Iamb

Find a rhyme. Type a word to see perfect and near rhymes, grouped by syllables, with the beat of every word marked. Turn on “Same stress” to keep only words that fit your rhythm.

Hear your meter. Write a poem or lyric and switch to Scan. Iamb marks each syllable as a beat or an off-beat, counts the syllables, names the meter of each line and labels the rhyme scheme.

10 syllables · iambic pentameter

What do the marks mean?

/ is a beat (a stressed syllable). ˘ is an off-beat (an unstressed syllable). A letter beside a line (A, B, C…) shows which lines rhyme; “A~” means a near rhyme or an eye rhyme.

Why did Iamb read my line differently than I would?

English stress is flexible, especially on short words like “and”, “to” and “the”. Iamb picks the reading that best fits a regular meter and uses the rest of your poem as a guide. Treat it as a careful second reader, not a judge. Words with a dotted underline aren't in the dictionary, so their beat is a guess.

Which forms can it check?

Sonnet, limerick, haiku, ballad stanza and heroic couplets, plus free verse. Pick a form when you start a poem, or change it with the form button at the top of the poem.

Can I replace a word?

In Scan, tap any word to see rhymes that keep the same beat, then tap one and choose “Use”.

Some rhymes are rude.

Offensive words are hidden by default. You can show them in Settings if your lyrics need them.

Iamb collects no data. There is no account, no sign-in, no analytics, no advertising and no server.

Your writing

Poems, searches and saved words are stored only on your device. They are never uploaded or sent to us or anyone else. If you share a poem, it goes only where you choose to send it.

Dictionary

The rhyming dictionary is built into the app and works without an internet connection. “Define” opens Apple's built-in dictionary on your device.

Children

Iamb collects no information from anyone, including children.

Last updated November 7, 2026.

Pronunciations come from the CMU Pronouncing Dictionary (Carnegie Mellon University). Word frequencies are derived from the Google Books Ngram dataset (CC BY 3.0) via gwordlist. The offensive-word list is the LDNOOBW list (CC BY 4.0). Full notices are in the app under Settings → Acknowledgements.

Questions, or a line Iamb scans oddly? Email tajimaru1209@gmail.com. Pasting the line helps a lot.