Trace is an independent reader for people who bring their own EPUB files, including stories downloaded from Archive of Our Own. Import files from the iOS Files app, then organize a personal library with reading progress and story details. The reader can be used offline, and the listing says there is no library-size limit for on-device EPUB files. A free Trace account can sync library details and reading progress for up to 100 stories, but EPUB files themselves are not included in sync. Trace Unlimited adds unlimited reader sync and private reading statistics through a subscription. A subscription is never required to import, read, or organize EPUBs locally. Trace is not affiliated with or endorsed by the Organization for Transformative Works or Archive of Our Own, and it does not replace AO3's website or services.
Trace: Unofficial AO3 Reader
An unofficial AO3 companion for reading imported EPUB files and organizing a personal story library.
Overview
A closer look at Trace: Unofficial AO3 Reader.
A closer look
App screenshots
Choose with confidence
The useful details.
What it does
- Import user-provided EPUB files from the iOS Files app
- Read and organize stories offline on the device
- Track reading progress and story details in a personal library
- Optionally sync library details and progress with a Trace account
A good fit for
- Readers who keep downloaded fanfiction or other EPUBs on an iPhone
- AO3 readers who want an offline EPUB library alongside their browser reading
Worth knowing
- Users must supply their own EPUB files; those files are not included in cloud sync, and the app is unofficial and unaffiliated with AO3.
Frequently asked questions
Answers based on the app’s official listing and reviewed information.
What is Trace: Unofficial AO3 Reader used for?
An unofficial AO3 companion for reading imported EPUB files and organizing a personal story library.
What can you do with Trace: Unofficial AO3 Reader?
Import user-provided EPUB files from the iOS Files app Read and organize stories offline on the device Track reading progress and story details in a personal library Optionally sync library details and progress with a Trace account
Who is Trace: Unofficial AO3 Reader designed for?
Readers who keep downloaded fanfiction or other EPUBs on an iPhone AO3 readers who want an offline EPUB library alongside their browser reading
What should you know before downloading Trace: Unofficial AO3 Reader?
Users must supply their own EPUB files; those files are not included in cloud sync, and the app is unofficial and unaffiliated with AO3.
Does Trace: Unofficial AO3 Reader include paid features?
Reading, importing, and organizing EPUB files on-device does not require a subscription; a free account can sync details and progress for up to 100 stories. Trace Unlimited adds unlimited reader sync and private reading statistics; current price and billing interval are not stated in the listing.
Which platforms support Trace: Unofficial AO3 Reader?
Greatooly's reviewed app information lists iOS.
Researched from official sources; this is not a hands-on review. Last checked 2026-11-04.
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