# LD vs Number line matching

The clearest difference is ads: LD at none against Number line matching's shown. Number line matching's advantage is update cadence (every 9 days vs every 4 months) and device support (3 vs 1). On price and in-app purchases 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, Number line matching every 9 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | LD | Number line matching |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 9 days** |
| Size | 122 MB | 82 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [一般社団法人 日本LD学会](https://appshunter.io/developer/1373157749) | [kenta yamada](https://appshunter.io/developer/1698424335) |

## What reviewers say

### LD

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

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

**In-app purchases:** none


### Number line matching

[App page](https://appshunter.io/ios/app/number-line-matching/id6472777849)

**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 Number line matching free?

Number line matching is free to download, with no in-app purchases.

### Do LD or Number line matching have ads?

Number line matching shows ads; LD does not.

### Which is updated more often, LD or Number line matching?

LD ships an update every 4 months, and Number line matching every 9 days. Most recently, LD was updated on November 2, 2026 and Number line matching on October 30, 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.*