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55
BU Score
Solid

iCluster - DX-Cluster database

4.0 ✍️ Editor
✍️ BU Analytics Review

iCluster - DX-Cluster database is an iOS app from Marcus Roskosch in the Utilities category, currently rated 4.0★ across 9 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 55Solid (established niche player). For a Utilities app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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Reviews
Forecast Revenue / mo
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($0.00)METRIC
+$2,800
5 starREVIEW
+$1,800
Mature app (16y old)METRIC
+$1,500
Good rating (4.0★)METRIC
+$800
Single-language (English only)METRIC
−$400
Pre-traction phase (9 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 22 MB🔞 4+📱 iOS 10.1+🔖 v12.0.2🔄 updated 7y ago🌐 EN📂 Utilities💰 Paid🚀 Launched 2009 (16y old)

📝 About this app

THE ORIGINAL DX-CLUSTER APP
iCluster is an iPhone and iPad App for HAMs, SWLs (Short wave radio listeners) or for everybody who want’s to know, what’s going on on the amateur radio frequencies.

This App is connecting the so called international DX-Cluster database in realtime. The results are analyzed and displayed in an easy to read overview.

The content can be filtered by frequency (e.g. 80m, 40m etc.) or mode (CW = Morse, Beacon or digital modes), Call Prefix, ITU/CQ Zone, Country and many more.

Calls (the callsign of the operators) will be decoded automatically by the App. This allows even inexperienced users to know the countries of the operators.

iCluster is an ideal tool for amateur radio operators for field days or contests. But also unlicensed users can use iCluster to find out the frequencies for their shortwave scanner or short wave radio receiver.

MAIN FEATURES:

■ Real time DX-Cluster database
■ Several pre-defined Cluster Servers
■ Easy to add your own Server (e.g. CW-Skimmer)
■ Several Filter and Filter combinations
■ Several Alarm settings
■ QRZ.com (Database!) lookup
■ QRZ.com website lookup
■ HamQTH lookup
■ Display whole cluster on a Map (Globe)
■ Display single Spot on a Map (Globe)
■ Shows distance and bearing from own location
■ iCloud Synchronization
■ UTC Clock
■ No HAM license or registering required

Take a look to the manual to find out more:

http://go-to.me/icluster-manual

This App exists since the App Store Exists as this was my first App. It has been continuously improved and re-written several times and is now available as Version 12, written in Swift 5.

It's interesting to see how many other bad copies of my App are available on the App Store. If there is another DX-Cluster App, offering features my App is missing, just let me know.

vy 73,
Marcus, DL8MRE

🆕 What's New · v12.0.2

This update fixes a few Filter and Alarm bugs, contains some new DX Cluster servers and an update Callprefix database.

vy 73,
Marcus, DL8MRE

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
iCluster - DX-Cluster database
Developer
Marcus Roskosch
Bundle ID
de.roskosch.iCluster
App Store URL
Open in App Store
Category
Utilities
Content rating
4+
Languages
EN

Company

Website
ham-radio-apps.com
Tagline
Home - HAM Radio Apps
Description
Welcome to ham-radio-apps.com, your destination for powerful HAM Radio and electronic toolbox apps for macOS and iOS. Explore feature-rich apps like SDR-Control, SmartSDR, FT-Control, TS-Control, K4-Control, HAM-Toolbox, Electronic Toolbox, and RF-Toolbox. Perfect for HAM Radio operators, electronics enthusiasts, and professionals
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
OG image

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$10.4K/mo
Top-grossing rank
Outside top 100 in US Utilities
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
https://ham-radio-apps.com/news/
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
https://ham-radio-apps.com/support/
About page
https://ham-radio-apps.com/iss-sstv-reception-using-sdr-control-a-success-story/
📈Ratings growth9 ratings+800% lifetimeShow 3-year history estimate ▾Nov 2009Nov 2023May 2026
Tracked (26 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.

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