# KiddyClock vs Crystal ID

The clearest difference is rating: KiddyClock at 4.0 against Crystal ID's 3.5. KiddyClock also leads on in-app purchases (none vs 4) and iOS requirement (8.2 vs 16.0). Crystal ID's advantage is update cadence (every 10 days vs every 3 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Crystal ID sells 4 in-app purchases, starting at $2.99 per 7 days. KiddyClock asks for nothing beyond the download.

KiddyClock holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

KiddyClock ships an update every 3 months, Crystal ID every 10 days. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KiddyClock | Crystal ID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/kiddyclock/id589273693/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/crystal-id-ai-gem-scanner/id6743992156/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 62 MB |
| Requires iOS | **8.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AlexApps.Net Co](https://appshunter.io/developer/972261962) | [Simpel Nem IT](https://appshunter.io/developer/1084831792) |

## What reviewers say

### KiddyClock

[App page](https://appshunter.io/ios/app/kiddyclock/id589273693)

This app helps children learn healthy sleep habits by visually guiding them through different time frames like bedtime and wake-up time. Parents can customize start times and sounds for each period.

**Highlights:** Visual time frame indicators, Customizable start times, Configurable sounds, Bedtime guidance, Wake-up guidance

**Features:** macOS Compatibility

**In-app purchases:** none


### Crystal ID

[App page](https://appshunter.io/ios/app/crystal-id-ai-gem-scanner/id6743992156)

Instantly identify crystals and gemstones using AI. Explore a comprehensive encyclopedia with meanings, energy properties, and care instructions. Organize your collection and discover zodiac and chakra connections.

**Highlights:** AI-powered crystal identification, Full crystal encyclopedia, Meaning and energy properties, Care instructions, Zodiac and chakra connections, Personal collection tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly Premium | $5.99 | per month |
| Yearly Premium | $24.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is KiddyClock free?

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

### Is Crystal ID free?

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

### Which has better reviews, KiddyClock or Crystal ID?

KiddyClock is rated higher. KiddyClock averages 4.0 out of 5 from 4 ratings, while Crystal ID averages 3.5 from 2 ratings.

### Do KiddyClock or Crystal ID have ads?

Neither KiddyClock nor Crystal ID shows ads.

### Which is updated more often, KiddyClock or Crystal ID?

KiddyClock ships an update every 3 months, and Crystal ID every 10 days. Most recently, KiddyClock was updated on October 19, 2026 and Crystal ID on October 24, 2026.

---

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