/// OFFLINE-FIRST · NO ACCOUNT NEEDED · FREE TO USE

Offline apps. Engineered to be kept

Nyxelium builds small, calm Android tools that work offline and stay out of your way — no account to create, no clutter.

Chrono app icon
Pocket Cult app icon
Mossby app icon
Nuzzle app icon
3 — LIVE ON GOOGLE PLAY
11 — LANGUAGES
100% — FREE TO START
0 — ACCOUNTS NEEDED
Chrono icon
Chrono
Time Tracker · Tools
LIVE ON PLAY
Chrono focus timer and activity tracking screen Chrono productivity statistics screen

Stop guessing where your time goes.

A Pomodoro focus timer and full time tracker in one offline app — for freelancers logging billable hours, students structuring study sessions, and anyone doing deep work.

  • Pomodoro cycles
  • Daily & weekly analytics
  • 200+ category icons
  • CSV & calendar export
  • Home-screen widget
  • 11 languages
Get on Google Play
Pocket Cult icon
Pocket Cult
Idle RPG · Simulation
LIVE ON PLAY
Pocket Cult idle dungeon management screen Pocket Cult offline progress and resources screen

Be the bad guy. Rule from the shadows.

A tongue-in-cheek idle dungeon keeper — build an evil lair, summon a demon army, and crush the heroes who dare to raid it. Your cult works while you sleep.

  • 15 buildings, 6 tiers
  • 10 unique minions
  • Full offline progress
  • Prestige & ascension
  • No forced ads
  • 6 languages
Mossby icon
Mossby
Plant Care · Home
LIVE ON PLAY
Mossby houseplant care overview screen Mossby plant watering schedule screen

Know what needs care today, and what can wait.

A calm plant-care advisor that warns you before a plant lands in a spot that's too dark — or before you pair two plants that shouldn't share a pot.

  • Per-plant watering schedules
  • Light-aware placement
  • Pairing warnings
  • Zones, pots & catalog
  • Care streaks & history
  • Light & dark themes
Get on Google Play
Nuzzle icon
Nuzzle
Pet Care · Lifestyle
IN DEVELOPMENT
Nuzzle pet care schedule screen Nuzzle pet health timeline screen

Keep every pet healthy, gently.

The calm, offline way to stay on top of feeding, meds, grooming and vet visits — with health flags that quietly surface what needs attention.

  • Auto-scheduled reminders
  • Per-pet health timeline
  • Weight tracking
  • Household calendar
  • Works offline
Follow along →

/// GUIDES & WORKSHOP

Field notes from the same desk.

Thirty-five guides. Focus, plant care and idle-game design from the problems behind the apps—plus workshop notes on GPUs, Windows, backups and developer setup.

Browse every guide →

/// THE SPEC

Every app ships against the same contract.

Six requirements, checked before every release. If a feature breaks one of them, the feature doesn't ship.

REQ—01
Offline-first
Core features work without a connection, and the content you create stays on your device.
REQ—02
No account needed
No sign-up, no login — open the app and start. Free versions show ads and use optional, consent-based analytics.
REQ—03
Zero friction
Open and go. No forced onboarding, no dark patterns, no nagging notifications.
REQ—04
Localized
Fully translated across many languages so the apps feel native wherever you are.
REQ—05
Light & fast
Small downloads, smooth performance, accessible layouts in light and dark themes.
REQ—06
Fair pricing
Free to use, with honest optional upgrades — never a wall between you and the basics.

/// THE STUDIO

One small studio. Built in the open.

Nyxelium builds thoughtful Android apps that respect attention, data, and momentum. Every app is built with Flutter, shaped by real daily use, and refined release after release.

Have feedback or an idea? We'd genuinely love to hear it.