Skylob vs First Light
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Skylob
Explore the vastness of the observable universe, from its immense size to the accelerating expansion driven by dark energy. Discover how our cosmological horizon is shrinking, making parts of the cosmos permanently unknowable. This app invites contemplation on our place within this cosmic immensity.
- Observable universe scale
- Dark energy and expansion
- Cosmological horizon explained
- Our place in the cosmos
- Scientific concepts simplified
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The observable universe stretches roughly 93 billion light-years across and holds an estimated one billion trillion stars. Yet the universe's expansion tells a stranger story: dark energy is accelerating galaxies away from one another at rates that exceed the speed of light, shrinking our cosmological horizon: The boundary beyond which no signal can ever reach us, to about 16 billion light-years. Beyond that threshold, the cosmos becomes permanently unknowable. And within all of that immensity, as Carl Sagan so movingly reminded us, we live on a pale blue dot. A single, fragile mote among countless heavenly bodies, most of which have never been named, let alone explored. That vastness isn't cause for despair, it's an invitation.
First Light
Explore the universe's earliest light with real cosmic microwave background data. Pan across the oldest light in the universe, switch between satellites, and observe shifts in frequency bands. This educational app brings real science and cosmic history to your mobile device.
- Explore cosmic microwave background data
- Immersive sky exploration via phone movement
- Switch between COBE, WMAP, and Planck satellites
- Adjust frequency bands to see universe shifts
- Utilizes real scientific data
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Look up. What you're seeing isn't the night sky. It's the afterglow of the Big Bang, captured by three of the most important space missions ever launched. First Light turns real cosmic microwave background data from COBE, WMAP, and Planck into an immersive sky you can explore by simply moving your phone. Pan across the oldest light in the universe. Switch between satellites. Dial through frequency bands and watch the universe shift. This is real data. Real science. And it fits in your pocket.
Screenshots
Verdict
The clearest difference is ratings volume: First Light at 3 against Skylob's 1. On price, rating, update cadence and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Skylob against 5.0 for First Light. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | Skylob | First Light |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 11 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Kyle Cheng | Thomas Sola |
Customer experience
Skylob
First Light
In-app purchases
Skylob
No in-app purchases
First Light
No in-app purchases
