Comparison

Big or Small 2 vs Kindergarten Math

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

Head to head
About

Big or Small 2

This app helps young children, particularly those with language delays, learn fundamental concepts like size, quantity, and numbers through interactive play. It's designed to support early language development and comprehension using visuals and audio prompts.

Highlights
  • Teaches big, small, quantity, numbers, and position
  • Uses visuals and audio prompts for comprehension
  • Reinforcement based on ABA principles
  • Friendly interface for toddlers and preschoolers
  • Supports native language instructions
  • Includes letters A-Z and numbers 1-20
Features
Read full description

Is your child understanding key developmental concepts like “big” and “small”? Big or Small 2 is a compact, structured learning tool designed for young children—especially those with language delays—to explore foundational ideas like size, quantity, and numbers through playful interaction. At around 30 months, many children begin to grasp basic language and spatial concepts. This app helps you determine if your child is on track—and helps them move forward confidently. Key Features • Learn concepts like big, small, quantity, numbers, and position • Encourages comprehension through visuals and audio prompts • Reinforcement built on the principles of Applied Behavior Analysis (ABA) • Friendly interface for toddlers and preschoolers • Use your native language to communicate instructions • Includes uppercase and lowercase letters A–Z, and numbers 1–20 Built for Parents & Professionals Big or Small 2 is designed for families, speech therapists, and educators to support early language screening and enrichment. Even if English isn’t your first language, the app’s structure allows flexible use with translation by a parent or educator. Multilingual-Friendly Translate instructions in real-time and focus on core concepts. The app is also a great introduction to English letters and numbers for bilingual children. Developmental Note By 30 months, children typically begin to understand contrasts in size, quantity, and space. However, every child develops at their own pace. If you have concerns about your child’s language development, consult a healthcare or educational professional. We’d love your feedback. Have suggestions or questions? Reach out to us via the support link in the app.

About

Kindergarten Math

This app offers a fun and engaging way for kindergarteners to learn essential math skills. It features interactive mini-games and challenges designed to cover a full school year's curriculum, with progress tracking for parents.

Highlights
  • Covers full kindergarten math curriculum
  • Interactive mini-games and challenges
  • Rote counting to 40
  • Number writing and recognition
  • Object counting and comparison
  • Parent Dashboard for progress tracking
  • In-game currency for gear customization
Read full description

The fun in learning is here! Our Kindergarten Math Series is one of the best kids math games your child can ever play. Introducing Saba’s Island! The first app in iO School’s Kindergarten Math Series! Aimed to provide an enjoyable learning experience, the six kindergarten math apps are designed to match your child's lessons for the entire school year. It’s a complete kindergarten Math Curriculum for your 5 year old. Whether it’s to practice or hone your child’s math skills, the Kindergarten Math Series is a perfect program to supplement your child’s learning at school and at home. The schedule below shows the time frame for playing the Kindergarten Math Series: Saba’s Island (Saba the monkey) - Month 1 to 2 Mari’s Kitchen (Mari the bear) - Month 2 to 4 Pat’s Voyage (Pat the parrot) - Month 4 to 5 Joe’s Jungle (Joe the squirrel) - Month 6 to 7 Pearl’s Pizza (Pearl the cat) - Month 8 to 9 Clifton’s Cruise (Clifton the dog) - Month 9 to 10 Playing each app ahead of schedule is entirely up to the parents. They can also go back a month or two to review the skills that they have previously learned at school. Parents who have preschool age children (4 years old) can introduce their child to the Kindergarten Math curriculum by playing the Kindergarten Math Series. Skills Covered by Saba’s Island: Rote counting to 40 Writing numbers 0 to 10 Recognizing numbers 0 to 10 Ordering numbers from smallest to largest 0 to 5 Ordering numbers from largest to smallest 5 to 0 Counting objects in lines or array 0 to 10 Comparing objects and numbers 0 to 10 Counting objects on a 10-frame Counting numbers 0 to 10 Counting objects with one more 0 to 5 Counting objects with one less 0 to 5 Compare numbers greater than, less than and equal to 1 to 10 Graphing numbers 0 to 10 Whether it's counting coconuts, watermelons or writing numbers, Saba needs to complete the task from each NPC (non-playable character) to be able to move to the next level. Each level starts with skills practices in every mini game and lets players earn ions that they can use to buy different kinds of gear from the shop. At the end of each level, they will complete challenge activities that get recorded on the Parent Dashboard. Track your child’s progress using the Parent Dashboard Parents can create a free account at https://app.ioschool.com or on the app itself. They will be able to see what skills their child worked on and how they did on the assessments. Each session is recorded by the date. Parents can determine if their child is progressing or will need additional support and practice. Privacy Policy https://ioschool.com/privacy-policy/ Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact Us We would love to hear from you https://ioschool.com/get-in-touch/ support@ioschool.com https://www.facebook.com/ioschoolinc https://twitter.com/ioschoolinc

Screenshots

Big or Small 24 screens
Kindergarten Math4 screens

Verdict

The call

The clearest difference is review sentiment: Kindergarten Math at 100% against Big or Small 2's 0%. Kindergarten Math also leads on price (Free vs $4.99) and rating (5.0 vs 2.3). Big or Small 2's advantage is in-app purchases (none vs 2) and ads (none vs shown). On ratings volume and device support 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

Kindergarten Math is free to download; Big or Small 2 costs $4.99 up front. Kindergarten Math sells 2 in-app purchases, starting at $2.99 per month. Big or Small 2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kindergarten Math holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 0% of Big or Small 2's written reviews are positive against 100% of Kindergarten Math's.

UpkeepUpdate frequency

Big or Small 2 ships an update every 8 months, Kindergarten Math monthly. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

Scorecard8 real differences · 2 level
Big or Small 2 versus Kindergarten Math: the parameters behind the verdict, then further details
ParameterBig or Small 2Kindergarten Math
Price$4.99Free — better
Rating2.3 (3 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings33
Update frequencyEvery 8 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.111.0 — better
Further details — not scored
Size25 MB362 MB
Age rating4+4+
DeveloperAME Mobile Inc.iO School, Inc.

Customer experience

Big or Small 2

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Kindergarten Math

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Big or Small 2

No in-app purchases

2 purchases

Kindergarten Math

Subscriptions2
  • Full Access - Monthly3 Days trial$2.991 Month
  • Full Access - Annual3 Days trial$24.991 Year

Questions

Is Big or Small 2 free?
Big or Small 2 costs $4.99, with no in-app purchases.
Is Kindergarten Math free?
Kindergarten Math is free to download, with in-app purchases available.
Which has better reviews, Big or Small 2 or Kindergarten Math?
Kindergarten Math is rated higher. Big or Small 2 averages 2.3 out of 5 from 3 ratings, while Kindergarten Math averages 5.0 from 3 ratings.
Do Big or Small 2 or Kindergarten Math have ads?
Kindergarten Math shows ads; Big or Small 2 does not.
Which is updated more often, Big or Small 2 or Kindergarten Math?
Big or Small 2 ships an update every 8 months, and Kindergarten Math monthly. Most recently, Big or Small 2 was updated on October 23, 2026 and Kindergarten Math on October 8, 2026.

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