Comparison

JoinU @Harvard vs J

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

★ 5.01 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

J

This platform connects members of an educational lab, offering a resource library, discussion forums, and event registration. Engage with a global community and discover new materials and features regularly added to the site.

Highlights

Resource library access
Discussion forums
Event registration
Global member connection
Regular content updates

Features

Read full description

Connector is the MIT Jameel World Education Lab's member-exclusive social and engagement platform. Explore our library of resources, toolkits, and event recordings in the Resource Center, have targeted conversations with in our Forums, register for Events, and connect with other members from around the world. We frequently add materials and features to this site, so visit often!

Screenshots

JoinU @Harvard3 screens

J3 screens

Verdict

The call

The clearest difference is update cadence: JoinU @Harvard at monthly against J's every 3 months. On price, ads, in-app purchases and device support 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, J every 3 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 8 level

JoinU @Harvard versus J: the parameters behind the verdict, then further details
Parameter	JoinU @Harvard	J
Price	Free	Free
Rating	—	5.0 (1 ratings) — better
Number of ratings	—	1 — better
Update frequency	Monthly — better	Every 3 months
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	13.4	13.4
Further details — not scored
Size	26 MB	63 MB
Age rating	4+	17+
Developer	Harvard University	Massachusetts Institute of Technology

In-app purchases

None

JoinU @Harvard

No in-app purchases

None

J

No in-app purchases

Questions

Is JoinU @Harvard free?

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

Is J free?

J is free to download, with no in-app purchases.

Do JoinU @Harvard or J have ads?

Neither JoinU @Harvard nor J shows ads.

Which is updated more often, JoinU @Harvard or J?

JoinU @Harvard ships an update monthly, and J every 3 months. Most recently, JoinU @Harvard was updated on November 7, 2026 and J on October 30, 2026.