CAScience vs Roster
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
CAScience
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California Association of Science Educators (CASE) will be the leader in working for every educator to build scientific literacy and agency for themselves and for all students. CASE is a non-profit 501(c)(3) membership organization that represents science educators statewide in every science discipline at every grade level, Kindergarten through Higher Education. CASE demonstrates leadership in science education in the state by organizing and participating in statewide reform initiatives, and provides leadership opportunities for members who wish to serve on state advisory committees, including framework, standards, and textbook committees. CASE sponsors the California Science Education Conference, the largest state conference designed specifically for science educators statewide and publishesΒ California Classroom Science, a bi-monthly e-newspaper packed with news, information, resources, ideas, and activities of current interest to science educators.
Roster
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Roster is the growth operating system for community organizations β neighborhood associations, nonprofits, clubs, sports leagues, HOAs, and membership-based businesses. Open Roster and get an instant snapshot of your organization's health: active members, email subscribers, RSVPs, and donations, each with month-over-month trends, so you always know whether you're growing. Create events that drive growth Every event you create comes with a shareable QR code and growth tracking built in. Post it at the door, print it on flyers, or share the link β Roster tracks exactly who joined, subscribed, or gave because of that event. Turn in-person moments into lasting growth When someone scans your QR code, they land on a simple page where they can: * Join as a paying member, at whatever tiers you set * Make a one-time or recurring donation * Subscribe to your mailing list * RSVP for the event itself Every one of those actions becomes a real, permanent record in your organization β not just a walk-up conversation you'll forget by next week. Know the moment someone engages Roster's Activity feed notifies you in real time as people join, give, subscribe, or RSVP, so you can say thank-you while it still matters β and follow up with the people who are ready for more. Everyone, in one place As your community grows, Roster keeps every contact's full history in one record: membership status and tier, mailing list status, donation history, and event attendance β automatically kept current as people interact with you, no manual data entry required. Built for how you already work * Accept payments with Stripe * Sync your mailing list with Mailchimp * Import existing rosters and payment history from a spreadsheet * Manage your team with owner, editor, and viewer roles Whether you're running a 50-person neighborhood group or a 5,000-member association, Roster replaces the spreadsheet-and-sticky-notes system with one place to see your growth, run your events, and know your community.
Screenshots
Verdict
The clearest difference is update cadence: Roster at daily against CAScience's fortnightly. CAScience's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CAScience ships an update fortnightly, Roster daily. Both last shipped on September 14, 2026.
| Parameter | CAScience | Roster |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Daily β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 15.0 β better | 16.4 |
| Further details β not scored | ||
| Size | 53 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | California Science Teachers Association | Tony Liu |
In-app purchases
CAScience
No in-app purchases
Roster
No in-app purchases








