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• 7 instruments: crash, open hi-hat, hi-hat, cowbell, snare, kick, double bass
• Time signatures 2/4–7/4 and 5/8–12/8, over 1–4 bars
• Any mix of 16th-note and triplet slots in each cell
• 16 presets inspired by great drummers — change anything, or revert
• Tempo 40–240 BPM, master volume, per-row mute, spacebar to play and stop
• Phone layout: big play button, tempo −/+, swipeable grid, screen stays awake while playing
• iPhone: optional "Play in silent mode" (Safari 16.4 or later)
• Saved beats in your account, on every device

Optional — only to save beats

Use everything except saving beats. The Custom pattern and settings stay on this device.

Also save, rename, overwrite and delete beats

• On our server — your saved beats
• On your device — your Custom pattern, settings, and a draft of the beat you're editing

None

500 saved beats per account

None

• Four question types, each switchable: triad root/3rd/5th, mode scale degrees, fret → note, note → fret
• Root-based mode, on by default: questions start from the root
• Timed answers, streaks and a best-time record
• Note-location reference table

Not needed

Use everything

The same — no account features yet

• On our server — nothing
• On your device — quiz settings, streak and best time, in a browser cookie

None

Progress isn't saved to your account and resets if you clear cookies

None

• Pick 1–6 notes at once: name the note, the interval, or every note of a chord against its root
• Chords and single-note runs, generated fresh for every question — never a fixed list
• Voiced like Jimi Hendrix, Eric Johnson, Joe Pass, Wes Montgomery, Emily Remler, Kurt Rosenwinkel, Steve Vai or Guthrie Govan
• Every interval drill: all 24 intervals, a minor 2nd to two octaves, shuffled so each comes up once before any repeats
• The answer is shown on a fretboard, as a chord box or as tab; the neck is playable
• Real acoustic guitar recordings, one per fret
• Half speed and "show root note" helpers
• Session and all-time accuracy

Not needed

Use everything

The same — no account features yet

• On our server — nothing
• On your device — your settings and your accuracy scores

None

Scores stay on this device and aren't saved to your account

None

• Drag A and B handles along the song, save the loop, replay it any time
• Transcribe-Flow: a ready-made loop that works through a song 2 bars at a time. Move it, grow it or trim it by half its length, change its length in bars, and it reopens where you left off on each song
• Optional pause between repeats
• Song details: key, tempo, time signature and genre, where available
• Beat and bar counter, with a sync dial to line up beat 1
• Loop length shown in bars and beats
• Spotify: pick which device plays — phone, computer or speaker
• YouTube: paste a link, or search
• Home page with what's playing and every song you've saved loops for

Required

Nothing — sign in first

Use everything. Spotify needs your own Spotify Premium account.

• On our server — your saved loops, beat-sync settings and where you left Transcribe-Flow, per song, and your Spotify sign-in if you connect Spotify
• On your device — nothing

Spotify (Premium), YouTube, GetSongBPM, MusicBrainz

• Only 5 accounts in total can connect Spotify until Spotify approves wider access
• A loop is at least 2 seconds long
• YouTube search has a small daily limit shared by everyone; pasting a link always works

• Spotify controls only work while the Spotify app is open on one of your devices
• The beat counter can drift over a long song when the listed tempo is rounded

• File tree with folders; create, rename, move, duplicate and delete files (deleted files go to trash)
• Cut, copy and paste files between folders
• Name files and folders the way you like: spaces, apostrophes, &, +, brackets, accents, other scripts and emoji all work
• Files that can't be opened here, like spreadsheets and archives, can still be moved, renamed, copied and deleted
• Folders you open stay open the next time you visit
• Edit, Preview and Split views with GitHub-flavoured Markdown
• Code files too, with syntax highlighting for dozens of languages, in the editor and in Markdown code blocks
• Editing toolbar: undo, redo, cut, copy, paste, select all, find and replace
• Import images by dropping, pasting or picking them — into a folder, or straight into the file you're editing
• Ctrl+S to save; the last 20 saves of every file are kept as history
• Warns you before overwriting changes made on another device
• Storage meter, and Empty trash to free space
• Optional encryption that we can't read: unlock with this device, a storage password or a recovery key

Required

Nothing — sign in first

Keep a private space for notes, code and images that only their account can open

• On our server — your files and images, their history and trash. With encryption on, file contents are encrypted in your browser before they reach us; file and folder names are not.
• On your device — which folders you left open and your text size, kept in this browser only

None

• 1 GB of free storage per account, including saved history and trash
• File and folder names can't contain \ : * ? " < > |, can't start with a dot, and can't be longer than 255 bytes (about 255 letters, fewer in some scripts)
• Images up to 25 MB each: PNG, JPG, GIF, WebP, SVG, BMP, ICO or AVIF
• Files over 4 MB can't be opened for editing
• Encryption covers files saved after you turn it on; older files are encrypted when you next save them
• Lose every way to unlock encryption and your encrypted files can't be recovered

None

• Quick add for spending and income; create categories as you go
• Accounts: cash, bank and wallet; credit cards and loans; bank accounts with an overdraft limit
• Transfers between accounts, and balance corrections kept in history
• Insights: the month's cascade from money in to what stayed with you, plus trends
• Full log, with a confirmed, permanent bulk delete
• Export as ledger CSV, bank-statement CSV, OFX (GnuCash, Quicken) or a complete JSON backup
• Import ledger or bank CSVs and JSON backups, with a preview and duplicate check first
• Designed for phones

