# Articulation IV vs Reading Skills 4A

The clearest difference is price: Reading Skills 4A at $2.99 against Articulation IV's $9.99. Articulation IV's advantage is device support (3 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Articulation IV costs $9.99 and Reading Skills 4A $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Articulation IV ships an update every 9 months, Reading Skills 4A every 17 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Articulation IV | Reading Skills 4A |
| --- | --- | --- |
| Price | $9.99 | **$2.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 17 months |
| Size | 275 MB | 30 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Learning Fundamentals, Inc.](https://appshunter.io/developer/454061076) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Articulation IV

[App page](https://appshunter.io/ios/app/articulation-iv/id515128379)

**Features:** macOS Compatibility

**In-app purchases:** none


### Reading Skills 4A

[App page](https://appshunter.io/ios/app/reading-skills-4a/id545807900)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Articulation IV free?

Articulation IV costs $9.99, with no in-app purchases.

### Is Reading Skills 4A free?

Reading Skills 4A costs $2.99, with no in-app purchases.

### Do Articulation IV or Reading Skills 4A have ads?

Neither Articulation IV nor Reading Skills 4A shows ads.

### Which is updated more often, Articulation IV or Reading Skills 4A?

Articulation IV ships an update every 9 months, and Reading Skills 4A every 17 months. Most recently, Articulation IV was updated on October 26, 2026 and Reading Skills 4A on October 26, 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.*