Ham Square vs UberSDR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ham Square
This app provides radio amateurs with a quick and easy way to determine their Maidenhead Locator, a grid system used globally for location communication. It's a free tool for ham radio operators.
- Displays Maidenhead Locator
- Uses current location
- Convenient for radio amateurs
- Global grid system
- Free application
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Ham Square is a free application that displays the Maidenhead Locator, or "square", for your current location. This grid system is used by radio amateurs worldwide as a convenient and short way of representing and communicating a location. Details of more ham radio apps from KramStuff are at http://www.kramstuff.com
UberSDR
Transform your iPhone or iPad into a global radio receiver. Connect to public directories or your own network to tune into live spectrum and waterfall displays. Enjoy advanced audio filtering and signal processing features for an immersive listening experience.
- Global radio receiver access
- Live spectrum and waterfall display
- Frequency tuning and signal filtering
- Multiple demodulation modes
- Background audio playback
- Band plan and DX cluster integration
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UberSDR makes your iPhone or iPad the front end of a real radio receiver, anywhere in the world. Pick one from the public directory — dozens of them, run by enthusiasts from Scotland to Brazil — or find a receiver on your own network. No account, no sign-up, no hardware: you are listening within seconds. Tune by spinning the frequency dial, dragging the waterfall, or tapping a marker. Signals arrive on a live spectrum and waterfall you can zoom and hold. Choose LSB, USB, AM, SAM, NFM, FM or CW, set the passband by hand, and pull a weak station out of the noise with noise reduction, a notch filter and squelch. Shortwave broadcasters, the amateur bands, aviation, marine, time signals and stranger things besides. A band plan and live DX cluster spots say what you are hearing; bookmarks take you back to it. Audio carries on when you lock the screen or move to another app, with the usual controls on the lock screen. Everything stays on your device. Nothing is collected, and there is nothing to sign in to.
Screenshots
Verdict
The clearest difference is update cadence: UberSDR at every 10 days against Ham Square's every 84 months. Ham Square's advantage is rating (3.7 vs 3.5) and ratings volume (17 vs 2). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Ham Square holds the better App Store score, 3.7 against 3.5. That said, the two scores are not equally well evidenced: Ham Square has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 62% of Ham Square's written reviews are positive against 50% of UberSDR's.
Ham Square ships an update every 84 months, UberSDR every 10 days. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.
| Parameter | Ham Square | UberSDR |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (17 ratings) — better | 3.5 (2 ratings) |
| Positive reviews | 61.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 17 — better | 2 |
| Update frequency | Every 84 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 61 MB | 9 MB |
| Age rating | 4+ | 12+ |
| Developer | Kram | Nathan Higgins |
Customer experience
Ham Square
UberSDR
In-app purchases
Ham Square
No in-app purchases
UberSDR
No in-app purchases
