SunGraph vs Solar Watch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SunGraph
Calculate sunrise and sunset times for any location globally and any day of the year. Explore earliest/latest times, the equation of time, and sun inclination. Visualize the sun's position on Earth.
- Sunrise and sunset times worldwide
- Earliest and latest sunrise/sunset
- Equation of time display
- Sun inclination at transit
- World view of sun's position
- User location database
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SunGraph is a sunrise and sunset calculator showing sunrise and sunset times for anywhere in the world and for any day of the year. For any latitude the earliest and latest sunrise and sunset times will be displayed. The analemma screen displays the equation of time along with the inclination of the sun above the horizon at transit. A world view shows the location of the sun on the Earth for the current time, or any day of the year. A data base can store user locations.
Solar Watch
Visualize the sun and moon's paths in augmented reality and on interactive 3D maps. Access detailed data tables for celestial events, shadow simulations, and more. Ideal for professionals and enthusiasts needing precise solar and lunar information.
- Augmented Reality solar and lunar path projection
- Multifunctional 2D/3D map visualization
- Comprehensive data tables for celestial events
- Interactive 3D shadow simulator
- Sunrise, sunset, golden hour, and dusk times
- Lunar phases and moonrise/moonset times
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Solar Watch is an essential digital tool for e.g. photographers, architects, prospective house buyers, garden enthusiasts and installers of solar panels. The intuitive, sleek interface provides access to a comprehensive range of professional functionalities. SOLAR and LUNAR PATH IN AR Augmented Reality projection of the position of the sun and moon at your current location. MULTIFUNCTIONAL MAP PRESENTATION Extensive 2D and 3D visualization of the solar and lunar path, compass mode and shadow simulator. You can see at a glance which side of a building gets the most hours of sunlight per day. DATA TABLES A comprehensive overview of sun positions, day and night lengths, sunrise and sunset times, golden hour and dusk (astronomical, nautical and civil). All solar eclipses, winter and summer solstices and equinoxes. All lunar eclipses, supermoon calendar, moon positions and visibility. Lunar phases, moonrise and moonset times. INTERACTIVE 3D SHADOW SIMULATOR Position a customizable 3D object on the map to have the app simulate its shadow at any time of year. No ads! The free version of the app shows all information about solar and lunar positions for your current time and location only. The paid Premium version of the app grants you access to global information for any time of year. Subscription: • Title: Full Version Subscription • Length of subscription: 6 months • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms and conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://apps.redwoods.eu/privacy
Screenshots
Verdict
The clearest difference is rating: Solar Watch at 4.8 against SunGraph's 3.2. Solar Watch also leads on review sentiment (78% vs 57%) and ratings volume (117 vs 14). SunGraph's advantage is in-app purchases (none vs 2) and device support (4 vs 2). On price, update cadence and ads 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. Solar Watch sells 2 in-app purchases, starting at $5.99 per 6 months. SunGraph asks for nothing beyond the download.
Solar Watch holds the better App Store score, 4.8 against 3.2. That said, the two scores are not equally well evidenced: Solar Watch has 117 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 57% of SunGraph's written reviews are positive against 78% of Solar Watch's.
SunGraph ships an update every 4 months, Solar Watch every 2 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.
| Parameter | SunGraph | Solar Watch |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (14 ratings) | 4.8 (117 ratings) — better |
| Positive reviews | 56.8% of reviews | 78.4% of reviews — better |
| Number of ratings | 14 | 117 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 11 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Tremont Air, LLC | Zuzana Eskinasi |
Customer experience
SunGraph
Solar Watch
In-app purchases
SunGraph
No in-app purchases
Solar Watch
- Premium Version$5.996 Months
- Premium Version$11.99
