Guides that climb the way Kotlin code does.
Nuvyreqox writes PDF guides to Kotlin — from your first script to generics, inline functions, and multiplatform code. Each guide names exactly what it covers, and nothing it doesn't.
Written for readers, not for launches.
Nuvyreqox started as internal onboarding notes for developers moving from Java to Kotlin, written because most tutorials either treated Kotlin as "Java with less typing" or jumped straight to coroutines without covering the fundamentals. Every guide is a standalone PDF: real code, explained in order, with no chapter that exists just to pad the page count. We don't publish anything we wouldn't hand to someone joining our own team.
Ten guides, in the order most readers use them.
What you actually get.
One PDF, yours to keep
Every guide is delivered as a single downloadable PDF. No account, no app, no subscription to cancel.
Content lists, not blurbs
Every product page lists the actual modules inside the guide, so you know what you're paying for before you buy.
Fixed, listed prices
Prices don't move around a countdown timer. What's on the page is what you pay.
Start free, go deeper later
The Free Session is a genuine starting point, not a sales page. There's no obligation to buy anything after it.
Frequently asked
What format do the guides come in?+
Every guide is a PDF. You'll get a download link after payment, and the same link is emailed to you as a backup.
Do I need to read them in order?+
No, but they're written that way. Each guide builds on ideas from earlier ones, so if you're new to Kotlin, starting with the Free Session will make the later ones easier going.
Do I need Java experience first?+
No. The early guides don't assume Java knowledge. If you do come from Java, a few guides call out where Kotlin behaves differently, since that's usually where the surprises are.
How do I pay?+
Each product's "Buy" button takes you to a secure payment page for that guide. Once payment is confirmed, you'll get your download link.
What if I'm not happy with a guide?+
See our refund policy for the specifics and how to get in touch.