Until Then Countdown vs CoronaSDR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Until Then Countdown
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Until Then Countdown is a clean, simple countdown app designed to help you keep track of the moments that matter most. Whether you're waiting for a birthday, vacation, holiday, anniversary, special event, or personal milestone, Until Then gives you a clear, easy-to-read countdown so you always know exactly how much time is left. Create unlimited countdown events, name them however you like, and watch the timer update in real-time. Each event runs entirely on your device with no accounts, no login screens, and no complicated setup. Just open the app, add an event, and enjoy a smooth, distraction-free experience. Until Then was built for people who want a simple and reliable countdown tool without unnecessary features, ads, or clutter. It’s quick, lightweight, and designed to stay out of your way so you can focus on what matters: the countdown itself. Features Create custom countdown events in seconds Clean, minimal design that’s easy on the eyes Real-time updates showing days, hours, minutes, and seconds Edit or delete events at any time Completely offline — your events stay on your device No data collection, no ads, no accounts, no tracking Perfect for birthdays, trips, deadlines, goals, and big personal moments Why People Love It Simple: No complicated menus or learning curve Fast: Add events instantly Private: Nothing leaves your device — ever Focused: Only the features you need, none of the clutter you don’t Until Then is perfect for anyone who wants a dependable countdown app that just works. Whether you're counting the days until vacation or tracking an important deadline, Until Then helps you stay organized and motivated. Privacy First Until Then collects zero user data. No analytics, no tracking, no personal information, no background servers. Your countdowns belong entirely to you. Download Until Then today and stay connected to the moments that matter most.
CoronaSDR
This application allows users to connect to and control RTL-SDR servers on their local network. It provides live spectrum and waterfall displays, various demodulation modes, and DSP controls for audio filtering and signal tuning. Users can save favorite stations and adjust RF settings.
- Live spectrum and waterfall display
- Multiple demodulation modes (AM, NFM, WFM, USB, LSB, CW)
- DSP controls (squelch, AGC, filters)
- Station favorites with import/export
- RF controls (PPM, tuner options)
- Diagnostics and performance pipeline
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CoronaSDR is an iOS app for listening to rtl_tcp SDR servers over your local network. Key features: - Live spectrum and waterfall rendering - Demodulation modes: AM, NFM, WFM, USB, LSB, CW - DSP controls: squelch, AGC, audio filters, de-emphasis - Station favorites with import/export - RF controls such as PPM and tuner options (hardware/server dependent) - Diagnostics and a performance-focused pipeline No account is required. Set your rtl_tcp host and port, connect, and tune. Built by Silviu YO6SAY for the radio community.
Screenshots
Verdict
The clearest difference is price: CoronaSDR at Free against Until Then Countdown's $0.99. Until Then Countdown's advantage is iOS requirement (14.0 vs 18.0). On update cadence, ads, in-app purchases and device support 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
CoronaSDR is free to download; Until Then Countdown costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Until Then Countdown ships an update every 5 days, CoronaSDR every 9 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Until Then Countdown | CoronaSDR |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (10 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 10 — better |
| Update frequency | Every 5 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | James Wise | Alien Systems S.R.L. |
In-app purchases
Until Then Countdown
No in-app purchases
CoronaSDR
No in-app purchases









