Comparison

Sky Across vs UnivMap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Augmented reality star map
  • Multicultural constellation comparison
  • Dual-language star names
  • Offline stargazing
  • Night mode interface
  • Lightweight and fast performance
Features
Read full description

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

About

UnivMap

Features
Read full description

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

Sky Across4 screens
UnivMap4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Sky Across ships an update monthly, UnivMap every 9 days. The most recent releases landed on October 30, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 6 level
Sky Across versus UnivMap: the parameters behind the verdict, then further details
ParameterSky AcrossUnivMap
Price$2.99Free — better
Positive reviews100.0% of reviews—
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size16 MB31 MB
Age rating4+4+
DeveloperYue Liu宇輝資訊有限公司

In-app purchases

None

Sky Across

No in-app purchases

None

UnivMap

No in-app purchases

Questions

Is Sky Across free?
Sky Across costs $2.99, with no in-app purchases.
Is UnivMap free?
UnivMap is free to download, with no in-app purchases.
Do Sky Across or UnivMap have ads?
Neither Sky Across nor UnivMap shows ads.
Which is updated more often, Sky Across or UnivMap?
Sky Across ships an update monthly, and UnivMap every 9 days. Most recently, Sky Across was updated on October 30, 2026 and UnivMap on October 8, 2026.

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