# GeoFormulas by ChatStick vs Articulation Lab

The clearest difference is ads: Articulation Lab at none against GeoFormulas by ChatStick's shown. Articulation Lab also leads on update cadence (monthly vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. GeoFormulas by ChatStick sells 1 one-off in-app purchase and Articulation Lab sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

GeoFormulas by ChatStick ships an update every 7 months, Articulation Lab monthly. The most recent releases landed on October 18, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GeoFormulas by ChatStick | Articulation Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/articulation-lab/id6788096792/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | — | Freemium |
| Size | 8 MB | 247 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) | [GULCE TUZUNER](https://appshunter.io/developer/1883545096) |

## What reviewers say

### GeoFormulas by ChatStick

[App page](https://appshunter.io/ios/app/geoformulas-by-chatstick/id6751835608)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Feature | $2.99 | one-time |


### Articulation Lab

[App page](https://appshunter.io/ios/app/articulation-lab/id6788096792)

This app helps children improve their speech clarity through engaging games and practice activities. It targets specific speech sounds at various levels, from single sounds to reading passages, with progress tracking and rewards.

**Highlights:** Speech sound practice, Interactive games, Progress tracking, Reward system, Multiple profile support, Reading activities

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Articulation Lab Plus Monthly | $4.99 | per month |
| Articulation Lab Plus Yearly | $34.99 | per year |


## Frequently asked questions

### Is GeoFormulas by ChatStick free?

GeoFormulas by ChatStick is free to download, with in-app purchases available.

### Is Articulation Lab free?

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

### Do GeoFormulas by ChatStick or Articulation Lab have ads?

GeoFormulas by ChatStick shows ads; Articulation Lab does not.

### Which is updated more often, GeoFormulas by ChatStick or Articulation Lab?

GeoFormulas by ChatStick ships an update every 7 months, and Articulation Lab monthly. Most recently, GeoFormulas by ChatStick was updated on October 18, 2026 and Articulation Lab on October 28, 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.*