Comparison

Cluster vs KIT3

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

Head to head
About

Cluster

Create private groups to share photos and videos with specific people. Ideal for families, friends, or colleagues to share moments securely without broadcasting to a wider audience. Access your shared memories across mobile devices and the web.

Highlights
  • Create private sharing groups
  • Share photos and videos
  • Invite specific members
  • Web and mobile access
  • Relevant notifications
  • Secure and private sharing
Features
Read full description

* Featured as “New and Noteworthy” by Apple * Cluster makes it possible to create private groups where you share moments through photos and videos with the people you care about. Create a group with family, a group of friends, coworkers, people from your home town, or anyone else! Great for: • New Moms! Share photos of a new baby with close friends and family without spamming everyone on other social networks • College Students! Share memories with friends not appropriate for Facebook • Families! Keep in touch even if you’re not in the same place. Tons of people already trust Cluster. Here’s why: • Private & secure: Only invited members of the group can see what you post. • An app for everyone: Access Cluster through gorgeous mobile apps and the web. • Relevant notifications: Know when people you invited post new things to the group. How it works: 1. Create a group. 2. Add the people you care about. 3. Share photos, videos and notes together. People LOVE Cluster: • “The app is fantastic! Me and my sister were so happy to find it. We made a group of the whole family and its great. My big brother is living in Europe, my sister traveling for the next 4 months and the rest of the family lives in Chile. They upload pictures and we can see how and what they are doing. Its very simple to use (even our grandmother is in the group!).” • “I downloaded 10 different photo sharing apps, not including your Cluster app. I needed an app that allowed the creation of multiple albums, other users could join from anywhere, was password protected and SIMPLE. I deleted every app except your Cluster app. All the other apps were either too difficult to explain...to someone 8 hours away, too complicated to set up and/or upload, they limited the number of albums a user can create, required Bluetooth or wifi to share, or required a social media account to set up. Your app served all the purposes that I need. It is great, fabulous, fun & simple! Keep up the good work!” • “I really like the privacy of the app and the fact that only people invited or with the code can access our pictures.” • “I want to thank you all for such a wonderful product - it really has brought us all even closer together. The constant banter, the photo streams, the comedy...all of it...it's been awesome. So, as far as my feedback goes, I'd say this is an awesome program and we'll continue using it for as long as it's available!” The press LOVES Cluster: • Featured by the Apple App Store (“New and Noteworthy”), NYTimes, TechCrunch and many more! Cluster Club is a monthly or annual subscription to give admins more control over their groups. Check it out by visiting the Settings → Subscription Settings section of the app. By purchasing a subscription you agree to Cluster's Terms of Use: https://cluster.co/terms/ and Privacy Policy: https://cluster.co/privacy/

About

KIT3

This app offers a deliberate way to maintain close connections with a select group of people. Each week, users share three photos and a status update with chosen friends, fostering private, one-to-one communication without social media pressures.

Highlights
  • Weekly photo sharing
  • Private one-to-one conversations
  • Optional captions and status updates
  • Invite-only access
  • No social media feed or follower counts
  • Last four weeks of communication history
Features
Read full description

KIT3 is a small, deliberate way to stay close to a handful of people. Every week you choose three photos for each friend. Every Tuesday they go out together, at the same moment for everyone, and your friend's three arrive as yours leave. That's the whole app. There is no feed to scroll, no follower count, no algorithm deciding who hears from you. A KIT is one person, and what you send them is seen by them alone. WHAT A WEEK LOOKS LIKE The queue opens on Friday and closes on Tuesday. In between, choose three photos for each friend. Add a caption for everyone, or a different one for one person. Set a short status — how you're doing, what you're listening to, where you are — and it rides along with your photos. On Tuesday everything sends itself. You don't have to be in the app. WHEN THEIRS ARRIVE Their week opens as a set: their photos, their captions, their status. React, or leave a comment. Every conversation is private to the two of you — your other friends can't see it, and neither can anyone else. Your last four weeks stay in the app. You can keep your own photos longer if you want; what a friend sends you always goes after four weeks. BY INVITATION KIT3 is invite-only. You need a code from someone already using it, and each person has a limited number to give out. It stays small on purpose. Terms of Use: https://andrewvalko.github.io/nis-legal/kit3-terms.html

Screenshots

Cluster4 screens
KIT34 screens

Verdict

The call

The clearest difference is in-app purchases: KIT3 at none against Cluster's 6. KIT3 also leads on update cadence (every 2 days vs every 4 weeks) and rating (5.0 vs 4.8). Cluster's advantage is ratings volume (22K vs 2) and device support (4 vs 2). On price and ads 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. Cluster sells 6 in-app purchases, starting at $4.99 per month. KIT3 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

KIT3 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Cluster has 22K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Cluster ships an update every 4 weeks, KIT3 every 2 days. Both last shipped on October 17, 2026.

Scorecard7 real differences · 3 level
Cluster versus KIT3: the parameters behind the verdict, then further details
ParameterClusterKIT3
PriceFreeFree
Rating4.8 (22K ratings)5.0 (2 ratings) — better
Positive reviews56.4% of reviews—
Number of ratings22K — better2
Update frequencyEvery 4 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size37 MB43 MB
Age rating4+12+
DeveloperCluster Labs, Inc.Andrew Valko

Customer experience

Cluster

All ratings22,079 ratings
Positive96.3%
Neutral1.6%
Negative2.1%
Written reviews236 reviews
Positive56.4%
Neutral9.3%
Negative34.3%

KIT3

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Cluster

Reported bugs

5 issues
  • App crashes on launch for some users
  • Photos and videos fail to upload consistently
  • Notification issues - not receiving updates
  • Compatibility problems with newer Android devices
  • Unexpected errors when trying to access accounts

Requested features

5 requests
  • Add ability to edit/delete posts
  • Improve photo/video upload reliability
  • Implement better notification system
  • Add option to create galleries/albums within groups
  • Enhance search and filtering capabilities

KIT3

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Cluster

Subscriptions6
  • Cluster Friend$4.991 Month
  • Cluster Family$9.991 Month
  • Cluster Pro$19.991 Month
Show 3 more
  • Cluster Friend$49.991 Year
  • Cluster Family$99.991 Year
  • Cluster Pro$199.991 Year
None

KIT3

No in-app purchases

Questions

Is Cluster free?
Cluster is free to download, with in-app purchases available.
Is KIT3 free?
KIT3 is free to download, with no in-app purchases.
Which has better reviews, Cluster or KIT3?
KIT3 is rated higher. Cluster averages 4.8 out of 5 from 22K ratings, while KIT3 averages 5.0 from 2 ratings.
Do Cluster or KIT3 have ads?
Neither Cluster nor KIT3 shows ads.
Which is updated more often, Cluster or KIT3?
Cluster ships an update every 4 weeks, and KIT3 every 2 days. Most recently, Cluster was updated on October 17, 2026 and KIT3 on October 17, 2026.

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