# Sky Across vs UnivMap

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.

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.

## The numbers

| Metric | Sky Across | UnivMap |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Paid | — |
| Size | 16 MB | 31 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yue Liu](https://appshunter.io/developer/1818433170) | [宇輝資訊有限公司](https://appshunter.io/developer/1888426874) |

## What reviewers say

### Sky Across

[App page](https://appshunter.io/ios/app/sky-acrossmulticultural-stars/id6746770709)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### UnivMap

[App page](https://appshunter.io/ios/app/univmap/id6806794531)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*