Comparison

SymphonyMath vs Co

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

Head to head
About

SymphonyMath

This app provides a conceptual approach to learning mathematics, helping students understand fundamentals rather than relying on memorization. It supports students at their own pace, building a strong foundation for advanced subjects and fostering confidence.

Highlights
  • Conceptual understanding of math
  • Self-paced learning
  • Built-in student assessments
  • Identifies at-risk students
  • Tracks student growth
  • Supports diverse learning styles
Features
Read full description

*** Full use of this app requires an active account for Symphony Math®. If you do not have account information, please contact your school for more information. *** A SIMPLE SOLUTION TO A DIFFICULT PROBLEM Many students struggle with math because they rely on arbitrary memorization techniques to answer specific questions. With this approach, students do not gain a substantive understanding of fundamentals and simply cannot adjust to more sophisticated problem solving. With Symphony Math®, these problems are resolved. Symphony Math® helps students understand mathematics at a conceptual level. Instead of being overwhelmed by numbers, students move at their own speed and learn how math works. Through every stage of Symphony Math®, students gain a strong foundation in underlying principles and become better equipped to take on basic and advanced subjects. Going far beyond rote math drills and practice tests, this special teaching solution illuminates the core of learning and produces confident, more capable students. BUILT IN ASSESSMENT Students take a Fall, Winter, and Spring assessment that quickly identifies at-risk students and helps track growth. A ROBUST INTERVENTION THAT SUPPORTS STUDENTS WHO NEED HELP IN MATH The best practices in developmental psychology and cognitive science are the cornerstones of Symphony Math®. Our uniquely designed delivery methods ensure that students – regardless of learning styles or knowledge levels – fully grasp fundamental mathematical ideas, even for difficult-to-explain and abstract concepts. The result is a solid foundation for acquiring higher math skills, as well as a positive learning experience.

About

Co

This app provides advanced word prediction and spelling support for students. It offers grammar-smart suggestions and access to millions of topic-specific dictionaries to aid in writing. Built-in text-to-speech functionality helps users review their work.

Highlights
  • Grammar-smart word prediction
  • Millions of topic-specific dictionaries
  • Flexspell™ technology for spelling errors
  • Built-in text-to-speech
  • Personalized vocabulary and settings
Features
Read full description

Co:Writer® Universal app and third-party keyboard gives students easy access to word prediction on iPad, iPad Pro, iPhone, and iPod Touch. Students simply sign in to their Co:Writer Universal accounts to write with their personal settings and vocabulary. ABOUT CO:WRITER UNIVERSAL This version is for schools with a Co:Writer Universal license only. Users without a Co:Writer Universal license must purchase the Co:Writer app. HOW DOES CO:WRITER WORK? As letters are typed, Co:Writer predicts the intended word with a selection of word suggestions using powerful grammar-smart word prediction. These suggestions can be read aloud with a swipe. Selecting the intended word places it into the writing document. For feedback while writing (and after writing) built-in text to speech can be used to read letters, words, sentences, and the entire document. 4+ MILLION TOPIC-SPECIFIC DICTIONARIES Co:Writer has access to a main prediction dictionary (that includes core words) and Topic Dictionaries (that includes topic specific words). Co:Writer can access over 4 million topic-specific dictionaries which are activated based on the writing task. A small sampling of the variety of topic dictionaries: - America's Cup - Apple II - Compare and Contrast - Dinosaurs - Grumpy Cat - History of the Peloponnesian War - Mahatma Gandhi - My Dog - Pig Latin - Rolls-Royce Silver Ghost - SpongeBob SquarePants - Tommy (album) - Wonders of the World SPELLING SUPPORT Co:Writer handles the widest range of spelling mistakes through its Flexspell™technology including phonetic spelling and inventive spelling errors (letter omissions, word ending omissions, letter reversals, etc). Examples of how Co:Writer aides with phonetic and/or inventive spelling: Before Co:Writer The blk jargon flu over the bra lfnt. R u hpy to ce me? I no hw to nor the fone. After Co:Writer The black dragon flew over the gray elephant. Are you happy to see me? I know how to answer the phone. GRAMMAR SUPPORT Co:Writer bases its prediction off of proper grammar, and uses its understanding of grammar to accurately predict words within the framework of valid sentence structures. Examples of how Co:Writer aides with grammar: Dogs are furry. (noun, verb, adj.) - When you typed d-o, you get plural noun choices Three very mangy dogs ran down the street. (adj., adv., adj., noun, verb… etc.) - After typing three, very, mangy, you get plural noun choices, then you get plural verb tenses. OTHER FEATURES - Built-in Text to Speech - Export

Screenshots

SymphonyMath1 screens
Co4 screens

Verdict

The call

The clearest difference is rating: SymphonyMath at 4.3 against Co's 2.6. SymphonyMath also leads on review sentiment (48% vs 8%) and update cadence (monthly vs every 4 months). On price, ads, in-app purchases and monetization model 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

SymphonyMath holds the better App Store score, 4.3 against 2.6. That said, the two scores are not equally well evidenced: SymphonyMath has 505 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 48% of SymphonyMath's written reviews are positive against 8% of Co's.

UpkeepUpdate frequency

SymphonyMath ships an update monthly, Co every 4 months. Both last shipped on October 29, 2026.

Scorecard4 real differences · 6 level
SymphonyMath versus Co: the parameters behind the verdict, then further details
ParameterSymphonyMathCo
PriceFreeFree
Rating4.3 (505 ratings) — better2.6 (17 ratings)
Positive reviews48.0% of reviews — better8.3% of reviews
Number of ratings505 — better17
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.010.0 — better
Further details — not scored
Size16 MB45 MB
Age rating4+4+
DeveloperSymphony LearningDon Johnston Incorporated

Customer experience

SymphonyMath

All ratings501 ratings
Positive81.6%
Neutral6.2%
Negative12.2%
Written reviews25 reviews
Positive48.0%
Neutral12.0%
Negative40.0%

Co

All ratings17 ratings
Positive29.4%
Neutral23.5%
Negative47.1%
Written reviews12 reviews
Positive8.3%
Neutral16.7%
Negative75.0%

Bugs and requests

SymphonyMath

Reported bugs

6 issues
  • App says correct answer is wrong
  • No sound
  • Crashes when palm touches screen
  • Loses progress for session
  • Launches with sound muted
Show 1 more
  • Requires going to settings to unmute

Requested features

6 requests
  • Make it funnier
  • Incorporate Subway Surfers with math facts
  • Add timed math challenges (1 min or 30 sec)
  • Remember students for home use
  • Allow users to work whenever they want
Show 1 more
  • Improve user interface for home users

Co

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SymphonyMath

No in-app purchases

None

Co

No in-app purchases

Questions

Is SymphonyMath free?
SymphonyMath is free to download, with no in-app purchases.
Is Co free?
Co is free to download, with no in-app purchases.
Which has better reviews, SymphonyMath or Co?
SymphonyMath is rated higher. SymphonyMath averages 4.3 out of 5 from 505 ratings, while Co averages 2.6 from 17 ratings.
Do SymphonyMath or Co have ads?
Neither SymphonyMath nor Co shows ads.
Which is updated more often, SymphonyMath or Co?
SymphonyMath ships an update monthly, and Co every 4 months. Most recently, SymphonyMath was updated on October 29, 2026 and Co on October 29, 2026.

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