Comparison

Cluster vs COSMO

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

COSMO

This app allows parents to manage a child's smart watch for safety and communication. It offers GPS tracking, contact management, and customizable alerts for peace of mind. Parents can also monitor activity and set quiet times for school.

Highlights
  • GPS location tracking
  • Approved contact management
  • Geo-fence 'SafeZone' alerts
  • School Mode for distraction-free learning
  • SOS emergency alerts
  • Activity tracking and goals
  • Customizable alarms and reminders
Features
Read full description

Keep your kids safe and connected with the COSMO Mission Control parent app and JrTrack kids smart watch. With Mission Control, you have all the tools you need for safety, connection, and convenience right in the palm of your hand. JrTrack is the all-in-one wearable phone, watch, and GPS tracker that’s safe for kids and trusted by parents. It pairs seamlessly with the Mission Control parent app where you can: - Add and manage approved contacts and guardians for safety & security - Check your child’s location with reliable GPS tracking - Set custom geo-fence “SafeZones” and receive check-in alerts when your child enters or leaves a designated area - Set School Mode days and times to limit distractions - Track your child’s steps and set activity goals - Receive emergency alerts when your child activates SOS mode - Set custom alarms and reminders - Manage settings for your child’s JrTrack watch Loved by Parents & Kids “This was easy to set up and works wonderfully...I recommend this watch 100%” - Michele S. (TN) “We use this watch to stay in touch with my kids during the day while I’m at work. It’s a really nice thing being able to text your young kid to make sure they are okay during the day.” - Katie L (VA) “It's given us a lot of freedom and confidence” - Eric E (TX) Safe & Secure Completely COPPA compliant, safety certified, and data secure. It’s the confidence parents need, and families deserve. Connection without Compromise Families shouldn’t have to choose between connection and kids’ safety. With JrTrack and the COSMO: Mission Control app, you’re in control - no internet browsing or social media access, plus a completely customizable approved safe contact list. **The COSMO: Mission Control app is not compatible with first-generation JrTrack 1 devices.

Screenshots

Cluster4 screens
COSMO4 screens

Verdict

The call

The clearest difference is rating: Cluster at 4.8 against COSMO's 3.1. Cluster also leads on ratings volume (22K vs 270) and update cadence (every 4 weeks vs every 2 months). COSMO's advantage is in-app purchases (none vs 6). On price, review sentiment, ads and iOS requirement 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. COSMO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Cluster holds the better App Store score, 4.8 against 3.1. That said, the two scores are not equally well evidenced: Cluster has 22K ratings behind it against 270, so its average is the more settled of the two. Written reviews complicate that: 56% of Cluster's written reviews are positive against 60% of COSMO's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Cluster ships an update every 4 weeks, COSMO every 2 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
Cluster versus COSMO: the parameters behind the verdict, then further details
ParameterClusterCOSMO
PriceFreeFree
Rating4.8 (22K ratings) — better3.1 (270 ratings)
Positive reviews56.4% of reviews59.8% of reviews — better
Number of ratings22K — better270
Update frequencyEvery 4 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size37 MB20 MB
Age rating4+4+
DeveloperCluster Labs, Inc.com.cosmo.smartwatch

Customer experience

Cluster

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

COSMO

All ratings270 ratings
Positive50.4%
Neutral9.6%
Negative40.0%
Written reviews204 reviews
Positive59.8%
Neutral9.8%
Negative30.4%

User reviews

Cluster

From 22K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Great for sharing photos and videos
  • 🔒 Allows private sharing with selected groups
  • 💡 Helpful for keeping family connected
  • 👍 Simple and effective interface

Room to improve

  • 🐛 Frequent crashes and bugs
  • 🐛 Issues with photo/video uploads
  • 🐛 Unreliable notifications
  • 🐛 Glitchy performance after updates
  • 🔍 Lack of search and organization features

COSMO

From 270 App Store ratings

What we love

  • 🚀 Reliable tracking and communication
  • 👍 User-friendly app and watch design
  • 🔒 Parental controls and safety features
  • 💡 Helpful for giving kids independence

Room to improve

  • 🐛 Inconsistent location tracking and updates
  • 🔋 Poor battery life
  • 🔇 Unreliable call quality
  • 🤔 Limited functionality compared to expectations

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

COSMO

Reported bugs

4 issues
  • Activation and account setup issues
  • Frequent app crashes and freezes
  • Inconsistent connectivity and service disruptions
  • Inability to disable watch without parental access

Requested features

4 requests
  • Improved location tracking accuracy and real-time updates
  • Ability for all approved contacts to text the child
  • Integrated parental portal within the app
  • Additional features like video calling, night mode, and more customization

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

COSMO

No in-app purchases

Questions

Is Cluster free?
Cluster is free to download, with in-app purchases available.
Is COSMO free?
COSMO is free to download, with no in-app purchases.
Which has better reviews, Cluster or COSMO?
Cluster is rated higher. Cluster averages 4.8 out of 5 from 22K ratings, while COSMO averages 3.1 from 270 ratings.
Do Cluster or COSMO have ads?
Neither Cluster nor COSMO shows ads.
Which is updated more often, Cluster or COSMO?
Cluster ships an update every 4 weeks, and COSMO every 2 months. Most recently, Cluster was updated on October 16, 2026 and COSMO on October 14, 2026.

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