Comparison

DeerReader vs Sine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DeerReader

Organize and listen to your digital audiobooks with a beautiful, intelligent player. Features adaptive UI, fast search, and automatic sorting into collections using AI. Enjoy a seamless listening experience with home screen widget access.

Highlights
  • Adaptive player UI matching audiobook cover
  • Fast, unified search for books and authors
  • Home screen widget for instant access
  • AI-powered automatic organization into collections
  • Intuitive playback controls
  • Support for large digital libraries
Read full description

Your audiobooks, beautifully organized. DeerReader is a sleek, intelligent audiobook player designed for serious listeners and collectors. Whether you have a few favorites or a sprawling digital library, DeerReader gives you the tools to make listening effortless and beautiful. -- Seamless Listening Experience -- DeerReader adapts to you. The player UI matches your audiobook cover, so every session feels immersive and cohesive. Play, pause, and skip with intuitive controls designed for long sessions. -- Instant Search, Instant Listening -- Find the right book, author, or collection in seconds. Our fast, unified search makes browsing huge libraries feel light and responsive. -- Home Screen Widget -- Stay in the story, right from your home screen. Instantly jump back into your audiobook with our widget and see your recent listens at a glance. -- Let Apple Intelligence Do the Sorting -- DeerReader can use Apple Intelligence to automatically organize your audiobooks into themed collections and series, complete with matching artwork and clean labels (perfect for large libraries). ----- Why DeerReader? - Designed with audiobook lovers in mind - Gorgeous, adaptive design - Home screen widget access - Full collection support - Lightning-fast search - Intelligent auto-sorting Whether you’re replaying a classic or diving into something new, DeerReader makes every listen smoother, smarter, and more beautiful. 100% Private DeerReader never collects or transmits your data. Everything stays on your device, always. A subscription removes the hourly support message. Payment will be charged to your Apple account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current billing period. Your account will be charged according to your plan for renewal within 24 hours before the end of the current billing period. You can manage or turn off auto-renew in your Apple ID account settings at any time after purchase. Privacy Policy: https://www.deerreader.app/privacy.html Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Please reach out for support at: cloverfield.tech.llc@gmail.com

About

Sine

This app allows you to import and listen to your own audiobooks in various formats. It offers advanced playback controls, chapter navigation, a sleep timer, and a unique silence skipping feature to save listening time. Your privacy is protected with no accounts or tracking.

Highlights
  • Import MP3, M4B, M4A, FLAC, AAC files
  • Variable playback speed
  • Chapter navigation and bookmarks
  • Sleep timer with fade
  • Skip Silence feature
  • 10-band equalizer
  • CarPlay and widget support
Features
Read full description

Sine is an audiobook player for iOS — built for readers who listen. Import your own MP3, M4B, M4A, FLAC, and AAC files via Files, AirDrop, WiFi upload, URL download, or share extension. Then listen with the controls audiobook readers actually want: • Variable speed (0.5×–4.0×) with per-book memory • Chapter navigation and bookmarks with notes • Sleep timer with gradual fade and shake-to-resume • Smart rewind on resume • Folders, search, and custom drag-and-drop ordering for books and folders • 10-band equalizer with presets and a custom slot • Volume boost and normalization • Gesture mode (tap zones on artwork to control playback) • Dynamic player colors (tints from the book's artwork) • Lifetime listening stats with daily, weekly, and monthly charts • CarPlay and Apple Watch remote (both in beta) • Lock screen, AirPlay, and headset buttons • Interactive playback widgets, Siri Shortcuts, Spotlight search • Full VoiceOver accessibility SKIP SILENCE (BETA) Most audiobooks contain hours of silent gaps and trailing pauses — skip them automatically and save real time over the course of a book. Tune the sensitivity to your taste, see your lifetime savings, and listen faster without missing a word. Skip Silence is in beta: turn it on and it starts automatically when you play a book. PRIVACY-FIRST No Sine account required. No ads. Your library is stored locally. Optional usage analytics help improve the app: feature events, listening-time ranges, a random installation identifier, and app and OS versions. These analytics do not include book titles, file names, or audiobook content. You can turn off usage sharing in Settings. Built from scratch with SwiftUI, AVAudioEngine, and SwiftData. Zero third-party dependencies.

Screenshots

DeerReader4 screens
Sine4 screens

Verdict

The call

The clearest difference is in-app purchases: Sine at none against DeerReader's 1. Sine also leads on update cadence (every 2 weeks vs every 5 weeks) and ratings volume (7 vs 2). DeerReader's advantage is device support (4 vs 2). On price, rating, review sentiment and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DeerReader sells 1 in-app purchase, starting at $9.99 per year. Sine asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for DeerReader against 4.9 for Sine. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

DeerReader ships an update every 5 weeks, Sine every 2 weeks. Both last shipped on November 5, 2026.

Scorecard6 real differences · 4 level
DeerReader versus Sine: the parameters behind the verdict, then further details
ParameterDeerReaderSine
PriceFreeFree
Rating5.0 (2 ratings) — better4.9 (7 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings27 — better
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone, Apple Watch
Requires iOS26.117.0 — better
Further details — not scored
Size27 MB9 MB
Age rating4+4+
DeveloperCloverfield Technologies LLCDallen Burwell

Customer experience

DeerReader

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Sine

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

DeerReader

Subscriptions1
  • Yearly Support Subscription$9.991 Year
None

Sine

No in-app purchases

Questions

Is DeerReader free?
DeerReader is free to download, with in-app purchases available.
Is Sine free?
Sine is free to download, with no in-app purchases.
Which has better reviews, DeerReader or Sine?
DeerReader is rated higher. DeerReader averages 5.0 out of 5 from 2 ratings, while Sine averages 4.9 from 7 ratings.
Do DeerReader or Sine have ads?
Neither DeerReader nor Sine shows ads.
Which is updated more often, DeerReader or Sine?
DeerReader ships an update every 5 weeks, and Sine every 2 weeks. Most recently, DeerReader was updated on November 5, 2026 and Sine on November 5, 2026.

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