# Watermelon Draw Challenge vs Diamond tester º

The clearest difference is rating: Diamond tester º at 3.8 against Watermelon Draw Challenge's 1.4. Diamond tester º also leads on ads (none vs shown) and update cadence (fortnightly vs every 2 months). Watermelon Draw Challenge's advantage is monetization model (ad-supported vs free with in-app purchases) and ratings volume (20 vs 4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Watermelon Draw Challenge sells 1 in-app purchase, starting at $1.99 per 7 days and Diamond tester º sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Diamond tester º holds the better App Store score, 3.8 against 1.4. That said, the two scores are not equally well evidenced: Watermelon Draw Challenge has 20 ratings behind it against 4, so its average is the more settled of the two.

Watermelon Draw Challenge ships an update every 2 months, Diamond tester º fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Watermelon Draw Challenge | Diamond tester º |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (20 ratings)](https://appshunter.io/ios/app/watermelon-draw-challenge/id6758429792/reviews) | **[3.8 (4 ratings)](https://appshunter.io/ios/app/diamond-tester/id6760787913/reviews)** |
| Number of ratings | **20** | 4 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 207 MB | 65 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nam Tran Van](https://appshunter.io/developer/1823171023) | [Alberto Soto](https://appshunter.io/developer/1702225144) |

## What reviewers say

### Watermelon Draw Challenge

[App page](https://appshunter.io/ios/app/watermelon-draw-challenge/id6758429792)

Test your drawing accuracy with a fun watermelon filter. Drag lines to perfectly encircle watermelons, aiming for a high score. Enjoy this relaxing challenge and compete with friends.

**Highlights:** Drawing accuracy challenge, Perfect circle drawing, High score system, Relaxing gameplay, Compete with friends, Fun camera filter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |


### Diamond tester º

[App page](https://appshunter.io/ios/app/diamond-tester/id6760787913)

Quickly assess if a stone might be a real diamond using your device's sensors. Get instant feedback without needing tools or experience, ideal for buyers, sellers, or the simply curious.

**Highlights:** Test diamonds in seconds, Simple and intuitive interface, No technical knowledge needed, Uses device sensors for analysis, Fast and clear results, No account or data collection required

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week subscription | $2.99 | per 7 days |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Watermelon Draw Challenge free?

Watermelon Draw Challenge is free to download, with in-app purchases available.

### Is Diamond tester º free?

Diamond tester º is free to download, with in-app purchases available.

### Which has better reviews, Watermelon Draw Challenge or Diamond tester º?

Diamond tester º is rated higher. Watermelon Draw Challenge averages 1.4 out of 5 from 20 ratings, while Diamond tester º averages 3.8 from 4 ratings.

### Do Watermelon Draw Challenge or Diamond tester º have ads?

Watermelon Draw Challenge shows ads; Diamond tester º does not.

### Which is updated more often, Watermelon Draw Challenge or Diamond tester º?

Watermelon Draw Challenge ships an update every 2 months, and Diamond tester º fortnightly. Most recently, Watermelon Draw Challenge was updated on October 31, 2026 and Diamond tester º on October 31, 2026.

---

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