Co vs Blocks4All
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Grammar-smart word prediction
- Millions of topic-specific dictionaries
- Flexspell™ technology for spelling errors
- Built-in text-to-speech
- Personalized vocabulary and settings
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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
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.
- Block-based programming
- VoiceOver compatibility
- Switch Control support
- Dash and Dot robot programming
- Educational tool
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Co ships an update every 4 months, Blocks4All every 6 months. Both last shipped on October 29, 2026.
| Parameter | Co | Blocks4All |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (17 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 8.3% of reviews | — |
| Number of ratings | 17 — better | 1 |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 45 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Don Johnston Incorporated | Lauren Milne |
Customer experience
Co
Blocks4All
In-app purchases
Co
No in-app purchases
Blocks4All
No in-app purchases









