# Subtracting Sardines

> Interactive 3D app for teaching basic subtraction skills to young children. (iPhone/iPad app by Marcel Widarto.)

- Source: https://appshunter.io/ios/app/subtracting-sardines/id468674886 (this page in markdown: same URL + `.md`)
- Developer: [Marcel Widarto](https://appshunter.io/developer/467936872)
- Category: Education, Games
- Price: $2.99
- Rating: 4.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 63 MB
- Languages: English
- Released: 2011-11-01
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/subtracting-sardines/id468674886/reviews.md

## What is Subtracting Sardines?

Golden App Award - appsforhomeschooling.com, 
"I have NEVER formally taught my five-year-old subtraction, and she GETS Subtracting Sardines. Right from her very first go at it, all the way up to nines, even the negative numbers! She’s currently scoring 100% in this app, which blows me away" 

"With the help of one friendly penguin, and a whole lotta sardines, practicing subtraction goes from boring to fun. Help your children practice subtraction skills on-the-go with this vibrant, kid-friendly app" - Best Apps for Kids, bestappsforkids.com 

"I found Subtracting Sardines and Adding Apples to be clever takes on Math manipulatives and a fun way to teach basic addition and subtraction skills" - The iPhone Mom, theiphonemom.com 

"Another wonderful app from the makers of 'Adding Apples' " - Technology in Education, techinspecialed.com 

"We recently reviewed the Adding apples so when we were told about this, we are curious to know how they handle the subtraction. They did managed to pull this off with flying colors." - Technology in Education, techinspecialed.com 


Subtracting Sardines is a fun learning experience with appealing and interactive 3D graphics. This new software is highly intuitive and with many elements to explore, discover and learn! The natural and logical interaction will help your child to develop a solid understanding of basic mathematics. 

LEARN HOW TO: 
● Solve math subtraction from 1-9 right up to 9-9 
● Count from -8 to 8, both visually and verbally (US English) 

● Develops Conceptual Understanding 
● Builds Confidence 

( For variation and to make sure all numbers are used and in different combinations, current keys are marked as done on correct subtraction. When all keys are marked they will reset. Can be disabled in the Settings ) 

● iPhone and iPod

● Also available on the Mac App Store

● Option to set the highest number to practice (will let you subtract up to e.g. 4-4) 
● Check off used numbers to encourage diverse addition problems or leave free after use for flexibility and repeated practice 

HAVE FUN: 
● Interacting with the Sardines (real 3D physics) 
● Interacting with the earned Gold Coins (real 3D physics) 
● Seeing how Penguin reacts to various user input 
● Exploring appealing animations and sounds 
● Receiving a Gold Coin for each correct answer 
● Collecting Gold Coins, and working towards 3 different trophies 
● Seeing statistics on your collected Gold Coins and Sardines 
● Put the Sardines into ice blocks while counting them 
● Brush remove fish bones while counting them 

SETTINGS INCLUDE: 
● Reset all 
● Automatic Clear and Plus keys - On/Off 
● Music - On/Off 

Additional statistics for the teacher/parent: 
● Accuracy 
● Accuracy History on each achievement 
● Correct subtractions 
● Incorrect subtractions 


Recommended Grades/Ages: 
Preschool, Kindergarten, Grades: 1 - 3 

Video: http://vimeo.com/30839837 


PRIVACY DISCLOSURE 

“Subtracting Sardines”: 

- Does not collect or share any personal data. 
- Does not contain any ads. 
- Does not contains In App Purchases 
- Does not contain Social Network Integration 
- Does not have external links

Support us by writing a review or rating the app! Your feedback is much appreciated! If you have any other questions, please contact us directly at: sogabeelab@gmail.com

## Key features

- Interactive 3D graphics
- Learn subtraction 1-9 up to 9-9
- Count from -8 to 8
- Develops conceptual understanding
- Builds confidence
- Collect gold coins and trophies
- Customizable practice settings

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/subtracting-sardines/id468674886/reviews.md

### 5/5 — Nice app

*2020-10-13, version 1.1.2*

Straight forward and works well. My kids like it.

### 3/5 — Negative numbers?

*2011-11-19, version 1.0*

Cute, but I don't get why negative numbers are allowed in a little kid app. If it said, " you can't eat 8 fish when you only have two", I would give more stars.

### 5/5 — Loved it enough to buy the iPad version after using the iPhone one!!

*2011-11-19, version 1.0*

Definitely at MUST-Have. Helps your child develop a solid understanding of basic mathematics in a wonderfully engaging and easy to understand manner.

## Frequently asked questions about Subtracting Sardines

### What ages is Subtracting Sardines recommended for?

Subtracting Sardines is recommended for Preschool, Kindergarten, and Grades 1-3, generally suitable for ages 4 and up.

### What subtraction skills does Subtracting Sardines teach?

The app teaches solving subtraction problems from 1-9 up to 9-9, and counting from -8 to 8 both visually and verbally.

### How does Subtracting Sardines make learning fun?

It uses appealing 3D graphics, interactive elements like sardines and gold coins with physics, animations, sounds, and rewards like gold coins and trophies.

### Can parents or teachers track progress with Subtracting Sardines?

Yes, the app provides additional statistics for parents and teachers, including accuracy, accuracy history on each achievement, correct subtractions, and incorrect subtractions.

### Does Subtracting Sardines collect personal data?

No, the app's privacy disclosure states that it does not collect or share any personal data.

### What devices is Subtracting Sardines available on?

Subtracting Sardines is available on iPhone and iPod. It is also available on the Mac App Store.

### How often is Subtracting Sardines updated?

The app was last updated on October 12, 2020, to version 1.1.2. Information on update frequency beyond this is not provided.

### What is the price of Subtracting Sardines?

Subtracting Sardines is a paid app priced at $2.99.

## Version history (last 1 release)

### 1.1.2 — 2020-10-12

General improvements and fixes.

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## More apps by Marcel Widarto

- [Adding Apples HD](https://appshunter.io/ios/app/adding-apples-hd/id464881662)
- [Adding Apples](https://appshunter.io/ios/app/adding-apples/id465950868)
- [Sight Words Hangman](https://appshunter.io/ios/app/sight-words-hangman/id467936869)
- [Subtracting Sardines HD](https://appshunter.io/ios/app/subtracting-sardines-hd/id468674475)
- [Multiplying Acorns HD](https://appshunter.io/ios/app/multiplying-acorns-hd/id477978513)

All apps by Marcel Widarto: https://appshunter.io/developer/467936872

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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.*