# Chess Alarm vs Blunderzone

The clearest difference is update cadence: Chess Alarm at every 2 days against Blunderzone's fortnightly. Blunderzone's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chess Alarm sells 2 in-app purchases, starting at $3.99 per month and Blunderzone sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Chess Alarm ships an update every 2 days, Blunderzone fortnightly. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chess Alarm | Blunderzone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/chess-alarm-puzzle-clock/id6759995656/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Monetization | Freemium | — |
| Size | 25 MB | 185 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TERRELL DERON RUSSELL](https://appshunter.io/developer/1882194165) | [RANKA s.r.o.](https://appshunter.io/developer/352576574) |

## What reviewers say

### Chess Alarm

[App page](https://appshunter.io/ios/app/chess-alarm-puzzle-clock/id6759995656)

This app transforms your morning alarm into a daily chess puzzle challenge. Solve tactics to wake up your brain and build a consistent chess habit with streak tracking and solution reviews. Train anytime with various difficulty levels and enjoy a smarter start to your day.

**Highlights:** Chess puzzle alarms, Daily puzzle training, Streak tracking, Solution review, Training mode, Multiple difficulty levels

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chess Alarm Premium Monthly | $3.99 | per month |
| Chess Alarm Premium | $19.99 | per year |


### Blunderzone

[App page](https://appshunter.io/ios/app/blunderzone/id6763366751)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blunderzone Basic | $3.99 | per month |
| Blunderzone Premium | $6.99 | per month |
| 20 AI explanations | $4.00 | one-time |
| 100 AI explanations | $18.00 | one-time |


## Frequently asked questions

### Is Chess Alarm free?

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

### Is Blunderzone free?

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

### Do Chess Alarm or Blunderzone have ads?

Neither Chess Alarm nor Blunderzone shows ads.

### Which is updated more often, Chess Alarm or Blunderzone?

Chess Alarm ships an update every 2 days, and Blunderzone fortnightly. Most recently, Chess Alarm was updated on October 19, 2026 and Blunderzone on October 25, 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.*