# Stack Up vs RoboKind Companion

The clearest difference is ratings volume: Stack Up at 6 against RoboKind Companion's 2. Stack Up also leads on iOS requirement (7.0 vs 12.0). On price, rating, review sentiment and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Stack Up against 5.0 for RoboKind Companion. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Stack Up ships an update every 2 months, RoboKind Companion monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Stack Up | RoboKind Companion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/stack-up-stack-items-bottom-up-to-build-a-tower/id1135865797/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/robokind-companion/id1475146018/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 65 MB | 600 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [STEP BY STEP](https://appshunter.io/developer/961412234) | [Robokind LLC](https://appshunter.io/developer/952090931) |

## What reviewers say

### 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


### RoboKind Companion

[App page](https://appshunter.io/ios/app/robokind-companion/id1475146018)

This app supports educational programs focused on social skills and early childhood reading. It offers robot-led lessons, personalized learning paths, and flexible learning environments for individual or group instruction.

**Highlights:** Robot-led social skills lessons, Personalized IEP goal assignment, Mood tracking and speed preferences, Virtual avatar for remote learning, Science of Reading phonics program, Individual, group, or remote lessons

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stack Up free?

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

### Is RoboKind Companion free?

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

### Which has better reviews, Stack Up or RoboKind Companion?

Stack Up and RoboKind Companion are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.

### Do Stack Up or RoboKind Companion have ads?

Neither Stack Up nor RoboKind Companion shows ads.

### Which is updated more often, Stack Up or RoboKind Companion?

Stack Up ships an update every 2 months, and RoboKind Companion monthly. Most recently, Stack Up was updated on November 6, 2026 and RoboKind Companion on November 3, 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.*