# Dr. Thump Lite — Watermelon Sweetness Analyzer

> Predicts watermelon sweetness using sound and size analysis. (iPhone/iPad app by Kevin Cornelius.)

- Source: https://appshunter.io/ios/app/dr-thump-lite/id6452048584 (this page in markdown: same URL + `.md`)
- Developer: [Kevin Cornelius](https://appshunter.io/developer/1698567948)
- Category: Food & Drink, Shopping
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 14.1 · 40 MB
- Languages: English
- Released: 2023-07-23
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dr-thump-lite/id6452048584/reviews.md

## What is Dr. Thump Lite?

How many times have you gone to the store, selected a watermelon, and then taken it home only to find out it was not very good? Dr. Thump Lite is an app that has been developed after years of research to take the randomness out of the process of selecting a quality watermelon of any type. By using the sound made from thumping a watermelon along with its general size, the app can predict the general level of sweetness or bitterness of the watermelon before purchase.

When using the app, the sweetness or bitterness of the watermelon will be displayed using a brix scale, which is designed to measure the sugar content in fruit juices. The lower the number, the more bitter the watermelon. The higher the number, the sweeter and less bitter. A typical watermelon is a 7 on this scale. Ideally, you are looking for values of 8 and above. For anything less than a 7, we recommend putting it back as it will be bitter tasting. 

When using the app, watermelons can be situated in a bin or removed and tested in isolation. When thumping, you can use your knuckles or fist. For a lot of testing to save your knuckles, we recommend something hard and solid, such as a cue ball or hard plastic disk (as in a caster wheel). Whatever the object, it should not make a noise itself—such as a ringing or clanking sound—after you thump the watermelon. 

A tutorial video on using this app can be found here: https://youtu.be/L7y10r6bS0Q. This video can also be accessed anytime through the tutorial option in the settings menu.

Dr. Thump Lite is fully functional with ads and without a rapid retest button. To remove ads and add the rapid retest feature, you can purchase the Dr. Thump Pro version.

## Key features

- Predicts watermelon sweetness
- Uses sound and size analysis
- Displays sweetness on brix scale
- Helps avoid bitter fruit
- Tutorial video available


## Frequently asked questions about Dr. Thump Lite

### How does Dr. Thump Lite predict watermelon sweetness?

Dr. Thump Lite analyzes the sound produced when thumping a watermelon, along with its general size. This data is used to predict the watermelon's sweetness or bitterness on a brix scale.

### What is the brix scale used for in Dr. Thump Lite?

The brix scale measures sugar content in fruit juices. In Dr. Thump Lite, a higher brix number indicates a sweeter watermelon, while a lower number suggests it may be bitter.

### What brix value should I look for when selecting a watermelon with Dr. Thump Lite?

A typical watermelon scores a 7 on the brix scale. For the sweetest and least bitter experience, Dr. Thump Lite recommends looking for values of 8 and above. Anything less than 7 may be bitter.

### Can I use Dr. Thump Lite on watermelons still in a bin?

Yes, watermelons can be tested while situated in a bin or removed and tested in isolation. The app is designed to accommodate different testing scenarios.

### How often is Dr. Thump Lite updated?

Dr. Thump Lite was last updated on 2023-07-25 to version 1.01. The app was initially released on 2023-07-23, indicating recent development and support.

### What devices does Dr. Thump Lite support?

Dr. Thump Lite is available for iPhone and iPod devices. It is designed for Apple's mobile operating system.

### What is the age rating for Dr. Thump Lite?

Dr. Thump Lite has an age rating of 4+. This means it is considered suitable for children aged 4 and above.

### Does Dr. Thump Lite have ads?

The Dr. Thump Lite version is fully functional with ads. To remove advertisements and gain access to a rapid retest button, users can purchase the Dr. Thump Pro version.

## Version history (last 2 releases)

### 1.01 — 2023-07-25

In the menu, an option was added that links to the pro-version of Dr. Thump Lite.

### 1.0 — 2023-07-23

No release notes.

## More apps by Kevin Cornelius

- [Dr. Thump Pro](https://appshunter.io/ios/app/dr-thump-pro/id6451497636)

All apps by Kevin Cornelius: https://appshunter.io/developer/1698567948

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*