Alarm Clock free?

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

### Do Doozis or Loud Alarm Clock have ads?

Neither Doozis nor Loud Alarm Clock shows ads.

### Which is updated more often, Doozis or Loud Alarm Clock?

Doozis ships an update every 3 weeks, and Loud Alarm Clock every 5 weeks. Most recently, Doozis was updated on October 28, 2026 and Loud Alarm Clock on October 20, 2026.

---

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