OCSI App vs First Light
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OCSI App
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Stay Connected with OCSI! Access everything you need in one place with the official OCSI app. Designed for parents, students, and teachers, this app connects you directly to the OCSI Portal powered by Veracross, giving each user access based on their school role. Key Features: • View schedules, assignments, and grades • Receive announcements and school updates • Submit or record attendance • Access your digital school ID and QR code • Find quick links to resources, staff directory, and athletics information The OCSI app provides a secure and convenient way for the entire school community to stay informed and engaged. Whether you are a parent, student, or teacher, the tools you need are right at your fingertips. Download today and stay connected with OCSI.
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 device support: OCSI App at 3 against First Light's 1. OCSI App also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases 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.
OCSI App ships an update every 5 weeks, First Light every 3 weeks. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.
| Parameter | OCSI App | First Light |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Okinawa Christian School International | Thomas Sola |
In-app purchases
OCSI App
No in-app purchases
First Light
No in-app purchases
Questions
Is OCSI App free?
Is First Light free?
Do OCSI App or First Light have ads?
Which is updated more often, OCSI App or First Light?
Other comparisons
