Experimental Android apps,
built for learning and fun

Our apps

ExperimentApps Installer

All our apps and games in one list. Download, verify and install or update them in one tap — every file is checked before Android installs it.

FileDeck

A file explorer for your phone, tablet or Chromebook that also opens your NAS, SFTP, FTP, WebDAV and Windows shares. Copy files between any two places.

Keystroke Sender

Turn your Android device into a USB or Bluetooth keyboard and mouse that can "type" scripted keystrokes into a connected PC — no software needed on the PC.

LED Ticker

Turn your phone into a scrolling LED sign. Tap phones together to build one long display that scrolls from screen to screen.

Light Editor

A light text editor for notes, scripts and Markdown: syntax highlighting, search and replace, preview and printing — with no permissions and no internet access.

Media Viewer

A private, offline photo and video viewer. Browse your folders as collections, swipe and zoom — with no internet access and no permissions needed.

NetScope

A local network analyzer: find every device on your Wi-Fi, then ping, trace, scan ports, look up DNS and wake computers — without any cloud service.

NetWarden

See which apps connect to what, and block addresses, domains, URLs or whole apps. A firewall that runs as a local VPN on your own phone.

Off

No screens, just an icon: tap it to turn off and lock your phone in one go, so the next unlock asks for your PIN code.

Offline Recorder

Record in the background, turn speech into text and make shorter, cleaner copies — entirely on your phone, without internet access.

PDF Viewer

A private PDF viewer that also opens Word, Excel and PowerPoint files by converting them on your phone. Search, copy text and print — with no permissions.

Pocket NAS

Turn your Android phone into a small, secure network drive. Share a USB drive or internal storage with your computers over Wi-Fi, a USB cable or a private Wi-Fi.

SFTP Studio

An SFTP, FTP and SSH server and client in one app. Share folders from your phone with any computer, or connect to your web host or NAS.

SyncDeck

Folder sync and backup to a USB drive, a NAS or another computer — on a schedule, in the background, with safety checks built in.

Tag Actions

Link any NFC tag to one or more actions. Scan the tag and its actions run — Bluetooth, volume, Do Not Disturb, smart home and more — even when the app is closed.

Tether

Remote control for your computers: see and operate a Windows, macOS or Linux desktop over VNC, or open a terminal or PowerShell over SSH.

Our games

All our games work fully offline and request no permissions at all.

2048

Slide, merge and reach the big tile. Four board sizes, hints, unlimited undo and a danger indicator that looks ahead for you.

Chess Puzzles

605 proven mate-in-1 to mate-in-4 puzzles on a wooden board, in five levels, with themed training and fresh puzzles made on your phone.

FreeCell

All cards face up, with 2 to 4 free cells. The numbered deals match classic Windows FreeCell, so game #1 is the one you remember.

Hex Marbles

An offline, turn-based strategy game. Claim hexagonal tiles with marbles, grow them, and push the computer players off the board.

Hitori

Shade the duplicate numbers and keep the rest connected. A Japanese logic puzzle with hints that explain why.

Mahjong

The classic tile-matching game with five layouts. Remove pairs of free tiles — a light warns you the moment you play into a dead end.

Make Ten

An offline number puzzle: swipe through touching numbers that add up to exactly 10. Long chains score big. Two modes and four difficulty levels.

Marble Maze

Tilt your phone and roll the marble through a wooden maze into the hole. Every maze is solvable; play by tilting, swiping or with buttons.

Nonogram

Fill the grid by the numbers and reveal a picture. 85 hand-drawn puzzles in four sizes, with a gallery of everything you have solved.

Number Match

Cross out pairs of equal numbers or numbers that add up to 10, and clear the board. Four difficulty levels and hints that never lead into a dead end.

Solitaire

The classic Klondike card game with draw 1 or draw 3. A built-in solver tells you whether the game can still be won.

Spider Solitaire

The two-deck patience game with 1, 2 or 4 suits. Every deal is checked to be winnable before it is dealt.

Sudoku

The classic number puzzle with four difficulty levels, quick pen and pencil input, and a dot that tells you whether every digit is still correct.

Tilt Pop

Turn your phone and all blocks fall. Groups of the same color pop in chain reactions — can you empty the whole screen?

TriPeaks

Clear three peaks of cards by playing one higher or one lower. Build long streaks without drawing for the biggest scores.

Our Windows applications

Programs for your PC, delivered as a zip file: unpack and run, no installer needed.

AI OS Controller

Ask your computer questions in plain language. Gemini, Claude or a local Ollama model diagnoses your PC by running commands — always with your approval.

Disk Toolkit

Index your drives, find duplicate files across all of them, and clean up with a PowerShell script that checks every file before deleting it.

…

More coming

This is where our next experiment will appear. We build in our spare time, so new apps arrive when they are ready.

What we stand for

• Privacy first. Our apps do not collect usage data or personal information, and never send anything to us.
• No cookies, no trackers — on this website or in our apps.
• Free to use. We never ask for money or in-app purchases. (If you use a cloud AI in AI OS Controller, that provider may charge for its API.)
• Transparent permissions. Every app page lists exactly which permissions the app asks for, and why.
• Experimental by nature. These are hobby projects shared for learning and fun.

Explore our apps →   Explore our games →   Windows applications →