Comparison

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.

Head to head
About

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.

Highlights
  • Teaches Dolch Sight Word list
  • Interactive penguin-themed gameplay
  • Progress reports for parents
  • Customizable question settings
  • Grade-appropriate learning levels
  • Professional voice recordings
Features
Read full description

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.

About

Big Math

Features
Read full description

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

Cimo Spelling (Sight Words)4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Cimo Spelling (Sight Words) versus Big Math: the parameters behind the verdict, then further details
ParameterCimo Spelling (Sight Words)Big Math
Price$1.99$1.99
Rating3.3 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 months — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS9.0 — better15.6
Further details — not scored
Size142 MB18 MB
Age rating4+4+
DeveloperJariya TuantranontEaglet LLC

In-app purchases

None

Cimo Spelling (Sight Words)

No in-app purchases

None

Big Math

No in-app purchases

Questions

Is Cimo Spelling (Sight Words) free?
Cimo Spelling (Sight Words) costs $1.99, with no in-app purchases.
Is Big Math free?
Big Math costs $1.99, with no in-app purchases.
Do Cimo Spelling (Sight Words) or Big Math have ads?
Neither Cimo Spelling (Sight Words) nor Big Math shows ads.
Which is updated more often, Cimo Spelling (Sight Words) or Big Math?
Cimo Spelling (Sight Words) ships an update every 2 months, and Big Math every 11 months. Most recently, Cimo Spelling (Sight Words) was updated on October 18, 2026 and Big Math on October 19, 2026.

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