# 九九 vs Bubble Times Math

The clearest difference is review sentiment: Bubble Times Math at 100% against 九九's 0%. Bubble Times Math also leads on in-app purchases (none vs 1) and ads (none vs shown). 九九's advantage is iOS requirement (12.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. 九九 sells 1 one-off in-app purchase. Bubble Times Math asks for nothing beyond the download.

九九 ships an update every 5 months, Bubble Times Math weekly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 九九 | Bubble Times Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/easy/id1611285814/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 109 MB | 115 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sumie Watanabe](https://appshunter.io/developer/1349237972) | [Yasuaki Maino](https://appshunter.io/developer/1792614110) |

## What reviewers say

### 九九

[App page](https://appshunter.io/ios/app/easy/id1611285814)

This app offers a comprehensive multiplication and word problem learning experience with randomized practice questions. It includes a review mode for incorrect answers and is free to use with optional ad removal via in-app purchase.

**Highlights:** Randomized multiplication problems, Word problem practice, Review mode for incorrect answers, Calendar feature, Name and icon display for submissions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 九九アプリバナー広告非表示 | $1.99 | one-time |


### Bubble Times Math

[App page](https://appshunter.io/ios/app/bubble-times-math/id6741021188)

Learn multiplication tables through a fun, interactive game. Combine and split colorful number balls to solve equations and improve calculation skills. Offers timed and untimed modes for practice at any pace.

**Highlights:** Combine and split number balls, Unique gameplay mechanics, Timed Normal Mode, Untimed Endless Mode, Score-based challenges, Short, engaging play sessions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 九九 free?

九九 is free to download, with in-app purchases available.

### Is Bubble Times Math free?

Bubble Times Math is free to download, with no in-app purchases.

### Do 九九 or Bubble Times Math have ads?

九九 shows ads; Bubble Times Math does not.

### Which is updated more often, 九九 or Bubble Times Math?

九九 ships an update every 5 months, and Bubble Times Math weekly. Most recently, 九九 was updated on October 3, 2026 and Bubble Times Math on October 7, 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.*