# Gemstone Identifier º vs World Clock

The clearest difference is rating: World Clock at 5.0 against Gemstone Identifier º's 4.5. World Clock also leads on update cadence (every 3 weeks vs every 5 months). Gemstone Identifier º's advantage is iOS requirement (15.0 vs 18.0). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Gemstone Identifier º sells 2 in-app purchases, starting at $6.99 per 7 days and World Clock sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

World Clock holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 12 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Gemstone Identifier º ships an update every 5 months, World Clock every 3 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Gemstone Identifier º | World Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (12 ratings)](https://appshunter.io/ios/app/gemstone-identifier/id6755660796/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/world-clocktimezone-converter/id6759943378/reviews)** |
| Number of ratings | **12** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 64 MB | 32 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qualitechnologies LLC](https://appshunter.io/developer/1855338819) | [Apphaze](https://appshunter.io/developer/1856021247) |

## What reviewers say

### Gemstone Identifier º

[App page](https://appshunter.io/ios/app/gemstone-identifier/id6755660796)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Gemstone Identifier Premium | $34.99 | per year |


### World Clock

[App page](https://appshunter.io/ios/app/world-clocktimezone-converter/id6759943378)

Easily track time across multiple cities with visual gradients and an intuitive converter. Organize contacts by time zone, calculate dates, and utilize customizable widgets. Works offline for core functionality.

**Highlights:** Instant time conversion with visual slider, Hourly timeline grid with overlapping work times, Organize contacts into groups by time zone, Date and duration calculator, Customizable widgets for home screen, Offline functionality for core features

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| World Clock Pro Monthly | $4.99 | per month |
| World Clock Pro Yearly | $19.99 | per year |
| World Clock Pro Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is Gemstone Identifier º free?

Gemstone Identifier º is free to download, with in-app purchases available.

### Is World Clock free?

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

### Which has better reviews, Gemstone Identifier º or World Clock?

World Clock is rated higher. Gemstone Identifier º averages 4.5 out of 5 from 12 ratings, while World Clock averages 5.0 from 7 ratings.

### Do Gemstone Identifier º or World Clock have ads?

Neither Gemstone Identifier º nor World Clock shows ads.

### Which is updated more often, Gemstone Identifier º or World Clock?

Gemstone Identifier º ships an update every 5 months, and World Clock every 3 weeks. Most recently, Gemstone Identifier º was updated on October 24, 2026 and World Clock on October 16, 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.*