Sunny@SG vs Blue Days
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sunny@SG
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Ultraviolet (UV) radiation is part of the electromagnetic spectrum emitted by the sun. Some ultraviolet (UV) exposure is important for health functions such as Vitamin D production in the body and treating diseases like jaundice in babies or psoriasis and rickets in adults. However, exposure to strong UV radiation is harmful. Excessive exposure may cause the following problems: - Skin cancer - Cataracts - Suppression of the immune system - Premature ageing of the skin Sunny@SG is useful utility that allows you to check the hourly UV index (UVI) on the go. Features include: - Access to hourly UV index reading from Meteorological Service Singapore (MSS) on the go. - Notification when UV index reaches high level. Notification can be turned on and off as per your preference. - Share the current UV index with your friends and family and keep them informed and safe! All feedback and suggestions are welcome. You can reach us via email (support@hosaystudios.com) or the contact feature within the app. Join our facebook fan page. http://www.facebook.com/hosaystudios Note: This app is developed without any involvement of MSS. Any inaccuracies found are not the responsibility of and should not be attributed to MSS.
Blue Days
Get highly accurate, hyperlocal weather forecasts with a clean interface. View current conditions, detailed 7-day forecasts with temperature gradients, and hour-by-hour precipitation.
- Hyperlocal weather accuracy
- Current conditions and descriptions
- 7-day forecast with temperature gradients
- Hour-by-hour precipitation slider
- Customizable icon and color themes
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Blue Days gives you highly accurate, hyperlocal weather in a simple, well-designed interface. It uses dozens of high-accuracy weather sources to provide precise weather information at your location or wherever you search. Get current conditions and a 7-day forecast, complete with custom backgrounds. The 7-day forecast includes a color gradient indicating the range of temperatures. Features: • Current Weather Conditions and Descriptions. • Detailed Forecast View, Showing: Temperature, Precipitation, Wind, Sunset, and Sunrise. • Precipitation Slider Bar showing Hour-by-Hour Precipitation for a Selected Day of the Week. • Precipitation Chance along a Horizontal Bar for the Selected Day. • Icons and Colors Themes that change for every Weather Condition. I’d love to hear your feedback! Please take a moment to leave a review.
Screenshots
Verdict
The clearest difference is in-app purchases: Sunny@SG at none against Blue Days's 1. Sunny@SG also leads on iOS requirement (8.0 vs 17.2). Blue Days's advantage is ads (none vs shown) and update cadence (fortnightly vs every 2 months). On price 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
Both are free to download. Blue Days sells 1 in-app purchase, starting at $1.99 per year. Sunny@SG asks for nothing beyond the download.
Sunny@SG ships an update every 2 months, Blue Days fortnightly. Both last shipped on November 2, 2026.
| Parameter | Sunny@SG | Blue Days |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (238 ratings) — better |
| Positive reviews | — | 44.1% of reviews |
| Number of ratings | — | 238 — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 42 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Hosay Studios | James Bevins |
In-app purchases
Sunny@SG
No in-app purchases
Blue Days
- One Year Subscription7 Days trial$1.991 Year
