Comparison

Subtracting Sardines HD vs I see! Math1

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Subtracting Sardines HD

This app makes practicing subtraction fun and engaging for young learners. Through interactive 3D graphics and playful elements like penguins and sardines, children can build a solid understanding of basic math concepts and gain confidence.

Highlights
  • Practice subtraction from 1-9 up to 9-9
  • Count from -8 to 8 visually and verbally
  • Develop conceptual understanding
  • Interactive 3D graphics and physics
  • Earn gold coins and trophies
  • Track accuracy and progress statistics
Features
Read full description

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 HD is definitely worth purchasing for children beginning to learn subtraction. Children will have fun and conceptually learn the principles of subtraction from this app" - iHeartThisApp.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 ) ● Play on iPad, or Apple Silicon Mac — one purchase, both devices. 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 ● Fullscreen Toggle Additional statistics for the teacher/parent: ● Accuracy ● Accuracy History on each achievement ● Correct subtractions ● Incorrect subtractions Video: http://vimeo.com/30839837 Recommended Ages: 4-7, 8-10, parents PRIVACY DISCLOSURE “Subtracting Sardines HD - Tasty Math Facts”: - Does not collect or share any personal data. - Does not contain any ads. - Does not contains In App Purchases

About

I see! Math1

This app offers a comprehensive math curriculum for first graders, covering all essential units through interactive animations, voiceovers, and engaging stories. It provides bilingual learning in English and Japanese with subtitles, and includes practice drills to reinforce skills. The design is safe and secure, with no ads or in-app purchases.

Highlights
  • Full year curriculum for 1st graders
  • Interactive animated explanations
  • Bilingual English/Japanese support
  • Subtitled animations
  • Practice drills with hints
  • Safe and ad-free environment
Read full description

"I see! Math for 1st Graders" I see! Math 1 is a full-fledged learning app that adheres to the Japanese Ministry of Education, Culture, Sports, Science and Technology's curriculum guidelines. It covers all math units (25 units, 50 sections) that first graders learn in a year. It's comprised of interactive explanation sections, where you can learn all units enjoyably with full animation and full voice, and problem-solving practice sections to solidify academic skills. Bilingual Learning Experience The app seamlessly switches between English and Japanese. We meticulously focused on native expressions and native voices to ensure children can learn math naturally in either language. Even the humor is designed in consultation with native speakers. To accommodate environments like classrooms where sound isn't always an option, all animations come with subtitles ( English and Japanese). "Let's See!" Corner: Cute characters come to life through vivid animations, teaching math concepts clearly and stimulating curiosity through engaging stories. Kids even interact with the movies at times! Everyone gets absorbed in the humor-filled storylines. We often hear from children about their favorite characters! "Practice" Drill Corner: With abundant hints, children experience the satisfaction of solving problems independently, steadily deepening their understanding from basic to advanced concepts. Safe and Secure Design: The app has absolutely no in-app purchases, ads, or links to external sites. We don't collect personal information, nor do we provide it to third parties. We provide an environment where your child can learn safely and confidently on their own. Highly Trusted by Educators: This app has been widely adopted in general elementary schools, and notably, many educational boards and schools have introduced it in support classes for truancy and special needs classes. It transforms often dry learning content into engaging, humor-infused stories. Contents: How Many? (1) How Many? (2) How Many? (3) Which One? Parts and Whole Find the Part How Many are Hiding? Various Shapes (1) Various Shapes (2) How Many in All? (1) How Many in All? (2) Add With Zero Addition How Many are Left? How Many More? Zero in subtraction Subtraction Calculation With 3 Numbers Compare Length Compare Capacity Compare Area How to Read a Clock Numbers up to 20 Numbers Greater Than 20 Numbers Greater Than 100

Verdict

The call

The clearest difference is price: Subtracting Sardines HD at $2.99 against I see! Math1's $9.99. Subtracting Sardines HD also leads on review sentiment (85% vs 68%) and ratings volume (3 vs 1). I see! Math1's advantage is update cadence (every 4 months vs every 31 months). On rating, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Subtracting Sardines HD costs $2.99 and I see! Math1 $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Subtracting Sardines HD against 5.0 for I see! Math1. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews are what separate them: 85% of Subtracting Sardines HD's written reviews are positive against 68% of I see! Math1's.

UpkeepUpdate frequency

Subtracting Sardines HD ships an update every 31 months, I see! Math1 every 4 months. Both last shipped on November 1, 2026.

Scorecard5 real differences · 5 level
Subtracting Sardines HD versus I see! Math1: the parameters behind the verdict, then further details
ParameterSubtracting Sardines HDI see! Math1
Price$2.99 — better$9.99
Rating5.0 (3 ratings)5.0 (1 ratings)
Positive reviews85.0% of reviews — better68.4% of reviews
Number of ratings3 — better1
Update frequencyEvery 31 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPad
Requires iOS12.0 — better15.0
Further details — not scored
Size72 MB90 MB
Age rating4+4+
DeveloperMarcel Widartoがくげい

Customer experience

Subtracting Sardines HD

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews20 reviews
Positive85.0%
Neutral15.0%
Negative0.0%

I see! Math1

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews19 reviews
Positive68.4%
Neutral0.0%
Negative31.6%

In-app purchases

None

Subtracting Sardines HD

No in-app purchases

None

I see! Math1

No in-app purchases

Questions

Is Subtracting Sardines HD free?
Subtracting Sardines HD costs $2.99, with no in-app purchases.
Is I see! Math1 free?
I see! Math1 costs $9.99, with no in-app purchases.
Which has better reviews, Subtracting Sardines HD or I see! Math1?
Subtracting Sardines HD and I see! Math1 are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do Subtracting Sardines HD or I see! Math1 have ads?
Neither Subtracting Sardines HD nor I see! Math1 shows ads.
Which is updated more often, Subtracting Sardines HD or I see! Math1?
Subtracting Sardines HD ships an update every 31 months, and I see! Math1 every 4 months. Most recently, Subtracting Sardines HD was updated on November 1, 2026 and I see! Math1 on November 1, 2026.

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