# Календарь праздников vs Mystereogram

The clearest difference is price: Mystereogram at Free against Календарь праздников's $2.99. Mystereogram also leads on update cadence (every 6 days vs every 6 weeks) and review sentiment (100% vs 73%). Календарь праздников's advantage is in-app purchases (none vs 2) and ratings volume (17 vs 2). On ads and device support there is nothing between them.

Mystereogram is free to download; Календарь праздников costs $2.99 up front. Mystereogram sells 2 one-off in-app purchases. Календарь праздников asks for nothing beyond the download.

Mystereogram holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Календарь праздников has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of Календарь праздников's written reviews are positive against 100% of Mystereogram's.

Календарь праздников ships an update every 6 weeks, Mystereogram every 6 days. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Календарь праздников | Mystereogram |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.6 (17 ratings)](https://appshunter.io/ios/app/id403699635/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mystereogram/id1633778620/reviews)** |
| Number of ratings | **17** | 2 |
| Positive reviews | 73.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 26 MB |
| Requires iOS | **7.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Buzzworthy Vibe Co.](https://appshunter.io/developer/1624846087) | [Vitaly Kulagin](https://appshunter.io/developer/1524623012) |

## What reviewers say

### Календарь праздников

[App page](https://appshunter.io/ios/app/id403699635)

Discover a vast collection of holidays, memorable dates, and significant events from around the world. Get detailed, illustrated information on each event, including birthdays of famous people and city days. Share interesting facts with friends and personalize your calendar with important personal dates.

**Highlights:** Daily holiday and event guide, Detailed event information with illustrations, Shareable event facts, Event category icons, Personalized event calendar, Access to Calend.ru database

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Informative and useful
- 💡 Interesting and educational
- 🚀 Convenient and practical

**What reviewers complain about**

- 🐛 Bugs and crashes
- ⏱️ Outdated and not updated
- 🔍 Lack of search and filtering
- 📱 Compatibility issues with newer iOS versions

**Reported bugs**

- Events not displaying properly
- Descriptions and images not loading
- Crashes and freezes on certain devices

**Requested features**

- Add reminders and notifications for upcoming events
- Integrate with native calendar app
- Provide widget support
- Improve design and user interface


### Mystereogram

[App page](https://appshunter.io/ios/app/mystereogram/id1633778620)

Engage your eyes with a unique game that uses stereo images to provide a fun visual workout. Explore a museum filled with stereograms, earn coins, and unlock secret statuses. It's an entertaining challenge for all ages.

**Highlights:** Stereo image viewing, Eye exercise benefits, Museum exploration, In-game currency, Secret order statuses, Hint system

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 300 coins | $0.99 | one-time |
| 1000 coins | $1.99 | one-time |


## Frequently asked questions

### Is Календарь праздников free?

Календарь праздников costs $2.99, with no in-app purchases.

### Is Mystereogram free?

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

### Which has better reviews, Календарь праздников or Mystereogram?

Mystereogram is rated higher. Календарь праздников averages 4.6 out of 5 from 17 ratings, while Mystereogram averages 5.0 from 2 ratings.

### Do Календарь праздников or Mystereogram have ads?

Neither Календарь праздников nor Mystereogram shows ads.

### Which is updated more often, Календарь праздников or Mystereogram?

Календарь праздников ships an update every 6 weeks, and Mystereogram every 6 days. Most recently, Календарь праздников was updated on October 29, 2026 and Mystereogram on October 22, 2026.

---

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