Your Rap Lyrics,
Color-Coded as You Type.
Write a bar and the rhymes light up in matching colors, the syllable count runs live under every line, and the AI writes back in your vibe.
Free covers one song with three sections and unlimited bars inside it, plus 15 AI Credits every 30 days. Rhyme colors and the Pro tools light up the first 12 bars of your first section so you can see them work, then the text stays plain until you upgrade. See what Pro adds.
What Happens to Your Rhymes as You Type?
RhymeFlux colors the rhymes in your verse while you write, matching them by sound rather than spelling, so words that rhyme to the ear share a color even when they look nothing alike. Most rhyming sites only catch the easy ones like "cat" and "hat." Works for US, UK, Australian, and Canadian English. See it on your own bars with the free rhyme scheme analyzer.
Real-Time Rhyme Highlighting
Color-codes every rhyme family in your bars as you type. "Incredible" matches "unforgettable" because it hears what standard dictionaries can't. Pick how strict the rhyme detection is. Four modes: None, Strict, Rap, or Loose.
Sound-Based Matching
It ignores spelling and matches on vowel sounds. "Time" rhymes with "Mine," "God" with "Fraud," "veins" with "brain". It hears the way rappers actually say words.
Internal & Slant Rhymes
Spots mini-rhymes hiding inside your lines and catches the loose rhymes rappers actually use, like "banged" with "slang" or "darkness" with "shark."
Rap Slang Map
RhymeFlux knows "jawn," "Glizzy," "Henny," "Bape," "K-Dot," "Drizzy," and many more rap-specific words across a wide range of categories. It rhymes the way you actually spit.
Does the App Count Your Syllables Live?
Yes. The count runs live under every line as you type, so you catch a bar running long before you ever try to rap it. If your flow keeps sliding off the drums, our guide to staying on beat breaks down why.
Live Syllable Counter
See your syllable count update in real time as you type. It handles acronyms ("FBI" = 3), counts spoken-out numbers, and ignores ad-libs in parentheses automatically. Try the same counter free in the rap syllable counter.
Beat Grid
A strip under every line that weighs the bar against the rest of its section. Four syllables of drift turns it amber, six turns it red, so you can see the bar that does not fit without counting a thing.
Rhythm Shift Warning
If your syllable count jumps by more than 5 between lines, the app pulses a soft warning so you can hear that your rhythm just shifted.
Color-Coded Flow
Each line gets a color based on how packed it is. Light flow, dense flow, or overflow. You can spot a stuffed bar at a glance.
Pull up in the foreign, gang slidin' on a wave
How Do You Find a Rhyme Inside RhymeFlux?
Type a word into the Rhyme Finder and you get hundreds of matches back, sorted by how many syllables they have. Tap one and it lands right in the line you're writing. Hunting multis for a punchline? The multisyllabic rhyme guide shows how to chain them.
Grouped by Syllable Count
Need a 1-syllable end-rhyme? Or a multi for a punchline? Each result group splits by syllable count so you grab the right kind of rhyme for your flow.
Tap to Drop It In
See a rhyme you like? Tap it. It drops straight into the bar you were writing. No copy-paste, no leaving the canvas.
AI Backup If You Need It
If the local matches run dry, an "Ask AI" button pulls more vibe-tuned rhymes from the AI. Costs 1 Credit, but only when you actually want it.
What Are Ghost Rhymes?
Ghost Rhymes are faint suggestions that sit on an empty line, showing rhymes that would fit the bar you just wrote. Read them. Steal one. Or use them as a launchpad to write your own.
Free, Forever
No AI Credits used. The same logic that lights up your typed bars is the one suggesting rhymes here.
Vibe-Aware
Suggestions are ranked against your last bar and your active vibe. Trap pulls trap-friendly rhymes. Drill style pulls darker ones.
Always Cycling
Every few seconds, a new suggestion fades in. Don't like one? Wait. Another's coming.
Stays Out of the Way
Faint italic text, never loud or in-your-face. They're hints, not commands. Type over them whenever you want.
What Does the AI Co-Writer Do?
The AI Co-Writer reads the bars you have already written and hands you options in the same vibe. You stay in charge of what stays. This isn't a generic chatbot. It's built for rap, with vibe profiles we wrote in-house for Trap, Drill, Lyrical, and Melodic, so the bars land in your lane instead of reading like generic filler.
Write or Rewrite
Empty line? The AI writes a bar for you. Three ways: finish the rhyme you started, try a new rhyme pattern, or match the same syllable count as the line above. Already wrote one? It can rewrite it harder.
Pick Your Vibe
Set the style before you write. Trap = luxury brands and triplet flows. Drill style = dark energy and choppy bars. Lyrical = layered rhymes and big metaphors. Melodic = singable hooks and emotional vibes.
Tap-Any-Word Suggestions
Tap any word. A popup opens with three columns. Rhymes from RhymeFlux (free, always). Word swaps that fit your vibe. Multi-word rhyme phrases that replace the whole tail of the bar.
God Prompt
Stuck staring at a blank section? God Prompt gives you 3 distinct opening bars in three angles: Straight, Metaphor, or Punch. They're built off your vibe and the rest of your song, and it figures out on its own if it's a verse, hook, bridge, or outro. Pick the one that hits and keep writing.
Type Bar 2… Stack the bag in cash, watch the bank take Bag stacked up like the vault gon' take
savage…
Can You Record a Take Inside the App?
Yes. Hit record on any line and the take saves attached to the bar you wrote it on, while the words are still fresh. No more 50 voice memos named "New Recording 4."
Stack Takes Per Line
Pro stacks up to 10 takes on a bar. Try the same line ten different ways. Compare them in seconds.
Auto-Play Your Favorite
Mark a take as Active and it plays back the moment you focus that line. Like a vocal guide for the next bar.
