# Dr. Thump Pro — 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-pro/id6451497636 (this page in markdown: same URL + `.md`)
- Developer: [Kevin Cornelius](https://appshunter.io/developer/1698567948)
- Category: Food & Drink, Shopping
- Price: $1.99
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.1 · 40 MB
- Languages: English
- Released: 2023-07-23
- Data updated: 2026-08-30
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/dr-thump-pro/id6451497636/reviews.md

## What is Dr. Thump Pro?

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 Pro 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.

## Key features

- Predicts watermelon sweetness
- Uses sound and size analysis
- Displays sweetness on brix scale
- Helps avoid bitter watermelons
- Includes tutorial video

## Chart rankings

- #64 in Top Paid · Food & Drink (US App Store)

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/dr-thump-pro/id6451497636/reviews.md

### 5/5 — Absolutely Needed

*2024-04-29*

Dr. Thump is fantastic for anyone that likes watermelon. It totally takes the guesswork out of purchasing what USED to feel like a gamble. Knowing every time if you will have a sweet watermelon is such a life saver!

## Frequently asked questions about Dr. Thump Pro

### How does Dr. Thump Pro determine watermelon sweetness?

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

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

The brix scale measures sugar content in fruit juices. In Dr. Thump Pro, a higher brix number indicates a sweeter watermelon, with values of 8 and above being ideal. Numbers less than 7 suggest a bitter taste.

### Can I use Dr. Thump Pro on any watermelon?

Yes, Dr. Thump Pro is designed to analyze the quality of any type of watermelon, helping to take the guesswork out of selection.

### What is the price of Dr. Thump Pro?

Dr. Thump Pro is a paid application, available for $1.99. It does not feature in-app purchases or advertisements.

### Does Dr. Thump Pro have ads?

No, Dr. Thump Pro does not contain advertisements. It is a paid application designed to be ad-free.

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

Dr. Thump Pro is currently supported on iPhone and iPod devices.

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

Dr. Thump Pro was last updated on July 23, 2023, with version 1.0. Future updates will depend on developer plans.

### Where can I find a tutorial for Dr. Thump Pro?

A tutorial video demonstrating how to use Dr. Thump Pro is available via a link in the app's description and can also be accessed through the tutorial option within the app's settings menu.

## Version history (last 1 release)

### 1.0 — 2023-07-23

No release notes.

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## More apps by Kevin Cornelius

- [Dr. Thump Lite](https://appshunter.io/ios/app/dr-thump-lite/id6452048584)

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 2026-08-30.*