Trace Downloads & RevenueTrace: Unofficial AO3 Reader · App Store
Not in any tracked top chart right now.
Updated 12 Nov 2026 · rankings refresh through the day
DeveloperZACHARY SAMUEL LAMBERT
CategoryBooks
PriceFree
Released
Rating★ 5.0 (3)
Version1.0.18
Age rating12+
First seen by us
2 Nov 2026
2 Nov 2026Installs (est.)100+ worldwide
Trace: Unofficial AO3 Reader update history & changes
Last change · 16 events since 6 Aug 2026Full timeline ↓✏️Description updated✏️New iPad screenshots📦Updated to version 1.0.19📦Now updating weekly🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 16 events
- ✏️Trace: Unofficial AO3 Reader: description updated· US
- ✏️Trace: Unofficial AO3 Reader: new iPad screenshots· US
- ✏️Trace: Unofficial AO3 Reader: new screenshots6 screenshots (was 6) · US
- 📦Trace: Unofficial AO3 Reader updated to version 1.0.19Added bookmarks and more control over backups. Fixed a bug with dark/light mode switching on certain reader pages.
- ✏️Trace: Unofficial AO3 Reader: app got bigger35 MB → 46 MB (+29%)
- 📦Trace: Unofficial AO3 Reader: now updating weekly4 updates in 30 days, after a quiet two months
- 📦Trace: Unofficial AO3 Reader updated to version 1.0.18Fixes a problem on iOS 16 and 17 where the Library could stop responding: stories couldn’t be tapped or scrolled, and opening a story could freeze the app. Sorry about that, older iOS versions are hard :D
- 📦Trace: Unofficial AO3 Reader updated to version 1.0.17Fixes an issue in 1.0.16 where the Library could stop responding for some readers with large libraries or linked EPUB folders. Sorry about that, and thank you to everyone who reported it!
- ✏️Trace: Unofficial AO3 Reader: description updated· US
- ✏️Trace: Unofficial AO3 Reader: new iPad screenshots· US
- ✏️Trace: Unofficial AO3 Reader: new screenshots6 screenshots (was 8) · US
- ✏️Trace: Unofficial AO3 Reader: new icon
→ 
· US - 📦Trace: Unofficial AO3 Reader updated to version 1.0.16Search inside any story. Open Contents from the reader's menu and type in the search box.
A new Library design. Saved tab has more metadata for when you're browsing for your next story.
Choose 'Your record' in the menu while reading to change a story's status, give it stars or add a note. You don't need a Trace account.
Display settings opens over the page you're reading: try a theme or text size and the page changes behind it so you can preview. The rest of the app now matches your theme.
Highlighting is one tap.
Settings has been reorganised: Storage, backup and Trace each have their own page.
If you have a Trace account, Trace's Story updates can put a +1 on stories with new chapters on AO3.… more - 🆕Trace: Unofficial AO3 Reader first spotted by AppInsiderUnited States (found via similar)
- 📦Trace: Unofficial AO3 Reader version 1.0.15Keep reading while EPUBs import, and check progress or results from your Library.
Story details now have two swipeable tabs: Story for summaries and tags, and Your record for reading progress, ratings, notes, and highlights.
Saved and sorting are easier to reach, and larger libraries are more responsive. EPUB updates, startup recovery, dark mode, and navigation are more reliable, with clearer import feedback and fewer interruptions.… more - 🆕Trace: Unofficial AO3 Reader released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
3 ratings
Measured
Trace: Unofficial AO3 Reader on the App Store
App details
App ID
6791213935
Publisher
ZACHARY SAMUEL LAMBERT
On the store since
Aug 2026
Under a year
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
12+
Languages
1
EN
Size
46 MB
Also listed in
Books
Trace: Unofficial AO3 Reader downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
5.0 ★
3 ratings
Measured
Ratings
3
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
5.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Books apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Trace: Unofficial AO3 Reader
The offline reader built to make reading AO3 EPUBs as easy as possible.
Most EPUB readers treat an AO3 EPUB like a normal book. They don't know what a fandom, a ship or a WIP is, and they can't tell that the EPUB you just downloaded is the update to a story you're halfway through. Trace Reader is built around exactly what AO3 reading needs: AO3's filters, reading statuses that match your reading, updates that combine updated EPUBs with old ones automatically and keep your place, new-chapter alerts, and the ability to switch between reading on the browser and the epub with your place carried across. And it will never ask for your AO3 login.
FILTER YOUR EPUBS LIKE AO3
Filter your Library by fandom, relationship, characters, tags, warnings, words and kudos, and include or exclude any of them, the same way you would on AO3.
NEW CHAPTERS KEEP YOUR PLACE
When a WIP updates, download the new EPUB and Reader tops up the story you already have. You stay where you were, and the update shows how many chapters were added. Previous versions are kept, so you can restore one if you need it.
SEARCH, HIGHLIGHT AND NOTE
Search the whole story, with matches listed by chapter. Highlight a passage in one tap, then add a note to it, to a chapter or to the whole story.
