ShelfPlayer icon
SwiftSuDoKu icon

Rasmus Kramer

For self-hosting enthusiasts and privacy-conscious power users managing personal media servers via Audiobookshelf.

Known forShelfPlayer
2apps3.9(125)BooksGames

Snapshot

Who is Rasmus Kramer?

Providing self-hosting enthusiasts with a premium, native iOS interface for managing and consuming private audiobook libraries.

Target audience

Self-hosting enthusiastsPrivacy-conscious power users managing personal media servers via Audiobookshelf

Active nemesis

Prologue Audio Pty

Other rivals

Portfolio

Free 1
2
apps
Books1
Games1

Last updated

ShelfPlayer

v3.2.1

8mo ago

Steady

Publisher DNA

What defines Rasmus Kramer?

Publisher DNA

Primary focus

Native iOS clients for self-hosted media

Scale

indie

Target audience

Self-hosting enthusiasts and privacy-conscious power users managing personal media servers via Audiobookshelf.

Signature Patterns

  • •Deep integration with Apple ecosystem features like CarPlay and Siri Shortcuts
  • •Premium one-time purchase monetization model
  • •Niche utility focus serving the open-source self-hosting community
  • •Frequent maintenance updates to ensure compatibility with server-side software
Steady

Portfolio momentum

Maintains a steady development pace with 4 releases in the last 6 months for their single active title.

Last release 36d agoActive apps 1

Portfolio

What does Rasmus Kramer ship?

Apps

2 apps analysed

Native Audiobookshelf client architecture creates high switching costs for self-hosting enthusiasts.

  • Elegant design and feature depth provide a superior experience compared to other available server clients
  • Persistent playback position loss and sync failures disrupt the listening habit for long-form audiobook users

Analysis in progress

User Sentiment

How do users feel about their apps?

0

Positive apps

1

Neutral / mixed

0

Negative apps

45/100

Avg sentiment score

Rivals

Who does Rasmus Kramer compete with?

The rivals identified

Nemeses(1)

Prologue Audio Pty

known forPrologue Audiobook Player

1 app4.9Books

Both applications target self-hosted audiobook enthusiasts using Audiobookshelf, creating direct competition for the same user base.

Contenders(10)

Accelyze

known forSpine - Audiobook Player

1 app4.8Books

Both apps target self-hosted audiobook listeners on iOS, competing for users who prioritize privacy and ownership over subscription-based media services.

Deadpan

known forBound - Audiobook Player

1 app4.6Books

Both apps target power users managing personal audiobook libraries with a one-time purchase model, creating direct competition for users seeking to avoid subscription-based media services.

Jeremy Grenier

known forAudioBooth: Audiobooks Player

1 app4.9Books

Both applications serve the same niche of Audiobookshelf users on iOS, creating direct competition for the same self-hosted media audience.

Mihai Petrenco

known forNovelwave: An Audiobook Player

1 app4.7Books

Both apps target iOS audiobook listeners, with ShelfPlayer focusing on self-hosted Audiobookshelf libraries while Novelwave manages local files via iCloud Drive. They compete for the same power-user segment that prioritizes granular playback control and native Apple platform integration.

Nathan Poulson

known forAbsorb - for Audiobookshelf

1 app4.9Books

Both apps target the same Audiobookshelf user base, creating direct competition for the same self-hosted media audience.

Oleg Brailean

known forListenBook: audiobook player

2 apps3.9Books

ListenBook serves users who own local audio files and require a dedicated player with specific Apple Watch capabilities.

Shandong far Heng Supply Chain Management Co.

known forAudio Tome - Audiobook Player

1 app4.5Books

Both applications target Audiobookshelf users, creating direct competition for the same self-hosted media audience through shared server integration.

Teleprompter

known forAudiobook Player SmartBook

1 app4.1Books

Both apps target users managing personal audiobook collections, with ShelfPlayer focusing on Audiobookshelf server integration and SmartBook focusing on local file management.

THE BLUE RIO

known forAudioNest: Audiobook Player

1 app5.0Books

AudioNest competes for the same audiobook listening audience by offering a free, feature-rich player that includes built-in classic content and accessibility tools like character guides and captions.

Victor Carmouze

known forAudiobook Player: MP3 M4A M4B

1 app4.5Books

Both applications target Audiobookshelf users, creating direct competition for the same self-hosting audience through shared server integration capabilities.

Same space(19)

Adrian Martinez Moreno

known forSlowRead: Book Tracker & TBR

1 appBooks

SlowRead provides a visual tracking utility for physical and digital book collections, acting as a companion to the listening experience.

Automattic

known forPocket Casts: Podcast Player

1 app4.8Books

Pocket Casts provides a mature, listener-focused podcast experience that serves as an adjacent utility for users who also consume audiobooks.

