Comparison

Co vs Lightspeed Systems Web Filter

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

Lightspeed Systems Web Filter

This application provides robust content filtering for schools on mobile devices. It ensures compliance with regulations and offers reporting on web traffic without requiring a proxy server. A license from the developer is necessary for full functionality.

Highlights
  • Content filtering for mobile devices
  • CIPA compliance
  • Web traffic reporting
  • Proxy-free operation
  • School-focused filtering
Features
Read full description

The Web Filter for iOS by Lightspeed Systems gives schools powerful content filtering on mobile devices wherever they go. Filter web activity, ensure CIPA compliance, and report on web traffic without the need for a proxy. Requires Web Filter license from Lightspeed Systems.

Screenshots

Co4 screens
Lightspeed Systems Web Filter1 screens

Verdict

The call

The clearest difference is rating: Co at 2.6 against Lightspeed Systems Web Filter's 1.9. Co also leads on review sentiment (8% vs 0%). Lightspeed Systems Web Filter's advantage is update cadence (every 3 weeks 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 1.9. Both are backed by a comparable volume of ratings — 17 and 7 respectively. Written reviews point the same way: 8% of Co's written reviews are positive against 0% of Lightspeed Systems Web Filter's.

UpkeepUpdate frequency

Co ships an update every 4 months, Lightspeed Systems Web Filter every 3 weeks. The most recent releases landed on October 29, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
Co versus Lightspeed Systems Web Filter: the parameters behind the verdict, then further details
ParameterCoLightspeed Systems Web Filter
PriceFreeFree
Rating2.6 (17 ratings) — better1.9 (7 ratings)
Positive reviews8.3% of reviews — better0.0% of reviews
Number of ratings17 — better7
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.09.0 — better
Further details — not scored
Size45 MB16 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%

Lightspeed Systems Web Filter

All ratings7 ratings
Positive14.3%
Neutral14.3%
Negative71.4%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Co

No in-app purchases

None

Lightspeed Systems Web Filter

No in-app purchases

Questions

Is Co free?
Co is free to download, with no in-app purchases.
Is Lightspeed Systems Web Filter free?
Lightspeed Systems Web Filter is free to download, with no in-app purchases.
Which has better reviews, Co or Lightspeed Systems Web Filter?
Co is rated higher. Co averages 2.6 out of 5 from 17 ratings, while Lightspeed Systems Web Filter averages 1.9 from 7 ratings.
Do Co or Lightspeed Systems Web Filter have ads?
Neither Co nor Lightspeed Systems Web Filter shows ads.
Which is updated more often, Co or Lightspeed Systems Web Filter?
Co ships an update every 4 months, and Lightspeed Systems Web Filter every 3 weeks. Most recently, Co was updated on October 29, 2026 and Lightspeed Systems Web Filter on November 2, 2026.

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