Bound - Audiobook Player
by Deadpan, LLC
- Books
- Paid
- Zombie
- Small & simple · 79
- Rating
- 4.6
- 2K ratings · US storefront
- Top 45%among 70 Books apps
- Last update
- Feb 25, 2025
- Version 2025.2
- Size
- 51 MB
- Category
- Books
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Listen to your favorite DRM-free audiobooks with Bound.
Bound allows you to import audio files from various cloud services and play them back in a beautiful modern interface. Bound will automatically save your listening position so that you never lose your place.
Supported Audio File Types (DRM-free only): .mp3, .m4a, .m4b, .aac
Download
- Dropbox and Microsoft OneDrive.
- Apple Files.
- Web Uploader for importing from your computer via WiFi.
Manage
- Move audio files between books.
- Change cover art.
- Sort based on author, title, recently added, and recently played.
- Rename title and author.
- Choose between a number of fun themes.
- Dark mode support.
Play
- Automatically saves playback location as you progress through the book.
- Independently configure seek forward and seek backward times.
- Chapter support for audio files with embedded chapters (.m4a / .m4b / OverDrive .mp3).
- Change playback speed from 0.5X to 3.0X.
- Smart Rewind when returning to your book after a while.
- Sleep Timer with configurable time or at the end of a chapter.
- Manually bookmark locations that you want to return to.
- CarPlay support.
If you enjoy using Bound, please consider writing a review.
What’s new
Release notes for the latest version, as written by the developer.
This version of Bound brings the following:
! Fixed issues related to Microsoft OneDrive not allowing .m4b downloads.
If you like Bound, please write a review in the App Store!
Rank history
Daily position in the South Korea charts. #1 is at the top.
- Best rank
- #43
- Current rank
- #46
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
79/100
Small & simple
- Developer size70% · 25
Developer: 2 apps on the charts
- Audience size50% · 20
Ratings: 2,027
- App size60% · 10
Size: 51 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #1, 118 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 2025.2LatestReleased Feb 25, 2025