# Solis: Sun & Moon — Daylight & Lunar Instrument

> Daylight & Lunar Instrument (iPhone/iPad app by Jiajia Zhang.)

- Source: https://appshunter.io/ios/app/solis-sun-and-moon/id6770580536 (this page in markdown: same URL + `.md`)
- Developer: [Jiajia Zhang](https://appshunter.io/developer/1896755122)
- Category: Weather, Reference
- Price: $3.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 35 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-10-09
- Data updated: 2026-10-11

## What is Solis?

Solis is a precision sun and moon almanac for observing natural light. Follow the Sun, Moon, twilight, seasons, and celestial paths from one calm iPhone experience.

TODAY
See sunrise, solar noon, sunset, golden hour, civil twilight, current solar elevation, weather context, and the day’s changing light.

MOON
Explore a monthly moon calendar with realistic illuminated phases, zodiac transitions, rise and set times, and precise lunar ephemerides.

YEAR
Understand annual daylight rhythm, solstices and equinoxes, daily daylight change, solar paths, and seasonal light patterns.

CELESTIAL SKY AR
Open the camera to align Sun and Moon trajectories with the real sky. Use the Quick Time precision ruler to move through the day and inspect celestial positions at specific times.

EARTHLIGHT
Explore Earth’s day-and-night terminator and seasonal axial tilt with an interactive 3D globe.

WIDGETS
Keep useful solar and lunar context visible from the iPhone Home Screen.

SOLIS FULL
An optional one-time purchase unlocks Earthlight Year mode, its four-season comparison, and four Pro app icon editions: Dawn Horizon, Golden Hour, Eclipse Obsidian, and Aurora Borealis. No subscription. The main Solis experience remains available without purchase.

PRIVACY
No ads and no third-party analytics. Astronomy calculations, saved locations, and preferences are handled on device. Solis uses Apple services for weather, maps and geocoding, purchases, and system permissions when those features are used.

Designed for photographers, travelers, astronomers, architects, and anyone who plans life around natural light.

## Pricing and in-app purchases

Base price: $3.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Solis Full | $4.99 | one-time |


## Is Solis safe?

Not enough ratings yet to assess Solis.

## Is Solis legit?

Solis: Sun & Moon has limited verification signals. The AppsHunter Legitimacy Score for Solis is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.2 — 2026-10-10

Refined light and atmospheric rendering in SkyNow, including sun halo, twilight beams, and celestial path glow.

### 1.0.1 — 2026-10-09

No release notes.

## More apps by Jiajia Zhang

- [Punctum – Dot-Matrix Clock](https://appshunter.io/ios/app/punctum-dot-matrix-clock/id6819719995)

All apps by Jiajia Zhang: https://appshunter.io/developer/1896755122

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*