Live Timer & Scrubber
See how long you've been recording. Drag the playback bar to any moment. Rename takes so you know which is which.
Works in Every Browser
Chrome, Safari, Firefox, on phone or laptop. We pick the right audio format for your device so it just works. Your lyrics sync everywhere, but a take stays on the device that recorded it, so export one if it needs to travel.
Studio
Six features in. Open the studio and use one.
Start Writing FreeWhat Is the Booth Teleprompter?
The Booth Teleprompter fills your screen with your lyrics in text big enough to read at arm's length, scrolling at your beat's speed. Switch to it when the writing is done and the reading starts. Made for the booth, the stage, or the back of an Uber on the way to the studio.
Big, Adjustable Text
Set the font from 14 to 64 pixels. Read it from across the booth without squinting.
Auto-Scroll at Your Tempo
Set the scroll speed in BPM to match your beat. The lyrics roll past you exactly when you need them.
Screen Stays On
No more tapping the screen mid-take to keep it awake. RhymeFlux keeps it on for the whole session.
Works Offline
Phone signal dies in the basement studio? Doesn't matter. The Booth Teleprompter works with zero Wi-Fi.
Late nights in the lab,
every bar designed for damage
Day-ones in the cab,
fake ones tryna manage
Can You Keep Two Versions of the Same Bar?
Yes. Tap the AI button and RhymeFlux saves a polished draft next to your original, on the same line, so you never trade one for the other. Flip between them in the booth and roll with whichever one hits hardest.
Drafts Stack Per Line
Each line keeps its own stack of drafts. Open the "1/2" dropdown next to the bar to see all the versions you've tried.
One Tap to Switch
Use the arrow buttons or pick from the dropdown. The bar updates instantly. Read both out loud before you commit.
Never Lose the First One
Pick the polished draft and your original stays in the stack. Change your mind later? Switch back in one tap.
Stack As Many As You Want
Try three angles, six, ten. Cycle through every draft when you're ready to lock in the final bar.
I hold the throne, every threat made me older
2Swipe to switch drafts
older — bolder...
Type Bar 6… or double-tap any word
Free on one song, no card, nothing to install.
Start Writing FreeWhat Else Is Built Into RhymeFlux?
Six more tools sit around the writing canvas: a Focus Timer, a Built-In Beat Player, Structure Mode, Full Song View, a daily streak counter, and the Concept Roller.
Focus Timer
Pomodoro presets (5, 10, 15, 20, or 25 min) with a chime when time's up and a red pulse in the last 5 minutes. Lock in and finish a 16-bar verse in one sitting.
Built-In Beat Player
Loop YouTube beats or drop in your own MP3, WAV, or M4A file. Mobile-friendly. No YouTube Premium needed to keep the beat playing while you write.
Structure Mode
Drag whole verses, hooks, and bridges to rearrange your song. Move bars between sections without rewriting a single line.
Full Song View
See all your verses and hooks in one long list. Perfect for a top-to-bottom performance run. Edit everything in one place.
Daily Streak Counter
Write at least one bar today and the streak counter ticks up. Miss a day, it resets. Keeps you in the booth even when life gets busy.
Concept Roller
Stuck on what to write about? Roll the dice. The app gives you a random topic and a handful of keywords to spark a verse. Free, no Credits needed.
That is every tool. Go write a bar with them.
Start Writing FreeWhat Happens to Your Bars if the App Closes?
Nothing is lost. RhymeFlux saves every keystroke straight to your device as you type, then syncs it to your account, so a crash, a dead battery, or a closed tab does not cost you a line.
Auto-Save Every Keystroke
Every word you type saves straight to your device. It stays there for good, not in a temporary holding spot. Browser crash? Battery dies? Your bars are still there.
Offline Writing
Work with zero Wi-Fi, on every plan, with no time limit. Everything syncs back the second you're online. Write on planes, in basement studios, or on tour.
Cloud Sync
Open your project on any device (laptop, tablet, phone) and pick up right where you left off. Edit on your laptop and your phone at the same time, and both sets of changes stick. No overwrites.
The Recycle Bin
Deleted a bar by mistake? It goes to the bin, not the void. Restore any deleted song, section, or line exactly where it was.
How Do You Get Your Lyrics Out of RhymeFlux?
Three ways, all built in: a ready-to-post image for Instagram, a plain text download of the whole song, and a backup file holding everything you have ever written. When the verse is ready for the world, send it where you need it.
Instagram-Ready PNG
One tap gives you a polished 1080×1350 image of your bars in the RhymeFlux style. Post to your story, your group chat, or anywhere else. The Share button is in your phone's native menu.
Plain Text Download
Download your whole song as a .txt file. Drop it into Notes, email it to your producer, or print it out for the booth. Grouped by song and section so nothing gets lost.
Take Everything With You
Download every bar, version and section you have ever written, in one file. Load it back into any account whenever you want. Free for everyone.
What writers are saying
Actually useful
Been using Apple notes for years but this is way better. It counts syllables and highlights rhymes which actually helps you stay in the pocket before you even record. Good looks
helps me kill my writer's block
Dope app. Word suggestions give you actual slang and slant rhymes instead of just cheesy words like other dictionary apps. helps a lot when I get stuck on a bar. And I like a clean dark design too
Actually gets it
organizes my verses way better and the rhyme highlighter is actually legit. definitely recommend if u record a lot
this app really helpfull to me bru its forsure a must need when u making music bru js to make sure ur lyrics are sharp and onpoint bru ... thanku to luke for helping the music community out 100/10 stars for me bru
Try It Right Now.
Open your free studio. No credit card, no setup, no catch. Just start writing.
Start Writing FreeOr read more: How to write rap lyrics · See pricing · The story · FAQ