Open a file
Tap Open and choose a document from your device or cloud file provider. RETU supports text-based PDF, TXT, Markdown, DOCX, ODT, EPUB, RTF, and Google Docs files.
RETUContact← RETU homeFrom document
Quick start guide
From document
to audio, in a few taps.
Learn the essentials of opening a document, listening with synchronized highlighting, saving your place, and creating an audio export.
Press Play and listen as RETU centers the sentence being spoken.
The current sentence becomes more prominent while nearby text stays visible for context.
You can pause at any time, read ahead, or return without losing your place.
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01
Getting started
Start with a document
From the welcome screen, choose the approach that fits what you want to hear.
Or paste text
Tap Paste, add a title, insert your text, and tap Import. This works well for notes, drafts, articles, and shorter passages.
Let RETU prepare it
RETU extracts the readable text, divides it into listening sections, and opens the reading view.
Good to know
The first narration may take a little longer while RETU downloads its speech model and selected voice. After that, narration is generated on your device.
02
Reading and playback
Listen and follow along
Keep the document visible while it speaks, or expand the reading view when you want fewer distractions.
Play and pause
Use the large center control to prepare narration, start listening, pause, or resume.
Follow narration
Turn on Follow to keep the active sentence centered as the document is spoken.
Move through the document
Use replay, the 10-second controls, the progress bar, or the narration timeline to move around.
Good to know
Try it: press Play while Follow is on. The current sentence becomes more prominent while nearby text stays visible for context.
03
Voice and pace
Make narration yours
Open Settings and More from the player, then use the Reader tab to adjust how RETU sounds and moves.
Choose a narrator
Try a few lines with Replay after changing voices. Names and technical terms can sound different across narrators.
Set the playback speed
Use a slower pace for dense material, a moderate pace for everyday reading, and a faster pace for familiar content.
Use the timeline
Move among prepared sections or jump toward a page in paged documents.
Good to know
RETU remembers your selected narrator, playback speed, and reading position locally so you can continue later.
04
Bookmarks and resume
Save your place
Create named bookmarks for passages you want to revisit, or simply let RETU remember where you stopped.
Add a bookmark
Pause near the passage, then use the bookmark control in the player or top app bar.
Keep labels useful
Rename automatic labels to something memorable, such as Key finding, Review later, or Chapter summary.
Resume a recent document
Select it from the welcome screen, then choose Resume Now or Start Over.
Good to know
When you resume, RETU can restore the saved part, playback time, voice, speed, and bookmarks.
05
Export audio
Take the audio with you
Saved exports are separate from live narration and render the full document as an M4A audio file.
Open Export
Tap Settings and More in the player, then choose the Export tab.
Render the document
Tap Render Export. RETU shows progress while it generates the audio.
Preview or share
When it is ready, use Play, Open, or Share. Use Remove when you no longer need the saved export.
Important
Automated narration and highlighting can contain errors. For important material, always verify the result against the original document.
Questions or support
Need a hand?
If something does not look or sound right, tell us what you were trying to do.