Cimo Spelling (Sight Words) vs Big Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cimo Spelling (Sight Words)
This educational game helps kindergarten through 3rd graders build a strong foundation in reading and spelling. Children learn high-frequency and sight words through an engaging penguin-themed adventure. Parents can track progress with detailed reports and customize learning levels.
- Teaches Dolch Sight Word list
- Interactive penguin-themed gameplay
- Progress reports for parents
- Customizable question settings
- Grade-appropriate learning levels
- Professional voice recordings
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This is a great app for kindergarten through 3rd grade children. It teaches a combination of high frequency and sight words (from the Dolch Sight Word list). The list of 255 words was selected to cover words that a child encounters most often when learning to read (high frequency), including words that cannot be learned using pictures (sight words). Learning to spell these words adds to a strong foundation in reading and spelling for beginning readers. In this game, your child will help Cimo the penguin reach an iceberg to catch fish. Each correct letter chosen adds a block to his bridge. Finish the word and Cimo can cross, but watch out for wrong letters, or Cimo will take a dip! This is the fun game to improve your child's spelling abilities. Also included is a progress report for parents. The report allows them to track their child’s performance in spelling the sight and high frequency words, and provides play history with game details (i.e, On this date, your child has played level 1 and level 2 and in each game, what item has been asked and what your child has answered). An additional setup option allows for a parent or teacher to customize the number of questions to match their child. **In this new version, we add the options for self-correction (i.e, kids could correct their answer in the second try) and clearing out all the reports. This game will help your child improve their reading skills in a fun and interactive environment. Features This app is divided into 6 total levels to help children practice sight words in grade appropriate levels (Kindergarten, 1st, 2nd, or 3rd grade), with one additional level for high freqency words. The final challenge level mixes all the words together and adds incorrect letter options to increase difficulty. **All words have been recorded by professional voice talent. *** If you have any questions or problems related to our app, please email us at playsmart.kids@gmail.com. We are willing to assist you.
Big Math
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Big Math is an iPad app for elementary school children to practice addition, subtraction, multiplication and division of big numbers. It has both portrait and landscape orientation. It has a dolphin theme, and when the child has finished a set of problems, a dolphin sound (whistle, scream, yell or motorbike) is heard. The child starts by picking what he or she wants to work on in the Settings screen of the app. Settings options include: * Entering a name and message for the child who will be using the app. The name and message show up throughout the app. * Entering the options for addition, subtraction, multiplication, and/or division. For addition, the child can add 2 numbers, either 2 digit or 3 digit, or 3 numbers, either 2 digit or 3 digit. For subtraction, the child can subtract either 2 digit or 3 digit numbers. For multiplication, the child can multiply 2 digit or three digit numbers. For division (long division), the child can divide with a 1 digit, 2 digit, or 3 digit divisor. The app allows regrouping, where the child can "carry" in addition, multiplication, and division or "borrow" in subtraction and division. The child can elect to have problem sets timed. Once the settings are set, the child goes to the area he or she wants to practice (Big Add, Big Subtract, Big Multiply, or Big Divide), selects the number of problems to do, and starts doing Big Math! Dolphin sounds are courtesy of Dolphin Encounters in the Bahamas! Try it and enjoy!
Screenshots
Verdict
The clearest difference is update cadence: Cimo Spelling (Sight Words) at every 2 months against Big Math's every 11 months. Cimo Spelling (Sight Words) also leads on device support (3 vs 1) and iOS requirement (9.0 vs 15.6). On price, ads and in-app purchases 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
Cimo Spelling (Sight Words) costs $1.99 and Big Math $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Cimo Spelling (Sight Words) ships an update every 2 months, Big Math every 11 months. The most recent releases landed on October 18, 2026 and October 19, 2026 respectively.
| Parameter | Cimo Spelling (Sight Words) | Big Math |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 3.3 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 142 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Jariya Tuantranont | Eaglet LLC |
In-app purchases
Cimo Spelling (Sight Words)
No in-app purchases
Big Math
No in-app purchases
Questions
Is Cimo Spelling (Sight Words) free?
Is Big Math free?
Do Cimo Spelling (Sight Words) or Big Math have ads?
Which is updated more often, Cimo Spelling (Sight Words) or Big Math?
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