Comparison

COSI Science vs LLSD ParentSquare

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

Head to head
About

COSI Science

Explore science at home with engaging videos and hands-on activities. Participate in citizen science projects or take virtual tours. This app brings the Center of Science and Industry's educational content to your family.

Highlights
  • At-home science discovery
  • Engaging science videos
  • Hands-on science activities
  • Citizen science participation
  • Virtual museum tours
  • Science challenges
Features
Read full description

Check out the COSI app for fun at-home science discovery and learning! Every weekday, we provide exciting and engaging science through COSI videos and hands-on science you can try with your family at home through COSI Connects. Try a Science Challenge, participate in a Citizen Science activity, or take a virtual tour through the American Museum of Natural History Dinosaur Gallery. COSI, Columbus, Ohio's dynamic Center of Science and Industry, inspires the scientists, dreamers, and innovators of tomorrow. Opened in 1964 at Memorial Hall in downtown Columbus, COSI moved in 1999 to a new 320,000-square-foot home designed by internationally-renowned architect Arata Isozaki, creating one of the largest modern-built science centers in the United States.

About

LLSD ParentSquare

This app connects schools and families, providing a centralized platform for communication. It delivers important alerts, messages from teachers, and school updates, ensuring families stay informed about their child's education and school activities.

Highlights
  • School news and updates
  • Direct messaging with teachers
  • Automatic language translation
  • Attendance and fee management
  • Group conversations
  • Volunteer and conference sign-ups
Features
Read full description

What is LLSD ParentSquare? LLSD ParentSquare helps schools and families stay connected and informed—all in one easy place. Whether it’s a quick message from a teacher, an important alert from the district, or a reminder about tomorrow’s field trip, ParentSquare makes sure families never miss a thing. Why families and teachers love LLSD ParentSquare: • Simple, easy-to-use app and website • Messages are automatically translated into 190+ languages • Best-in-class safety and security practices • One place for all school updates, alerts, and messages With LLSD ParentSquare, families and staff save time and stay connected—so everyone can focus on helping students succeed. LLSD ParentSquare for iOS The LLSD ParentSquare app makes it easy for families to stay in the loop and engage with their child’s school community. With the app, parents and guardians can: • See school news, classroom updates, and photos • Receive important notices like attendance alerts and cafeteria balances • Message teachers and staff directly • Join group conversations • Sign up for wishlist items, volunteering, and conferences • Respond to absences or tardies* • Pay school-related fees and invoices* * If included with your school's implementation

Screenshots

COSI Science3 screens
LLSD ParentSquare4 screens

Verdict

The call

The clearest difference is review sentiment: COSI Science at 64% against LLSD ParentSquare's 0%. COSI Science also leads on iOS requirement (11.0 vs 17.0). LLSD ParentSquare's advantage is update cadence (weekly vs every 2 months) and rating (4.3 vs 4.1). 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

LLSD ParentSquare holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 27 and 11 respectively. Written reviews complicate that: 64% of COSI Science's written reviews are positive against 0% of LLSD ParentSquare's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

COSI Science ships an update every 2 months, LLSD ParentSquare weekly. The most recent releases landed on August 9, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
COSI Science versus LLSD ParentSquare: the parameters behind the verdict, then further details
ParameterCOSI ScienceLLSD ParentSquare
PriceFreeFree
Rating4.1 (27 ratings)4.3 (11 ratings) — better
Positive reviews64.3% of reviews — better0.0% of reviews
Number of ratings27 — better11
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size21 MB151 MB
Age rating4+4+
DeveloperCOSIParentSquare

Customer experience

COSI Science

All ratings27 ratings
Positive77.8%
Neutral3.7%
Negative18.5%
Written reviews14 reviews
Positive64.3%
Neutral7.1%
Negative28.6%

LLSD ParentSquare

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

COSI Science

No in-app purchases

None

LLSD ParentSquare

No in-app purchases

Questions

Is COSI Science free?
COSI Science is free to download, with no in-app purchases.
Is LLSD ParentSquare free?
LLSD ParentSquare is free to download, with no in-app purchases.
Which has better reviews, COSI Science or LLSD ParentSquare?
LLSD ParentSquare is rated higher. COSI Science averages 4.1 out of 5 from 27 ratings, while LLSD ParentSquare averages 4.3 from 11 ratings.
Do COSI Science or LLSD ParentSquare have ads?
Neither COSI Science nor LLSD ParentSquare shows ads.
Which is updated more often, COSI Science or LLSD ParentSquare?
COSI Science ships an update every 2 months, and LLSD ParentSquare weekly. Most recently, COSI Science was updated on August 9, 2026 and LLSD ParentSquare on September 23, 2026.

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