RRA(SWTIS) vs Nice Days!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RRA(SWTIS)
This app provides real-time space weather data, forecasts, and alerts. It monitors solar activity and its potential effects on Earth, including impacts on aviation, satellites, and power grids.
- Real-time space weather monitoring
- 3-day space weather forecast
- Forecasting models and observation data
- Space weather effects analysis
- Space weather news and announcements
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What is the Solar flare? What's going on around the Sun and the Earth ? So, the KSWC finally developed this space weather mobile APP. It is expected that this APP is a portal site of the space weather, and provides the observation data, forecasting models and SWx monitors in real time. The KSWC was formally established as such in 2011, and 14th member of ISES(International Space Environment Service). The KSWC has dreamed of "the safety Korea without space weather disaster" by accurate forecasts and prompt alerts. The main features 1. Space weather now 2. 3-day forecast of space weather 3. forecasting models and observation data 4. Space weather effects(Aviation, satellites, GNSS, Power Grids, Communications) 5. NEWS and announcement of of KSWC The KSWC(Korea Space Weather Center) of RRA(Radio Research Agency) http://www.spaceweather.kasa.go.kr E-mail spaceweather@korea.kr
Nice Days!
Get real-time weather information and forecasts for any location worldwide. Plan your day, travels, and activities with detailed weather data and timely alerts to stay prepared for changing conditions.
- Global weather forecast
- Real-time weather information
- Detailed weather parameters
- Personalized watchlist
- Real-time weather alerts
- Hourly and daily forecasts
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Stay one step ahead to enjoy nice days at all times! Nice Days! is a powerful and user-friendly weather app that brings you real-time weather information at your fingertips. With Nice Days!, effortlessly organize your daily life and travel plans. Our app provides access to weather forecasts in any location worldwide, giving you the most current and accurate data, no matter where you are. On our main page, easily access weather reports for your favorite locations and, additionally, explore weather forecasts for new destinations you plan to visit. Planning an unforgettable vacation? With Nice Days!, you can check in advance the temperature, humidity, wind speed, and other crucial weather parameters of your travel destination. By doing so, you can pack the right clothes and items, ensuring you fully enjoy your trip. Nice Days! also offers real-time weather alerts, helping you continue your daily routine without being affected by unexpected rain showers or sudden weather changes. When you forget your umbrella or encounter an unforeseen cold front, Nice Days! sends you reminders to stay safe. Key Features of our App: - Global Weather Forecast: Access weather reports for cities and regions all around the world. - Personalized Watchlist: Quickly access frequently visited places by adding them to your favorites. - Detailed Weather Information: View temperature, humidity, wind speed and direction, hourly and daily forecasts presented in visual charts. Make your life even easier with Nice Days! and plan each day to perfection. Adjust your activities according to the weather and live your memories to the fullest! Download Nice Days! now and start exploring the wonders of nature.
Screenshots
Verdict
The clearest difference is ads: RRA(SWTIS) at none against Nice Days!'s shown. RRA(SWTIS) also leads on monetization model (free vs ad-supported). Nice Days!'s advantage is update cadence (fortnightly vs every 4 months) and review sentiment (100% vs 86%). On price, in-app purchases, device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RRA(SWTIS) ships an update every 4 months, Nice Days! fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | RRA(SWTIS) | Nice Days! |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 20 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | 국립전파연구원 | Murat Tunca |
Customer experience
RRA(SWTIS)
Nice Days!
In-app purchases
RRA(SWTIS)
No in-app purchases
Nice Days!
No in-app purchases









