Comparison

Hello Crayons vs Co

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

Head to head
About

Hello Crayons

This app offers a fun and easy drawing experience for children, featuring realistic crayon and marker pen simulations. It includes cool drawing sounds and an intuitive interface, with free coloring sketches available.

Highlights
  • Realistic crayon and marker pen simulation
  • Cool drawing sound effects
  • Intuitive user interface
  • Free coloring sketches
  • Part of a drawing series
Features
Read full description

Hello crayon is an easy & fun drawing APP for children. It provides realistic crayons and marker pens. Features - Realistic look & feel of crayons and marker pens - Cool drawing sound - Intuitive user interface - Free 8 coloring sketches for coloring Check out our hello drawing series. - Hello Crayons - Hello Color pencils - Hello Chalk Facebook http://www.facebook.com/pages/Hello-Crayon/128107603937551

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

Hello Crayons4 screens
Co4 screens

Verdict

The call

The clearest difference is review sentiment: Hello Crayons at 82% against Co's 8%. Hello Crayons also leads on rating (4.0 vs 2.6) and update cadence (every 6 weeks vs every 4 months). Co's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement 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. Hello Crayons sells 10 one-off in-app purchases. Co asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Hello Crayons holds the better App Store score, 4.0 against 2.6. Both are backed by a comparable volume of ratings — 68 and 17 respectively. Written reviews point the same way: 82% of Hello Crayons's written reviews are positive against 8% of Co's.

UpkeepUpdate frequency

Hello Crayons ships an update every 6 weeks, Co every 4 months. Both last shipped on November 1, 2026.

Scorecard6 real differences · 4 level
Hello Crayons versus Co: the parameters behind the verdict, then further details
ParameterHello CrayonsCo
PriceFreeFree
Rating4.0 (68 ratings) — better2.6 (17 ratings)
Positive reviews81.6% of reviews — better8.3% of reviews
Number of ratings68 — better17
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better10.0
Further details — not scored
Size84 MB45 MB
Age rating4+4+
DeveloperRaysoft.coDon Johnston Incorporated

Customer experience

Hello Crayons

All ratings58 ratings
Positive70.7%
Neutral10.3%
Negative19.0%
Written reviews283 reviews
Positive81.6%
Neutral7.4%
Negative11.0%

Co

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

Bugs and requests

Hello Crayons

Reported bugs

10 issues
  • App crashes on startup or during use
  • Blank white screen after loading
  • Pictures not saving to camera roll despite showing saved
  • Coloring books disappear after app update
  • Purchased extras lost after updates
Show 5 more
  • App freezes when accessing store or in-app purchases
  • Facebook sharing integration causes crashes
  • Email function occasionally crashes app
  • Crashes when opening coloring book section
  • Incompatibility with iPad 2 after updates

Requested features

10 requests
  • Zoom in and out capability
  • Multiple crayon/marker tip sizes
  • More colors and drawing tools
  • Import and trace pictures feature
  • More coloring book pages
Show 5 more
  • Music playback while using app
  • Highlighters and pencils options
  • Paint and watercolor tools
  • Ability to color inside the lines education mode
  • Wider color palette

Co

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Hello Crayons

One-time10
  • 32 color crayons$0.99
  • 32 color marker pens$0.99
  • Coloring book #1$0.99
Show 7 more
  • Coloring Book #2$0.99
  • Coloring Book #3$0.99
  • Coloring Book #4$0.99
  • Flood Fills & Brush Pens$0.99
  • crayon_cbook5$0.99
  • crayon_cbook6$0.99
  • crayon_cbook7$0.99
None

Co

No in-app purchases

Questions

Is Hello Crayons free?
Hello Crayons is free to download, with in-app purchases available.
Is Co free?
Co is free to download, with no in-app purchases.
Which has better reviews, Hello Crayons or Co?
Hello Crayons is rated higher. Hello Crayons averages 4.0 out of 5 from 68 ratings, while Co averages 2.6 from 17 ratings.
Do Hello Crayons or Co have ads?
Neither Hello Crayons nor Co shows ads.
Which is updated more often, Hello Crayons or Co?
Hello Crayons ships an update every 6 weeks, and Co every 4 months. Most recently, Hello Crayons was updated on November 1, 2026 and Co on November 1, 2026.

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