Never Sound
Off-Beat Again.
A pro songwriting studio that highlights your rhymes, counts your syllables, and tracks your flow in real time.
It catches the slant rhymes rappers actually use (like "casket / Patek"), live as you type.
One account on every device. Your lyrics always sync.
Android app coming soon. Write free in your browser right now.
Point your phone camera here to get the iPhone app. There's a Better Way to Write Bars.
Most apps weren't built for rap. Here's what changes when one is.
- You rhyme everything in your head and hope you don't forget the scheme.
- No way to check if your syllables actually fit the beat.
- Writer's block hits and you stare at a blank screen.
- Every rhyme lights up instantly as you type.
- Live syllable counter shows how your flow fits a 4/4 beat.
- Tap any word for instant rhymes, vibe-matched swaps, and full phrases.
Built for the Way Rappers Actually Write.
Every feature you need to lock in a verse. Nothing you don't.
See Every Rhyme Light Up as You Type.
Type a bar. The rhymes glow live. It hears how words actually sound, so it catches what spell-check apps miss.
- Every rhyme lights up the moment it lands
- Slant rhymes too, like "casket / Patek"
- Every rhyme scheme gets its own color
- Works for US, UK, Australian, and Canadian English
Three Tools, One Tap.
Tap any word. A drawer slides up with three columns: rhymes, word swaps, and full phrases. Pick one. It drops in your line.
- Rhymes are instant. No waiting, no Credits
- Word Swaps in your vibe: Trap, Drill, Lyrical, Melodic
- Multis are syllable-matched, so they fit your flow
- Want more? Hit "Full Dictionary" for hundreds more
Pull up in the foreign, gang slidin' on a wave
Stay On Beat, Bar After Bar.
The counter ticks up as you type. It counts syllables the way rappers count them, not the way textbooks do. So your flow lines up before you ever hit record.
- Counts real syllables: 'foreign' = 2, 'fortunately' = 4, 'FBI' = 3
- Reads contractions: 'slidin'', 'tryna', 'gonna' all count right
- Beat Grid shows where each syllable lands in your 4/4 beat
- Color zones warn when a bar's too packed to flow clean
When Eight Rhymes Isn't Enough.
The quick drawer gives you 8 rhymes for fast writing. Need more? Tap the book icon. The full Rhyme Finder opens. Same accuracy, no limit.
- Hundreds of rhymes for common words, grouped by syllable count
- Perfect rhymes and slant rhymes, all in one view
- Opens from any word in your verse with one tap
- Word not in the dictionary? AI finds rhymes for it instead
The Next Bar Writes Itself.
Empty lines fade in live rhyme hints. Picked from your last end-word and your vibe. No tap. No Credits. Just read and write.
- Fresh hints appear every few seconds on every blank bar
- Ranked by your last end-word and your vibe
- Free forever. Zero Credits, no monthly limits
- Same logic as Rhyme Highlighting. Instant, on-device
Type Bar 2… Stack the bag in cash, watch the bank take Bag stacked up like the vault gon' take
savage…
Write a Bar. Rewrite the Bar. Keep Both.
Stuck on a blank line? The AI drops 3 starter bars in your vibe. Got something but want it tighter? It polishes the line. Your original auto-saves. Swipe between them like takes in a booth.
- Empty line: get 3 starter bars in your vibe (Trap, Drill, Lyrical, Melodic)
- Written line: AI polishes it. Your original saves as a second draft
- Swipe to switch between versions. Nothing gets lost
- 1 Credit = 1 AI generation. Free: 15/month. Pro: 800/month
Most of the rappers I've worked with over the years had the same problem. Writing in Notes, losing schemes they could never get back. The rhyme sites they tried only caught the obvious stuff. The multi-syllable patterns they were actually trying to land never showed up on screen.
I went through the same thing on my own bars. So I built RhymeFlux for us. Real-time highlights, syllable counts that match how rappers actually count, and an AI that won't write a bar without reading the lines before it first.
Three Steps. That's It.
From empty studio to finished verse. Watch the writing arc play out.
All Songs & Albums
4 songs · 1 albumLate nights in the lab, every bar designed for damage
Day-ones in the cab, fake ones tryna manage
Type Bar 3…
Type Bar 4…
Late nights in the lab, every bar designed for damage
Stop Guessing. Start Writing.
The free plan lets you test the pro tools, and the free writing tools need no account at all. Go Pro to unlock everything and write your tightest verse yet.
Free lights up rhyme colors and Pro tools on your first 12 bars, so you can see them in action before you upgrade.
No card needed. Test the studio on one song.
- 1 Active Song (3 Sections)
- 15 AI Credits Per Month
- Rhyme Highlighting (First 12 Bars)
- Cross-Device Cloud Sync
- Recycle Bin (Restore Deleted Bars)
Lock in your flow tonight.
- Unlimited Projects & Songs
- Unlimited Recording Takes Per Line
- Unlimited Beat Player Time
- 800 AI Credits Per Month
- Cross-Device Cloud Sync
- Full Rhyme Highlighting (No 12-Bar Limit)
- 7-Day Offline Mode
- Recycle Bin (Restore Deleted Bars)
Most artists pick this one.
- Everything in Monthly
- Save 45% (just $8.25 / month)
Cancel Anytime · Zero Contracts
Ownership for life. No monthly bills.
- Everything in Monthly
- Pay Once, Own It Forever
All prices are inclusive of VAT where applicable. Transactions processed by Paddle.
And That's Not
Even Half Of It.
Twelve more tools waiting in the studio. Each one earns its spot when you're locked in.
Full Song View
See your whole song on one page. Read it top to bottom before you hit record.
Drag-and-Drop Structure
Grab a verse and drop it where you want. Rearrange your song in one click.
Teleport Lines
Move any line to a new spot in one tap. Verse to hook. Hook to bridge. Done.
Built-In Beat Player
Loop any YouTube beat or drop in your own MP3. No YouTube Premium needed. 15 min free, unlimited on Pro.
Audio Studio
Record your vocal takes straight onto each line. Play them back without leaving the page.
Booth Teleprompter
Turn your phone into a recording booth teleprompter. Big text, auto-scroll, screen never dims.
Focus Timer
Set a timer. Lock in. Write hard until the bell rings. No distractions.
God Prompt
Stuck on a blank section? Tap once. God Prompt gives you 3 opening bars in your vibe to choose from.
Generate Next Bar
Hit an empty line? Tap once. The AI finishes your rhyme, switches it up, or matches your syllable count.
Concept Roller
Out of ideas? Roll a random rap topic and keyword set. Free. No Credits used.
Cloud Sync
Open your project on any device and pick up right where you left off. Edits from your phone and your laptop both stick.
7-Day Offline Mode
Pro users keep writing for a full week with zero Wi-Fi. Everything syncs back the second you're online.
Got Questions?
Is RhymeFlux free to use?
How is this different from other rhyme sites and apps?
What does the AI actually do?
How does the AI compare to ChatGPT or other general LLMs?
Is RhymeFlux for writing songs or for freestyling?
Does RhymeFlux write my lyrics for me?
Can I import or export my lyrics?
What happens to my lyrics if I lose internet?
Can I cancel anytime?
Does RhymeFlux work in other languages?
Ready to Write
Your Best Bars?
Open your free studio right now. No credit card, no setup, no catch.
Start Writing FreeNo credit card · 15 free AI Credits / month · Cancel anytime