Your Chapter's Photos, Privately

Rush events, formals, tailgates, chapter life — one private album for your fraternity or sorority.

Download Cluster Free
College students at a tailgate gathering

Keep it in the house

Tailgates, mixers, philanthropy events, game days — every chapter has moments worth sharing. Create a private album where brothers or sisters can post photos without putting them on social media. Only members you invite can see or contribute. No algorithms, no strangers, no screenshots showing up where they shouldn't.

Group dressed up for a sorority or fraternity formal event

Formals, rush, and everything in between

Create separate albums for each event — formal, rush week, spring break, senior send-off. Everyone in the chapter posts their photos and the whole house can browse, comment, and download. Built by a small, independent company that keeps things simple and keeps your photos private.

How It Works

1

Create an album

Start an album for your chapter or event.

2

Invite the house

Share a link so brothers or sisters can join.

3

Everyone posts photos

The whole chapter contributes to every event.

4

Keep the memories

Browse, download, or print a photo book for the house.

Real App Store Reviews

★★★★★

Finally

Finally a completely easy to use photo sharing app that lets you write about the pictures too. I've tried a bunch, this is the best and easiest. My families love it!

— be nice out there

★★★★★

Liking this app

Easy to set up and quite user friendly. Good chance to share pics and comments with others in a private forum.

— sjh0921

★★★★★

Best way to share photos with friends and family

Cluster is a simple easy to use app that is ideal for sharing photos with friends and family.

— bruceadix

See all reviews in the App Store →

Why Cluster?

🔒

Totally Private

Only people you invite can see your photos and videos. Nothing is public, ever.

🛠

Built by a Small Team

Cluster is built and maintained by a small, independent company that puts your privacy first.

🚫

Not Social Media

No algorithms, no ads, no strangers. Just the people you choose to share with.

📖

Beautiful Photo Books

Turn your group's photos into a gorgeous printed photo book. Learn more →

Available everywhere

Use Cluster on all your devices.

Cluster on the Web

Web

Access Cluster from any browser.

Log In
Cluster on iPhone

iPhone

Download the free iOS app.

Download
Cluster on Android

Android

Download the free Android app.

Download

Frequently Asked Questions

How much does it cost?

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Cluster is free to get started — up to 10 groups with 1,000 photos each. To unlock larger groups and more features, subscribe via the App Store or Google Play.

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Is what I post public?

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No. Everything you post is completely private. Only people who have been invited to a group can see its contents. Nothing is ever public.

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How are my photos kept safe?

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Your photos are stored securely and are only accessible to members of the group they were posted to. We never share your photos with third parties.

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How do I invite someone to join a group album?

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Open the group, tap the invite button, and share the private link via text, email, or any messaging app. Only people with the link can request to join.

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Is there a limit to group size?

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Free accounts support groups up to a certain size. For larger groups, you can upgrade to a paid plan via the App Store or Google Play.

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How do I change permissions (block posting, inviting) for the album?

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Open the group settings and adjust who can post, comment, and invite new members. Admins have full control over group permissions.

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Start your chapter's album

Free to download. Free to use. Keep your chapter's photos private.

Download Cluster Free See all use cases →