# Subtracting Sardines HD vs I see! Math1

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.

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.

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.

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

## The numbers

| Metric | Subtracting Sardines HD | I see! Math1 |
| --- | --- | --- |
| Price | **$2.99** | $9.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/subtracting-sardines-hd/id468674475/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/i-see-math1/id550058952/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **85.0% of reviews** | 68.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 72 MB | 90 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marcel Widarto](https://appshunter.io/developer/467936872) | [がくげい](https://appshunter.io/developer/415230275) |

## What reviewers say

### Subtracting Sardines HD

[App page](https://appshunter.io/ios/app/subtracting-sardines-hd/id468674475)

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:** macOS Compatibility

**In-app purchases:** none


### I see! Math1

[App page](https://appshunter.io/ios/app/i-see-math1/id550058952)

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

**In-app purchases:** none


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