# LD vs Bubble Times Math

The clearest difference is update cadence: Bubble Times Math at weekly against LD's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LD ships an update every 4 months, Bubble Times Math weekly. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | LD | Bubble Times Math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Free |
| Size | 122 MB | 115 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [一般社団法人 日本LD学会](https://appshunter.io/developer/1373157749) | [Yasuaki Maino](https://appshunter.io/developer/1792614110) |

## What reviewers say

### LD

[App page](https://appshunter.io/ios/app/ld-skaip/id1373157750)

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

**In-app purchases:** none


### 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 LD free?

LD is free to download, with no in-app purchases.

### Is Bubble Times Math free?

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

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

Neither LD nor Bubble Times Math shows ads.

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

LD ships an update every 4 months, and Bubble Times Math weekly. Most recently, LD was updated on October 16, 2026 and Bubble Times Math on October 7, 2026.

---

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