The five things Premium adds.
These are the features that ship with Premium today. There's nothing promised or "coming soon" in this list — it's what you'd see if you upgraded right now.
Live cloud cover, daily.
Sunline fetches recent satellite cloud imagery and bakes it into a clean cloud mask so the underlying Earth still reads cleanly. Real-time mode only — in time simulation, the bundled demo image is used (because there is no "today" to fetch). Fails gracefully to the cached image or the bundled one if the network is down.
Seasonal Earth textures.
Twelve monthly NASA Blue Marble textures. The app picks the one that matches the current month — or the month in your simulation — so the Sahara expands in summer, the Arctic recedes, the northern forests turn green. Off by default; turn it on in Settings → What's Displayed.
Political time zones.
The real IANA ("Olson") time zones layered on top of the Earth — the jagged borders countries actually use, including the half-hour and quarter-hour offsets, the small islands and the historical anomalies. Toggle it on alongside (or instead of) the simpler 15° geographic bands.
The simulation shuttle.
In simulation mode, the on-map Simulation Player gets a horizontal shuttle track under its play / pause bubble. Drag the thumb left to rewind, right to fast-forward; the further from centre, the faster — from one minute to one day per real second. Release and the thumb springs back. Free users keep play / pause.
The full Cloud Tuning panel.
Long-press the gear icon and a hidden panel opens with sliders for cloud day-side opacity, night-side opacity, night ambient darkness, and how brightly cloud tops glow on the night side with and without city lights. A one-tap reset returns every slider to its default.
