Identify the copies that take space
A PDF, its extracted text, and audio generated from it serve different purposes. An additional export in Files can occupy storage too. Do not assume that one visible book title corresponds to only one file on your device or that every copy is managed together.
Start with iPhone or iPad storage settings for an overview, then review the material you still use inside the app. Clear document and export names help distinguish an old audio passage from a current one without having to open and listen to every file.
Choose an export for its intended use
WAV commonly produces larger files than compressed M4A for the same duration, depending on the actual encoding settings. Consider M4A for everyday listening or carrying several chapters. If an editing workflow requires WAV, confirm that requirement before preparing and exporting a large collection.
You do not need both formats for every passage unless each has a purpose. Play the exported file and check its duration. Keep important copies somewhere you can find them before removing generated audio inside FolioTone or deleting the original document used to make it.
Clean up in separate, understandable steps
First review duplicate exports and test documents you no longer need. Then inspect audio parts you have finished hearing. Use the deletion controls the app provides, read confirmation messages, and check their scope instead of guessing that a button removes exactly the content you expect.
Deleting audio while keeping the book may mean generating it again later. That takes time and requires the app in the foreground. Keep passages prepared for an upcoming journey until you are confident that you no longer need them for offline listening on that trip.
Treat app removal and backup separately
Restoring a Pro purchase does not restore books or generated audio. Before removing the app or changing devices, save important sources and exports somewhere you control. Open those copies to verify them before proceeding, rather than assuming that a purchase restore will bring the library back.
Device backup behavior depends on system settings and the services you use. FolioTone does not promise cloud synchronization of your library. A useful cleanup ends with knowing what you kept, where it is stored, and what would be involved in preparing any deleted audio again.
TRY IT WITH YOUR OWN WORDS
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FolioTone works on iPhone and iPad with iOS 18 or later. Voice, OCR and export limits depend on your Free or Pro plan; check the app for current limits.
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