Comparison

JoinU @Harvard vs Cristo Rey Cornerstone

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

Head to head

JoinU @Harvard

Social Networking at Harvard

Free

🌐 Social Networking

No ratingsView app →

Cristo Rey Cornerstone

Free

🌐 Social Networking

No ratingsView app →

About

JoinU @Harvard

Features

Read full description

JoinU is a mobile app that helps build community at Harvard by connecting people around shared interests. Want to advertise a new event? Need activity partners? Explore new activities? Do this and more with JoinU.

About

Cristo Rey Cornerstone

Read full description

Cristo Rey Cornerstone is the official platform of the Cristo Rey Network — a centralized hub for school leaders, staff, and national office teams to connect, collaborate, and grow. Whether you're looking for professional development opportunities, key resources for your department, or a space to share wins and ask questions, Cornerstone brings the network to your fingertips.

Screenshots

JoinU @Harvard3 screens

Cristo Rey Cornerstone3 screens

Verdict

The call

The clearest difference is device support: JoinU @Harvard at 3 against Cristo Rey Cornerstone's —. JoinU @Harvard also leads on iOS requirement (13.4 vs 15.1). On price, update cadence 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.

UpkeepUpdate frequency

JoinU @Harvard ships an update monthly, Cristo Rey Cornerstone every 5 weeks. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level

JoinU @Harvard versus Cristo Rey Cornerstone: the parameters behind the verdict, then further details
Parameter	JoinU @Harvard	Cristo Rey Cornerstone
Price	Free	Free
Update frequency	Monthly — better	Every 5 weeks
Ads	No	—
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	—
Requires iOS	13.4 — better	15.1
Further details — not scored
Size	26 MB	74 MB
Age rating	4+	17+
Developer	Harvard University	Mark Bazin

In-app purchases

None

JoinU @Harvard

No in-app purchases

None

Cristo Rey Cornerstone

No in-app purchases

Questions

Is JoinU @Harvard free?

JoinU @Harvard is free to download, with no in-app purchases.

Is Cristo Rey Cornerstone free?

Cristo Rey Cornerstone is free to download, with no in-app purchases.

Which is updated more often, JoinU @Harvard or Cristo Rey Cornerstone?

JoinU @Harvard ships an update monthly, and Cristo Rey Cornerstone every 5 weeks. Most recently, JoinU @Harvard was updated on October 17, 2026 and Cristo Rey Cornerstone on October 7, 2026.