# AtCoder Alarm vs Loudly

The clearest difference is in-app purchases: AtCoder Alarm at none against Loudly's 2. AtCoder Alarm also leads on iOS requirement (15.5 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Loudly sells 2 in-app purchases, starting at $9.99 per month. AtCoder Alarm asks for nothing beyond the download.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on September 6, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | AtCoder Alarm | Loudly |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Daily | Daily |
| Monetization | Free | — |
| Size | 27 MB | 23 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kiichi Ito](https://appshunter.io/developer/1505735244) | [Hoan Nguyen](https://appshunter.io/developer/1742104127) |

## What reviewers say

### AtCoder Alarm

[App page](https://appshunter.io/ios/app/atcoder-alarm/id1671964226)

This alarm clock requires users to solve a simple programming problem to turn it off. Problems are randomly selected from past AtCoder "A" tasks. Ensure you wake up on time with this unique challenge.

**Highlights:** Solve programming problems to stop alarm, Random AtCoder "A" task selection, Ensures waking up, Requires AtCoder pre-registration

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

**In-app purchases:** none


### Loudly

[App page](https://appshunter.io/ios/app/loudly-alarm-clock/id6752642413)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Yearly Trial | $29.99 | per year |


## Frequently asked questions

### Is AtCoder Alarm free?

AtCoder Alarm is free to download, with no in-app purchases.

### Is Loudly free?

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

### Do AtCoder Alarm or Loudly have ads?

Neither AtCoder Alarm nor Loudly shows ads.

### Which is updated more often, AtCoder Alarm or Loudly?

AtCoder Alarm ships an update daily, and Loudly daily. Most recently, AtCoder Alarm was updated on September 6, 2026 and Loudly on September 7, 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.*