Vasa Serafin

Google Play developer

Offline-first tools
& thoughtful play

Science-accurate education, PDF productivity, local nursery monitoring, and a new line of live board games — built for clarity, craft, and calm premium UI.

Explore apps Open Play profile
Offline-firstCore features without forced accounts
On-deviceAI opponents that stay private
Fair IAPRemove ads · optional cosmetics

On Google Play

Live titles you can install today.

Education

Atomarium

Periodic table, 3D atoms & molecules, multi-species sandbox — science-first.

  • 3D
  • Offline
  • Sandbox
Get on Google Play →
Utility

PageStitch PDF

Merge, arrange, and edit pages offline — PDF toolkit with QR tools when you need them.

  • PDF
  • Offline
  • Productivity
Get on Google Play →
Utility

Nurso

Local Wi‑Fi Direct nursery monitor — host & camera, soothing sounds, live room view.

  • Wi‑Fi Direct
  • Local
  • Family
Get on Google Play →
Utility

QRStitch

QR generation and stitching utilities for creators and offline workflows.

  • QR
  • Offline
Get on Google Play →

Live board games

Coming soon — strategy with saved crews, light RPG, and true campaign endings.

Coming soon

Crownpath

Live Chess · Standard & Adventure

Classical chess vs adaptive AI, plus a depth-wise adventure with gear, auras, hazardous tiles, and a true ending against the Hollow King.

  • Chess
  • 3D boards
  • Campaign
Coming soon

Skystack

Live Connect Four · Climb the Tower

Drop discs in classic mode, then climb upward floors with saved champions, special discs, and sky biomes.

  • Connect Four
  • Tower climb
  • Family
Coming soon

Leapward

Live Checkers · Sky Terraces

American checkers vs adaptive AI, then leap up floating terraces with saved jumpers and power hops.

  • Checkers
  • Terraces
  • Campaign

Characters save between games. Optional rewarded ads fund research speed-ups — never required to finish the story.

About

Official developer site for Google Play apps by Vasa Serafin. Focused on science-accurate education, offline productivity, local-first family tools, and carefully designed board games.

We prefer on-device logic, clear interfaces, and monetization that removes ads or adds cosmetics — not paywalls over the ending of a campaign.

Principles

  • Offline-capable cores
  • On-device opponents (no cloud chess bots)
  • True campaign endings + optional extras
  • Same craft as Atomarium & PageStitch

Contact

Questions about apps, privacy, or Play listings.

vasa_serafin@hotmail.com

For AdMob app-ads.txt, see /app-ads.txt on this domain.