Sky Across vs UnivMap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sky Across
Discover the night sky through augmented reality and explore celestial patterns from diverse cultural perspectives. Compare constellations and star names from different traditions side-by-side in multiple languages, even offline.
- Augmented reality star map
- Multicultural constellation comparison
- Dual-language star names
- Offline stargazing
- Night mode interface
- Lightweight and fast performance
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Explore the sky with your phone — anywhere, anytime. Sky Across is a lightweight, real-time stargazing tool that transforms your phone into an augmented reality star map. Just hold your iPhone towards the sky, and stars, constellations, and celestial patterns will appear on your screen. Whether you’re observing out in the field or right at home, Sky Across makes exploring the night sky effortless. Discover the night sky through diverse cultural perspectives — displaying constellations and star names from different traditions side by side, in any languages of your choice. ---------- Key Features: AR Star Map - Point your phone to the sky to see real-time overlays of stars and constellations with accurate positioning. Constellations Across Cultures - Explore how different civilizations view the night sky. Compare constellation patterns worldwide. Sky Culture Comparison - See star names in different cultures — with dual-language display side-by-side. Supports multiple translations for each sky culture. Offline and Outdoor Friendly - No internet? No problem. Sky Across works offline, perfect for outdoor trips. Night Mode & Simple Interface - Clean, minimal design with a dark theme to protect your night vision. Lightweight and Fast - Optimized for smooth performance on many devices without draining your battery. ---------- Currently version supports sky cultures: Modern (IAU) • Chinese • Greek • Arabic • Babylonian • Egyptian • Maya • Romanian • Belarusian Currently version supports each sky culture in languages: English • Chinese(Simplified) • French • Japanese • Korean • German • Spanish • Italian • Russian Currently version supports UI interface in languages: English • Chinese(Simplified) • Chinese(Traditional) • French • Japanese • Korean • German • Spanish • Italian • Russian
UnivMap
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UnivMap is a navigation app. Search for places, get directions, and check your estimated time of arrival. -Search Type in where you want to go. Alpha Centauri, the Orion Nebula, or that black hole at the center of the galaxy. -Directions Starting from your current location, UnivMap works out the distance and arrival time — and kindly routes you around interstellar pirates and high-radiation zones. To Voyager 1: 25.599 billion km, about 23 hr 43 min at the speed of light. It never stops moving, so we time it just right — it reaches the destination to meet you the moment you arrive. -Choose how you travel Rocket, car, bike, or on foot — take your pick. Drive to Mars and the route card will warn you it's uphill the whole way. -Save your places Set your Home and Work, and get directions home with a single tap. -Reviews Every place has ratings and reviews. The Moon currently holds 5.0 stars across three reviews — one visitor wrote: "That's one small step for a man, one giant leap for mankind." -Works offline No connection required. No data collected. -Search galaxies, get directions, check your ETA. The nearest neighbor is over four years away — pack snacks.
Screenshots
Verdict
The clearest difference is price: UnivMap at Free against Sky Across's $2.99. UnivMap also leads on update cadence (every 9 days vs monthly). On ads, in-app purchases, device support and iOS requirement 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
UnivMap is free to download; Sky Across costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Sky Across ships an update monthly, UnivMap every 9 days. The most recent releases landed on October 30, 2026 and October 8, 2026 respectively.
| Parameter | Sky Across | UnivMap |
|---|---|---|
| Price | $2.99 | Free — better |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 16 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Yue Liu | 宇輝資訊有限公司 |
In-app purchases
Sky Across
No in-app purchases
UnivMap
No in-app purchases