SORTED BY HOW WE READ FANFICTION
Keep every fic as Saved, Reading, Paused, Caught up, Finished or Dropped. Add star ratings and your own tags. The story you're reading sits at the top of your Library, ready to continue.
DOWNLOADS ADD THEMSELVES Choose your downloads folder once, and new EPUBs from AO3 load into your Library automatically. Selecting iCloud Drive or Google Drive means you can keep your EPUBs accessible on any device. You can still import single files whenever you like.
ONE LIBRARY ONLINE AND OFFLINE
Link a free Trace account and the fics you read on AO3 in Safari and the EPUBs you read here share one Library, with your place kept in both. Read ahead in your browser and Reader offers to pick up at that chapter in one tap. Trace can notify you when a story you follow on AO3 gets a new chapter, and a +1 shows on it in Reader so you know which EPUB to grab.
ACCESSIBLE READING
Paged or continuous scrolling, adjustable type and spacing, and Paper, Sepia, Night or High Contrast themes, with a dyslexia-friendly font.
NO AO3 LOGIN, NO ACCOUNT NEEDED
You should never give a third-party app your AO3 password, and this one will never ask you for it. Reading, importing and organising all work offline, and your EPUB files and story text stay on your device, with no limit on Library size.
TRACE SYNC IS AN OPTIONAL ADD-ON
A free Trace account syncs up to 100 stories, restores your Library details and reading progress on a new device, and shows your reading in any browser. Trace Unlimited is completely optional and adds unlimited sync and private reading Stats. Trace, my other app, also tracks the fics you read on AO3 and FanFiction.net in Safari, in the same Library. A subscription is never
Most EPUB readers treat an AO3 EPUB like a normal book. They don't know what a fandom, a ship or a WIP is, and they can't tell that the EPUB you just downloaded is the update to a story you're halfway through. Trace Reader is built around exactly what AO3 reading needs: AO3's filters, reading statuses that match your reading, updates that combine updated EPUBs with old ones automatically and keep your place, new-chapter alerts, and the ability to switch between reading on the browser and the epub with your place carried across. And it will never ask for your AO3 login.
FILTER YOUR EPUBS LIKE AO3
Filter your Library by fandom, relationship, characters, tags, warnings, words and kudos, and include or exclude any of them, the same way you would on AO3.
NEW CHAPTERS KEEP YOUR PLACE
When a WIP updates, download the new EPUB and Reader tops up the story you already have. You stay where you were, and the update shows how many chapters were added. Previous versions are kept, so you can restore one if you need it.
SEARCH, HIGHLIGHT AND NOTE
Search the whole story, with matches listed by chapter. Highlight a passage in one tap, then add a note to it, to a chapter or to the whole story.
SORTED BY HOW WE READ FANFICTION
Keep every fic as Saved, Reading, Paused, Caught up, Finished or Dropped. Add star ratings and your own tags. The story you're reading sits at the top of your Library, ready to continue.
DOWNLOADS ADD THEMSELVES Choose your downloads folder once, and new EPUBs from AO3 load into your Library automatically. Selecting iCloud Drive or Google Drive means you can keep your EPUBs accessible on any device. You can still import single files whenever you like.
ONE LIBRARY ONLINE AND OFFLINE
Link a free Trace account and the fics you read on AO3 in Safari and the EPUBs you read here share one Library, with your place kept in both. Read ahead in your browser and Reader offers to pick up at that chapter in one tap. Trace can notify you when a story you follow on AO3 gets a new chapter, and a +1 shows on it in Reader so you know which EPUB to grab.
ACCESSIBLE READING
Paged or continuous scrolling, adjustable type and spacing, and Paper, Sepia, Night or High Contrast themes, with a dyslexia-friendly font.
NO AO3 LOGIN, NO ACCOUNT NEEDED
You should never give a third-party app your AO3 password, and this one will never ask you for it. Reading, importing and organising all work offline, and your EPUB files and story text stay on your device, with no limit on Library size.
TRACE SYNC IS AN OPTIONAL ADD-ON
A free Trace account syncs up to 100 stories, restores your Library details and reading progress on a new device, and shows your reading in any browser. Trace Unlimited is completely optional and adds unlimited sync and private reading Stats. Trace, my other app, also tracks the fics you read on AO3 and FanFiction.net in Safari, in the same Library. A subscription is never
Latest updates
1.0.19
Added bookmarks and more control over backups. Fixed a bug with dark/light mode switching on certain reader pages.
1.0.18
Fixes a problem on iOS 16 and 17 where the Library could stop responding: stories couldn’t be tapped or scrolled, and opening a story could freeze the app. Sorry about that, older iOS versions are hard :D
1.0.17
Fixes an issue in 1.0.16 where the Library could stop responding for some readers with large libraries or linked EPUB folders. Sorry about that, and thank you to everyone who reported it!
Store changes
What Trace: Unofficial AO3 Reader changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
New iPad screenshots
New screenshots
6 screenshots (was 6)
