Comparison

Co vs Blocks4All

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

Head to head
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

About

Blocks4All

This app provides a block-based programming interface designed for accessibility. It is compatible with VoiceOver and Switch Control, allowing users to program robots. Ideal for educational settings.

Highlights
  • Block-based programming
  • VoiceOver compatibility
  • Switch Control support
  • Dash and Dot robot programming
  • Educational tool
Features
Read full description

BlocksForAll is a block-based programming environment that works with VoiceOver and Switch Control. It can be used to program the Dash and Dot robots from Wonder Workshop.

Screenshots

Co4 screens

Verdict

The call

The clearest difference is rating: Blocks4All at 5.0 against Co's 2.6. Co's advantage is ratings volume (17 vs 1) and device support (3 vs 1). On price, update cadence, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Blocks4All holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Co has 17 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Co ships an update every 4 months, Blocks4All every 6 months. Both last shipped on October 29, 2026.

Scorecard4 real differences · 6 level
Co versus Blocks4All: the parameters behind the verdict, then further details
ParameterCoBlocks4All
PriceFreeFree
Rating2.6 (17 ratings)5.0 (1 ratings) — better
Positive reviews8.3% of reviews—
Number of ratings17 — better1
Update frequencyEvery 4 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS10.0 — better12.0
Further details — not scored
Size45 MB70 MB
Age rating4+4+
DeveloperDon Johnston IncorporatedLauren Milne

Customer experience

Co

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

Blocks4All

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Co

No in-app purchases

None

Blocks4All

No in-app purchases

Questions

Is Co free?
Co is free to download, with no in-app purchases.
Is Blocks4All free?
Blocks4All is free to download, with no in-app purchases.
Which has better reviews, Co or Blocks4All?
Blocks4All is rated higher. Co averages 2.6 out of 5 from 17 ratings, while Blocks4All averages 5.0 from 1 ratings.
Do Co or Blocks4All have ads?
Neither Co nor Blocks4All shows ads.
Which is updated more often, Co or Blocks4All?
Co ships an update every 4 months, and Blocks4All every 6 months. Most recently, Co was updated on October 29, 2026 and Blocks4All on October 29, 2026.

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