crackoncloud
Independent app studio

Apps for the phone you already have.

crackoncloud builds players, readers, training logs, puzzle games and screen time tools for Android and iOS. Your music, video and books stay where they are — on the device or in Google Drive, Dropbox, OneDrive, Box and pCloud — and everything works without an account.

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Apps

Two media players, an e-reader, a gym log, two puzzle games and a screen time app, built for the phone you already have.

Shadow Reader app icon

Shadow Reader

E-reader with read-aloud · Android

Every book you own, read or listened to. EPUB, PDF, comics and office documents from folders you already have, with a voice that follows the words and your place kept on every device.

  • EPUB, PDF, CBZ, MOBI, FB2, DOCX, ODT and more
  • Sentence-synced read-aloud, free for everybody
  • Background playback and sleep timer
  • Highlights, notes and bookmarks that export
  • Fonts, themes, e-ink mode and gestures
  • OPDS catalogues and watched folders
  • Cloud sources and sync through your own storage (Pro)
  • No account, no ads, one-time Pro unlock
Google Play Website
Ruk app icon

Ruk

App blocker & screen time · Android

A few deliberate seconds between the impulse and the feed. Ruk pauses the apps that take your day, holds them to a daily limit or a schedule, and shows you afterwards what you took back.

  • A breathing pause before an app opens
  • Daily screen time limits, per app or per group
  • Schedules, including across midnight
  • Focus sessions with an allow list
  • Feed blocking (experimental)
  • Strict mode and the attention budget
  • Real screen time insights and export
  • No account, no ads, nothing sent anywhere
Google Play Website
AtomFit app icon

AtomFit

Gym log & workout tracker · Android and Wear OS

A gym log for people who lift. One tap per set, a rest timer that keeps running with the screen off, and multi-week programs that know what comes next — all of it offline, with no account to make.

  • Numeric keypad, prefilled with last session
  • Rest, set and interval timers that survive the screen off
  • 962 exercises, plus every one you add
  • Programs, progression rules and deload weeks
  • Records, charts, weekly sets per muscle
  • Wear OS, widgets, Health Connect, heart-rate straps
  • Sync through your own Google Drive (Pro)
  • No account, no ads, one-time Pro unlock
Google Play Website
Slatework app icon

Slatework

13 logic puzzles · Android and iOS

Killer Sudoku, Kakuro, Slitherlink, Hashi and nine more, generated on your phone rather than downloaded. Every board has exactly one answer and can be reasoned to the end without guessing.

  • 13 classic types, all in the first release
  • Unlimited boards, generated on the device
  • One answer each, proved before the board is drawn
  • No guessing at any stated difficulty
  • Hints that give the next real deduction
  • A daily puzzle in every type, derived from the date
  • Undo, autosave, pencil marks and six board palettes
  • No account, no ads, one-time unlock
Google Play App Store Website
Gulp app icon

Gulp

Snake eat snake puzzle · Android and iOS

Tap a snake and it slides until something stops it. If its head reaches another snake's tail it swallows it whole, becomes one longer snake, and inherits that snake's heading. One tap is the only control.

  • Chapters of thirty levels, walked as one journey
  • Every board generated and answered by a solver first
  • A daily puzzle built from the date, offline
  • Endless boards in four bands, made on the phone
  • Hints that show the next real tap, not the answer
  • No timers, no lives, and unlimited undo
  • Six snake skins, and boards from paper to full black
  • No account, no sign-in, one-time unlock
Google Play App Store Website
Quill app icon

Quill

8 word puzzles · Android and iOS

Word search, a letter wheel, word ladders, a seven-letter hive, a letter grid, fill-ins, ciphers and a daily five-letter guess. Every puzzle is generated on your phone from a tiered English lexicon and graded before you see it.

