Comparison

RRA(SWTIS) vs Nice Days!

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Real-time space weather monitoring
  • 3-day space weather forecast
  • Forecasting models and observation data
  • Space weather effects analysis
  • Space weather news and announcements
Features
Read full description

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

About

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.

Highlights
  • Global weather forecast
  • Real-time weather information
  • Detailed weather parameters
  • Personalized watchlist
  • Real-time weather alerts
  • Hourly and daily forecasts
Features
Read full description

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

RRA(SWTIS)4 screens
Nice Days!4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
RRA(SWTIS) versus Nice Days!: the parameters behind the verdict, then further details
ParameterRRA(SWTIS)Nice Days!
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings5 — better—
Update frequencyEvery 4 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.0
Further details — not scored
Size20 MB11 MB
Age rating4+4+
Developer국립전파연구원Murat Tunca

Customer experience

RRA(SWTIS)

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Nice Days!

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RRA(SWTIS)

No in-app purchases

None

Nice Days!

No in-app purchases

Questions

Is RRA(SWTIS) free?
RRA(SWTIS) is free to download, with no in-app purchases.
Is Nice Days! free?
Nice Days! is free to download, with no in-app purchases.
Do RRA(SWTIS) or Nice Days! have ads?
Nice Days! shows ads; RRA(SWTIS) does not.
Which is updated more often, RRA(SWTIS) or Nice Days!?
RRA(SWTIS) ships an update every 4 months, and Nice Days! fortnightly. Most recently, RRA(SWTIS) was updated on November 1, 2026 and Nice Days! on November 3, 2026.

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