Comparison

Co vs Relay Smart Agent

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

Relay Smart Agent

This application offers web filtering and safety features for iOS devices, ensuring CIPA compliance for schools. It provides on and off-campus protection and reports on student activity, acting as a hardware-free cloud solution.

Highlights
  • CIPA compliant web filtering
  • On/off campus safety
  • Student activity reporting
  • Hardware-free cloud solution
  • Anytime, anywhere filtering
Read full description

This app provides anytime, anywhere filtering, safety, and reporting on iOS devices for schools using the Relay web filter from Lightspeed Systems. With the Relay Smart Agent for iOS, schools get: CIPA compliant web filtering On/off campus safety Reporting on student activity A hardware-free cloud solution And more!

Screenshots

Co4 screens
Relay Smart Agent1 screens

Verdict

The call

The clearest difference is rating: Co at 2.6 against Relay Smart Agent's 1.2. Co also leads on review sentiment (8% vs 0%) and iOS requirement (10.0 vs 15.0). Relay Smart Agent's advantage is update cadence (every 2 months vs every 4 months). On price, ratings volume, 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

Co holds the better App Store score, 2.6 against 1.2. Both are backed by a comparable volume of ratings — 17 and 33 respectively. Written reviews point the same way: 8% of Co's written reviews are positive against 0% of Relay Smart Agent's.

UpkeepUpdate frequency

Co ships an update every 4 months, Relay Smart Agent every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
Co versus Relay Smart Agent: the parameters behind the verdict, then further details
ParameterCoRelay Smart Agent
PriceFreeFree
Rating2.6 (17 ratings) — better1.2 (33 ratings)
Positive reviews8.3% of reviews — better0.0% of reviews
Number of ratings1733 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size45 MB9 MB
Age rating4+4+
DeveloperDon Johnston IncorporatedLightspeed Solutions, LLC

Customer experience

Co

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

Relay Smart Agent

All ratings32 ratings
Positive6.3%
Neutral0.0%
Negative93.8%
Written reviews11 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Co

No in-app purchases

None

Relay Smart Agent

No in-app purchases

Questions

Is Co free?
Co is free to download, with no in-app purchases.
Is Relay Smart Agent free?
Relay Smart Agent is free to download, with no in-app purchases.
Which has better reviews, Co or Relay Smart Agent?
Co is rated higher. Co averages 2.6 out of 5 from 17 ratings, while Relay Smart Agent averages 1.2 from 33 ratings.
Do Co or Relay Smart Agent have ads?
Neither Co nor Relay Smart Agent shows ads.
Which is updated more often, Co or Relay Smart Agent?
Co ships an update every 4 months, and Relay Smart Agent every 2 months. Most recently, Co was updated on November 1, 2026 and Relay Smart Agent on November 2, 2026.

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