  • Eight puzzle types, all free to play
  • Every puzzle made on the device, from a real dictionary
  • A daily Post of eight, built from the date, offline
  • A streak with earned freezes, kept by the calendar
  • Unlimited Check, Undo, Restart and Shuffle
  • No ads, no energy, no timer you did not ask for
  • Two looks: glass over living scenes, or a rendered desk
  • No account, no sign-in, one-time unlock
App Store Website
Ruff app icon

Ruff

Hearts, Spades, Euchre, Whist, Oh Hell and Bid Whist · Android and iOS

Six trick-taking games at one table of two to five seats, with one AI for every seat: a partner that covers your nil and never trumps your winner, every deal sealed before it is dealt and checkable after, and every house rule as a switch.

  • All six games free, at every target
  • Sealed deals: the computer never sees your cards, and you can prove it
  • A Coach that shows the expert's card and why
  • A Daily scored against the expert on the same deals
  • A 300-match Tour, and Pass & Play for up to five
  • Every house rule you argue about, as a switch
  • No ads, no coins, no timer, offline
  • No account, no sign-in, one-time unlock
App Store Website
Sapper app icon

Sapper

No-guess minesweeper · Android and iOS

Minesweeper that never makes you guess: every No-guess board is certified solvable by logic before you see it and rated by the thinking it needs, on square, hex, triangle, knight and torus boards.

  • The classic game free: Beginner, Intermediate and Expert on square and hex
  • No 50/50s, and bands rated by technique, not mine count
  • A long-press that can never fire a reveal
  • 3BV and 3BV/s on every result, and a history never deleted
  • A daily board, and a 1,200-board ladder
  • Hints that show the numbers that prove the move
  • No ads, offline, no account
  • One-time unlock, not a subscription
Website
Thwack app icon

Thwack

Car crash test puzzle · Android and iOS

Swing the ramp, hold the pedal, let go: a hatchback, a cow or a grand piano flies into something built to fall down, and the wreck is scored in dollars of damage. Every level ships only once a winning shot is proven to exist.

  • Ramps, cranes, catapults, bungees, a firework rail and a diving board
  • Cars, farm animals and pianos, each with a trick on one tap
  • The Junkyard, the Farm and the Suburbs, on one road of levels
  • A Ghost that shows where winning shots are, not the shot
  • A Daily challenge, and a Test Yard sandbox
  • No lives, no energy, no coins
  • Offline, no account, landscape on phones and tablets
  • Free to play; one unlock removes the ads between levels
Website
Spiral Player app icon

Spiral Player

Cloud & offline music player · Android and iOS

A music player for the library you already have. Play local files or stream from your cloud drives, with lossless audio, a real equalizer and themes you can bend to taste.

  • Google Drive, Dropbox, OneDrive, Box, pCloud
  • FLAC and lossless audio support
  • 5-band equalizer with presets
  • Embedded lyrics and visualizers
  • Unlimited theme customization
  • Sleep timer, shuffle, repeat, quick search
  • Backup and restore
  • Adjustable playback speed (Pro)
Google Play App Store Website
Vot Player app icon

Vot Player

Cloud & offline video player · Android

Play any video, anywhere it lives. Stream from your cloud drives or open local files offline, with subtitle control, picture-in-picture and an equalizer with volume boost.

  • Google Drive, Dropbox, OneDrive, Box, pCloud
  • Offline playback of popular formats
  • Custom subtitles with styling controls
  • Picture-in-picture and background play
  • Audio equalizer with volume boost
  • Playlists, bookmarks and blacklist
  • Light, dark and night themes
  • Adjustable playback speed (Pro)
Google Play Website

About

crackoncloud is a small independent studio building apps for Android and iOS — media players, an e-reader and a screen time tool. The apps are free to use, with an optional Pro upgrade.

Your files, your storage

Folders on the device and drives you already pay for. Connect an account once and browse it like local storage.

Works offline

No connection, no problem. Local files open with the full feature set, nothing gated behind a network.

Yours to shape

Themes, equalizers, subtitles, fonts, playback speed, blocking rules — the details are settings, not opinions.

Contact & support

Bug reports, feature requests and Pro questions go to the app's support address.