Bluck Apps

known forCastro: Podcast App & Player

1 app4.6Books

Castro appeals to power users who prioritize high-volume content management through a unique triage-based workflow.

Brian Smith

known forHomeshelf: Audiobook Player

1 app0.0Books

Homeshelf is a dedicated Audiobookshelf client that focuses on server-synced playback and offline listening capabilities.

Eric Randall

known forAudra Books

1 app4.2Books

Audra Books is a direct Audiobookshelf client that combines audiobook playback with ebook reading in a native interface.

Gianni Carlo

known forBookPlayer

1 app4.8Books

BookPlayer competes directly for the local-file audiobook audience by offering a free, server-agnostic experience that avoids ShelfPlayer's server dependencies.

Hemant Kumar

known forSoundLeaf

1 app4.3Books

SoundLeaf is a direct Audiobookshelf client that emphasizes offline-first functionality, addressing the primary weakness identified in ShelfPlayer.

iXiaoXiang

known forEchoShelf

1 appBooks

EchoShelf is a focused Audiobookshelf client designed to simplify library management and playback for self-hosted users.

Leo Wehrfritz

known forplappa

1 app4.7Books

Plappa is a direct competitor in the self-hosted space, providing native client support for the same AudioBookShelf infrastructure.

Liftbridge Labs

known forMorrow Audiobook Player

1 app5.0Books

Morrow provides a multi-server client experience that supports Audiobookshelf alongside other platforms like BookOrbit.

Photo & Video Editors - Instant Solution

known forPodcast Player - Video & RSS

1 app4.8Books

Podcast Player offers advanced audio processing tools that cater to the same power-user segment as ShelfPlayer.

Podbean - Podcast & Radio & Audiobook

known forPodcast Player App - Podbean

1 app4.6Books

Podbean targets the same audio-focused audience but provides a dual-sided platform that includes creator tools alongside the player.

S Tan

known forAudo the audio book player

1 app3.0Books

Audo targets users who want a simple, file-based player that bypasses traditional iTunes synchronization methods.

Shane Friedman

known forStoryteller Reader

2 apps4.6Books

Storyteller Reader focuses on the immersive reading niche, offering a specialized backend for aligning audio and text.

Storytel Sweden AB

known forStorytel - Audiobooks Library

1 app4.7Books

Storytel serves as a commercial alternative for users who prefer a managed subscription library over the self-hosted infrastructure required by ShelfPlayer.

Toni Na

known forHearHere: Podcast Player

1 app5.0Books

HearHere provides a minimalist podcast player that competes for the attention of users who value ad-free, tracker-free listening.

川 彭

known forKMReader

1 app4.8Books

KMReader is a specialized client for Komga, serving the digital comic and book management needs of self-hosting power users.

睿智 吴

known forShelfPod - For Audiobookshelf

1 app0.0Books

ShelfPod treats podcasts as first-class citizens within the Audiobookshelf ecosystem, differentiating itself from audiobook-only clients.

统伟 陈

known forStill: for Audiobookshelf

1 app4.9Books

Still provides a unified interface for both audiobooks and ebooks, addressing the mixed-media library gap noted in ShelfPlayer.

New entrants(2)

Ila Chandel

known forBookOrbit: The Official App

1 app4.2Books

BookOrbit is a comprehensive media reader that handles audiobooks, podcasts, and various ebook formats within a single self-hosted client.

Zobair S

known forShelved: Audiobookshelf reader

1 app5.0Books

Shelved is a modern Audiobookshelf client that provides a unified experience for both listening and reading digital collections.

The Analyst's Read

The bottom line on Rasmus Kramer

Bottom line

Rasmus Kramer is a specialized indie developer successfully capturing the prosumer segment of the self-hosting market. The publisher's ability to maintain a top-10 chart position for a paid utility suggests strong product-market fit within the Audiobookshelf ecosystem.

Frequently asked questions

How many apps does Rasmus Kramer publish?
Rasmus Kramer has 2 apps tracked by Marlvel, primarily in the Books category.
What kind of apps does Rasmus Kramer make?
Rasmus Kramer's portfolio is concentrated in Books and Games, with an average rating of 3.9/5 across rated apps.
What is Rasmus Kramer's top app?
By review volume across the portfolio, ShelfPlayer is Rasmus Kramer's best-known app tracked by Marlvel.

What fed this analysis

Apps analyzed:
1
With full intel:
1
With overview:
1
Website scraped:
yes
Social presence:
yes

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Rasmus Kramer, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Rasmus Kramer intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/rasmus-kramer

See methodologyContact support

Data licensed under CC-BY-NC 4.0