Required

Nothing — sign in first

Keep a private ledger no other account can see

• On our server — your accounts, categories and transactions
• On your device — nothing

None — nothing connects to your bank

• Amounts use Indian digit grouping (1,23,456.78)
• Bulk delete: up to 200 entries at a time

None

• Four sections: Up next (waiting before the start line), In progress (between the start and finish lines — as many as you like), Finished, and DNF (did not finish) for things that stopped mattering
• Each task is a short phrase — no owners, priorities or due dates, only its place in the lane
• Drag tasks anywhere, including across the start line, or use the arrow keys; finish any task in progress with one tap
• Split a task into ordered parts that stay in its section, in its place
• Add from a list: paste an outline, a checklist or a plan from an AI chat, or open a text file. The smallest items become tasks and the headings above them stay with them; notes like "depends on" put tasks in the right order. Preview before anything is added
• Copy your lane, one section, or your Finished and DNF lists to the clipboard as a numbered list
• Delete any task; undo for every move, split, delete and import
• Designed for phones

Required

Nothing — sign in first

Keep a private lane, with its finished and DNF lists, that no other account can see

• On our server — your tasks in all four sections. Tasks are not encrypted. Text you paste into Add from a list is read to build the preview and is not kept — only the tasks you add are saved.
• On your device — which of Finished or DNF you left open

None

• Up to 200 characters per task; 500 tasks across Up next and In progress; 5,000 in all
• A split makes up to 20 parts; one import adds up to 300 tasks from up to 200,000 characters (files up to 512 KB)

None

• One equal-width bar per semitone, with a keyboard strip underneath
• Sources: browser tab audio, microphone, or an audio file
• Share → Mic or Share → Tab sends audio to a room; open the page on any other device to watch it
• Chroma colouring: every C shares a colour
• Tuning detection
• Sweep: plays semitones one at a time to check the display

Not needed

Use everything

The same

• On our server — nothing; shared audio is passed through live and never recorded
• On your device — nothing

None

• Tab audio works in desktop Chrome and Edge only
• Phones can't capture other apps' audio — use the microphone, or share from a desktop tab
• Shared rooms are public: anyone on the page can pick your room and receive its audio

Sometimes offline while its host computer is off

• 12-hour analog dial with four nested rings: the outer ring is the next 12 hours, and each ring behind it is 12 hours further out
• Events from all your calendars, in their Google Calendar colours
• Google Tasks that are due appear on the dial too
• Demo mode with sample events
• Disconnect Google at any time: access is revoked at Google straight away

Required to connect your calendar — not for the demo

Try the demo with sample events

Connect their own Google Calendar and Tasks, read-only, and see them on the clock

• On our server — which Google account you connected, and Google's access token for it, encrypted. Kept until you disconnect or delete your fluidentity.cc account. Your events and tasks are read from Google each time the clock draws, and never stored
• On your device — nothing

Google Calendar and Google Tasks (read-only)

• Google is still verifying this app: when you connect, Google shows a "Google hasn't verified this app" warning, and only 100 accounts can connect until verification is done

None

https://fluidentity.cc

A small constellation of self-hosted apps, beaming from a Raspberry Pi on the desk.

First release

Aman Sangal, Pune, India

Email and password, or Google

A link is emailed when you sign up. It works for 24 hours.

A reset link is emailed and works for 1 hour. Resetting signs you out on every device.

7 days on each device

Add up to 5 more besides your primary one. Each is confirmed by a link sent to it; then it can sign you in and reset your password. Only your primary address is shown to other people, on support tickets and replies — the others stay private

Change it any time on your account page. It signs you in (with a password) and is shown on everything you write — Google sign-in users can add a password to use it

Everyone starts with their own mandala. Draw a new one, or upload a photo — it's cropped and shrunk in your browser, and its location data is removed before it reaches us

User for everyone; Contributor for people we've asked to help with support (they can see ticket details and reply on tickets); the site owner is the Admin

• Markdown Editor
• Transcribe A–B Player
• Cashcade
• TaskQueue
• Visual Time — connecting your calendar only
• Drum Metronome — saving beats only

Fretboard Quiz, Spectrum Visualiser, the Visual Time demo

Your email addresses, username, a salted hash of your password (never the password itself), your Google account link if you sign in with Google, your profile picture if you upload one, your role, your active sign-ins, and — if you turn on Markdown Editor encryption — locked copies of your key and the names of the devices you added

Email support@fluidentity.cc from your account's email address. Your account and everything in it is deleted within 30 days, and we confirm by email.

No minimum age for the apps that don't need an account. To create an account you must be 18, or have a parent or guardian's consent.

Resetting your sign-in password doesn't affect Markdown Editor encryption, which has its own ways in: a device, a storage password or a recovery key.

https://fluidentity.cc/support/privacy

https://fluidentity.cc/support/terms

• Sign-in — keeps you signed in for 7 days
• Device — an anonymous ID kept for 1 year, used to count devices online
• Security — short-lived cookies that protect sign-in forms and connecting Google or Spotify: 10 minutes or less, except Visual Time's, which ends when connecting finishes or you close the browser
• Fretboard Quiz — your quiz settings and scores

While most fluidentity.cc pages are open, they check in every 5 minutes with an anonymous device ID, your IP address and, if you're signed in, your account. Each record is deleted about an hour after the last check-in.

Your IP address, the time, the page and your browser's name for every request, deleted after 14 days

On fluidentity.cc's own server in India