Comparison

Stack Up vs RoboKind Companion

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stack Up

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
Read full description

- Full version. - No in-app purchases. - No ads. - Safe for kids. Welcome to “Stack Up”. This educational app is designed for children aged 2.5 and above. Here children can learn to arrange items bottom-up according to their width. It is fun, and it helps them develop visual perception skills, and primary math concepts. STEP BY STEP is a professional EdTech studio that focuses on developing educational apps for children aged 1 to 5 years old. During these critical years, children enter a new learning stage every few months. Our apps support and strengthen the development of crucial skills for each learning stage. This way we guide your children, step by step, throughout this entire age range. Our key values are perfection and simplicity. We believe that small details make a big difference, so we give great attention to every detail — both in content and design. Most importantly, we keep our apps simple — simple to understand and simple to use. While playing our games, children will engage in simple activities, such as matching, pairing, ordering, grouping, and sorting. This allows them to practice essential skills, such as: categorization, conceptualization, generalization, abstraction, memory, language, math, visual perception, fine motor, accuracy, attention, and focus. They will learn about shapes, colors, animals, fruit, vegetables, clothing, tools, vehicles, furniture, professions, toys, etc., — all while playing. The levels are generally arranged by difficulty. The first levels are usually quite simple — their main objective is to teach players critical thinking and problem solving. However, the exercises become increasingly challenging as the child advances within the game. Our applications avoid distractions such as popups, unnecessary animation, and noisy feedback. We keep our applications safe for children — no advertisements, no unsafe links to external content, no popups, etc. Furthermore, our experience indicates that our apps can be very helpful for children with special-needs¹, and that they can function as useful tools in both speech-language therapy² and in occupational therapy³. In addition, our apps have been found useful for adults with disabilities or dementia⁴. For this reason, we added two important features: the first one was designed for teachers, therapists, and speech pathologists, which allows them to track the progress of their students; the second feature makes our apps also accessible for users with disabilities, and on this matter we would like to thank the Technology Consulting Center at “Beit Issie Shapiro”⁵ for their professional guidance and consultation regarding accessibility. ________ ¹ Special needs - Learning difficulties due to learning disabilities, communication disabilities, emotional or behavioural disorders, physical disabilities and/or developmental disabilities, which may be caused by Autism (Autistic Spectrum Disorders), Down Syndrome, Dyslexia, Tourette Syndrome, etc. ² Speech-language therapy - Treatment of communication disorders by speech-language pathologists (SLP). ³ Occupational therapy (OT) - Treatment meant to develop, recover, or maintain daily living and work skills for people with a physical, mental or developmental condition. ⁴ Dementia -  A condition caused by brain injury (BI), brain damage or brain diseases, such as Alzheimer’s, Lewy bodies (DLB), Vascular dementia, etc. ⁵ "Beit Issie Shapiro" is a leading non-profit organization that develops therapies for people with disabilities, and also acts as a ‘Special Consultant’ to the United Nations.

About

RoboKind Companion

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
Read full description

RoboKind Companion is the essential app for the RoboKind's Social Skills and Phonics programs. Both programs are endorsed by CASE (Council of Administrators of Special Education) and validated by independent research The Social Skills program is designed to teach social, emotional, and behavioral skills and contains: 140+ Robot-Led Lessons: Covering self-regulation, social communication, emotional recognition, and situational practice. Tailored Experience: Assign pre-defined IEP goals to students for personalized learning. Features include speed preferences, mood tracking, and enhanced note-taking. Flexible Learning Environment: Facilitate lessons individually, in groups, or remotely using the virtual avatar. The Phonics Program is an early childhood reading program which adheres to Science of Reading and I-VAKT practices. Explore our latest addition at www.robokind.com/phonics. The RoboKind curriculum has been proven effective through statewide studies and has been used in thousands of classrooms nationally and internationally. Requirements: RoboKind subscription, two iPads (5th generation or later), and a RoboKind R25 Robot and/or Avatar license. With RoboKind Web Companion, an iPad can be substituted using a computer with Chrome or Edge browsers. For more information, visit www.robokind.com.

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Stack Up versus RoboKind Companion: the parameters behind the verdict, then further details
ParameterStack UpRoboKind Companion
PriceFreeFree
Rating5.0 (6 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings6 — better2
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPad
Requires iOS7.0 — better12.0
Further details — not scored
Size65 MB600 MB
Age rating4+4+
DeveloperSTEP BY STEPRobokind LLC

Customer experience

Stack Up

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RoboKind Companion

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stack Up

No in-app purchases

None

RoboKind Companion

No in-app purchases

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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