SunCast vs Sunlitt: detailed terrain shadows or Apple ecosystem reach?
SunCast and Sunlitt are Apple-focused sun trackers with AR, map planning, sun times, weather context, and shadow mapping. SunCast is the stronger fit when you need to understand what sunlight and shade will do at a specific place. Sunlitt is the stronger fit when broad Apple-device support is the priority.
By Peter Szucs Last reviewed: August 5, 2026
Quick verdict
Both apps cover the essentials for tracking the sun. SunCast is the stronger fit for planning light at a specific location; Sunlitt is the stronger fit for users who want the experience across more Apple devices.
This comparison uses full feature sets and intentionally avoids pricing differences.
SunCast is strongest for
- Reading detailed terrain-shadow shapes across ridges, valleys, and slopes
- Planning a photo, property, garden, hike, or site visit around a precise light window
- Turning a selected solar event into a native alarm or wake-up
Sunlitt may still fit for
- Using Apple Watch, Mac, or Vision Pro alongside iPhone and iPad
- Following sun information through widgets, Live Activities, notifications, and shortcuts
- Getting a quick overview of sun and shade across a map
Side-by-side feature comparison
| Feature | SunCast | Sunlitt | Why it matters |
|---|---|---|---|
| AR sun path | Live AR path | AR path + Monolitt | Helps you visualize the sun's trajectory and lighting conditions before they occur. |
| Interactive map planning | 3D terrain map | Shadow Map | Lets you plan sunlight at any location before arriving. |
| Terrain shadow detail | Detailed terrain shade | Broad terrain shade | Reveals whether buildings or terrain will block the light you need. |
| Custom construction shadow simulation | Adjustable 3D structures | No | Shows how proposed buildings could change surrounding light before they appear on the map. |
| Building solar information | Yes | No | Provides building-level solar potential, panel capacity, annual sunshine, and estimated energy output. |
| Street-view remote scouting | Sun path in Street View | No | Lets you inspect a distant location's sun path without being there. |
| Cloud and weather context | Hourly cloud cover | Weather forecasts | Shows whether cloud cover may hide the light or shadows you planned for. |
| Solar event follow-through | Native Solar Alarms | Notifications + Live | Turns a chosen solar event into a reminder or wake-up alarm. |
Why SunCast?
It makes the shape of shade easier to read
SunCast shows detailed terrain shadows across the landscape, helping you inspect where a shadow begins, how it moves, and which parts of a slope or valley remain shaded.
It turns a light plan into an action
After finding the right window, native Solar Alarms can alert or wake you for sunrise, sunset, golden hour, blue hour, twilight, and other solar events.
It can test a future change to the scene
Construction Mode lets you place, size, rotate, and save planned structures, then see the shadows they would add beside the existing terrain and buildings.
Detailed comparison
How terrain shadows look in practice
SunCast. SunCast renders terrain shadows as part of the landscape view. That makes it easier to read the shape and edge of shade across a ridge, valley, hillside, garden, trail, or camera position. When the question is whether a particular spot will be in sun or shade, the detailed terrain view gives more context than a general shaded-area indication.
Sunlitt. Sunlitt includes Landform Shadows in its Shadow Map, so users can account for hills, valleys, and mountains when checking sunlight at a selected date, time, and location. Its map view is useful for quickly identifying broadly sunlit and shaded terrain. SunCast is the better fit when you need to inspect the finer shape and movement of the shadow itself.
Planning depth and Apple device reach
SunCast. SunCast combines a Street View sun path with Construction Mode, so you can scout a location remotely or test how adjustable planned structures would change its sunlight and shade. The workflow fits a property viewing, photo scout, garden, hike, campsite, or early site study where the surrounding landscape determines whether the expected light is usable. Solar Info can add a mapped building's roof potential and estimated output to a property check.
Sunlitt. Sunlitt supports map and AR planning at a selected location. It does not include a Street View sun-path workflow or user-placed structures for simulating a proposed building's shadows. Sunlitt runs across iPhone, iPad, Apple Watch, Mac, and Vision Pro, with widgets, Live Activities, App Intents, and shortcuts for following sun information across devices.
From the plan to the moment
SunCast. SunCast can set native alarms for sunrise, sunset, golden hour, blue hour, twilight, solar noon, and other solar events, including time-critical wake-ups. Once the map or AR view reveals the right time, Solar Alarm carries that decision through to the actual day instead of leaving it as a time to remember.
Sunlitt. Sunlitt surfaces sun information through notifications, Live Activities, widgets, and its Apple-device integrations, which is useful for keeping current conditions visible. Choose Sunlitt when glanceable Apple-device updates are the priority. Choose SunCast when you need a selected solar event to become a dedicated alarm or wake-up.
Bottom line
SunCast is the stronger choice when a real location drives the decision. It brings detailed terrain shadows, Street View remote scouting, adjustable planned structures, AR, map planning, cloud cover, and native Solar Alarms into one workflow. Sunlitt remains a strong Apple ecosystem alternative for users who prioritize its broader device support and glanceable sun information.
Try SunCast
SunCast combines AR sun path, 3D shadows, street-view scouting, cloud cover, Construction Mode, and Solar Alarm for iPhone and iPad sunlight planning.
Frequently asked questions
Can I scout a location remotely?
SunCast lets you view the Sun path in Street View, giving a ground-level perspective before you arrive. Sunlitt supports remote map planning at a selected location, but does not include a Street View sun-path workflow.
Can I plan for a future building or other structure?
SunCast's Construction Mode lets you add adjustable 3D structures and see the shadows they would introduce. Sunlitt does not include user-placed structure simulation.
Should I choose SunCast or Sunlitt?
Choose SunCast for detailed terrain-shadow inspection, Construction Mode, Street View scouting, hourly cloud cover, and native Solar Alarms on iPhone and iPad. Choose Sunlitt when its Apple Watch, Mac, Vision Pro, widgets, Live Activities, and shortcuts are more important to your workflow.
