# SpeakColors vs Stack Up

The clearest difference is rating: Stack Up at 5.0 against SpeakColors's 2.5. Stack Up also leads on in-app purchases (none vs 1) and review sentiment (100% vs 67%). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. SpeakColors sells 1 one-off in-app purchase. Stack Up asks for nothing beyond the download.

Stack Up holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 4 and 6 respectively. Written reviews point the same way: 67% of SpeakColors's written reviews are positive against 100% of Stack Up's.

SpeakColors ships an update every 16 months, Stack Up every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SpeakColors | Stack Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/speakcolors/id459123512/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/stack-up-stack-items-bottom-up-to-build-a-tower/id1135865797/reviews)** |
| Number of ratings | 4 | **6** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 65 MB |
| Requires iOS | 17.6 | **7.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [RWH Technology, LLC](https://appshunter.io/developer/459123515) | [STEP BY STEP](https://appshunter.io/developer/961412234) |

## What reviewers say

### SpeakColors

[App page](https://appshunter.io/ios/app/speakcolors/id459123512)

This iPad app helps young children with speech and language delays practice using two-word phrases with colors and objects. It features colorful photos and allows voice recording to build vocabulary and language skills.

**Highlights:** Two-word phrase practice, Color and object vocabulary, Voice recording, Interactive photos, Progressive language skills

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $3.99 | one-time |


### Stack Up

[App page](https://appshunter.io/ios/app/stack-up-stack-items-bottom-up-to-build-a-tower/id1135865797)

This educational app helps children aged 2.5 and up learn to arrange items by width. It fosters visual perception and primary math skills through engaging, simple activities. Designed for young learners, it avoids distractions and offers progress tracking for educators.

**Highlights:** Arranging items by width, Develops visual perception, Teaches primary math concepts, Progress tracking for educators, Safe for children, Simple and intuitive design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpeakColors free?

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

### Is Stack Up free?

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

### Which has better reviews, SpeakColors or Stack Up?

Stack Up is rated higher. SpeakColors averages 2.5 out of 5 from 4 ratings, while Stack Up averages 5.0 from 6 ratings.

### Do SpeakColors or Stack Up have ads?

Neither SpeakColors nor Stack Up shows ads.

### Which is updated more often, SpeakColors or Stack Up?

SpeakColors ships an update every 16 months, and Stack Up every 2 months. Most recently, SpeakColors was updated on November 1, 2026 and Stack Up on November 6, 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.*