# Subtraction with regrouping vs Square Panda Bubbles

The clearest difference is price: Square Panda Bubbles at Free against Subtraction with regrouping's $0.99. Square Panda Bubbles also leads on update cadence (every 6 weeks vs every 41 months) and iOS requirement (8.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Square Panda Bubbles is free to download; Subtraction with regrouping costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Subtraction with regrouping ships an update every 41 months, Square Panda Bubbles every 6 weeks. The most recent releases landed on September 14, 2026 and August 11, 2026 respectively.

## The numbers

| Metric | Subtraction with regrouping | Square Panda Bubbles |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.2 (10 ratings)](https://appshunter.io/ios/app/square-panda-bubbles/id1162301083/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 7 MB | 146 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Red Hong](https://appshunter.io/developer/542314714) | [Square Panda Inc.](https://appshunter.io/developer/1088414097) |

## What reviewers say

### Subtraction with regrouping

[App page](https://appshunter.io/ios/app/subtraction-with-regrouping/id838762880)

**Features:** macOS Compatibility

**In-app purchases:** none


### Square Panda Bubbles

[App page](https://appshunter.io/ios/app/square-panda-bubbles/id1162301083)

This educational game helps young children learn letter sounds, phonics, and new words by popping bubbles. It's designed for ages 2-5 and is compatible with the Square Panda Playset, using smart letters to reinforce learning.

**Highlights:** Learn letter sounds, Phonics instruction, Word building, Spelling practice, Vocabulary comprehension, Concepts about print

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subtraction with regrouping free?

Subtraction with regrouping costs $0.99, with no in-app purchases.

### Is Square Panda Bubbles free?

Square Panda Bubbles is free to download, with no in-app purchases.

### Do Subtraction with regrouping or Square Panda Bubbles have ads?

Neither Subtraction with regrouping nor Square Panda Bubbles shows ads.

### Which is updated more often, Subtraction with regrouping or Square Panda Bubbles?

Subtraction with regrouping ships an update every 41 months, and Square Panda Bubbles every 6 weeks. Most recently, Subtraction with regrouping was updated on September 14, 2026 and Square Panda Bubbles on August 11, 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.*