Red Days vs SolarLunar Data
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Red Days
Easily track upcoming public holidays with a countdown to your next day off. Access a year's worth of holiday information offline, right from your wrist or phone.
- Public holiday countdowns
- US, UK, Canada, Iceland holidays
- Offline access
- Wearable support
- Yearly holiday list
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Ever wonder when the next day-off work will be? Red Days displays a countdown list of public holidays for US, UK, Canada and Iceland. Now you know how many days left until you can relax. No internet needed, a years worth of holidays at your finger tips and on your wrist.
SolarLunar Data
Visualize sun and moon shadows at any time and location. Save favorite spots, receive sunrise/sunset alerts, and check current sky conditions. Zoom in for detailed analysis of celestial body positions.
- Sun and moon shadow visualization
- Time and date manipulation
- Favorite locations list
- Sunrise/sunset alerts
- Moon phase tracking
- Map-based location search
- Current sky conditions
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Locate sun and moon shadows anytime, anywhere. Watch as you change the minute, hour, day and month. Keep a list of favorites to return to and check details of sun and moon location. Set a notification to alert you 10 minutes before the sun is at its highest each day. Quick check for sunrise, transit and set along with same for moon as well moon phase. Quick reset back to user location. Search or tap on map to change location. Zoom in for detailed examination. Easy check for current sky conditions and temperature at user selected location.
Screenshots
Verdict
The clearest difference is rating: SolarLunar Data at 5.0 against Red Days's 4.5. SolarLunar Data also leads on iOS requirement (17.0 vs 26.6). Red Days's advantage is device support (4 vs 1). On price, ratings volume, ads and in-app purchases 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.
SolarLunar Data holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
| Parameter | Red Days | SolarLunar Data |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch, Vision Pro — better | iPhone |
| Requires iOS | 26.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | (optional.is) | Thomas Mead |
Customer experience
Red Days
SolarLunar Data
In-app purchases
Red Days
No in-app purchases
SolarLunar Data
No in-app purchases
