Report updated May 19, 2026
The Mediums' Book
For readers and writers seeking long-form expertise and professional content across business, tech, and design sectors.
The Mediums' Book is a well-regarded book app that is available. With a 4.7/5 rating from 504.9K reviews, it maintains solid user satisfaction. Users particularly appreciate high quality content and educational value keep readers engaged during daily browsing sessions, though login failures and technical regressions following the latest update disrupt the user experience remains a common concern.
What is The Mediums' Book?
The Mediums' Book is a long-form reading platform for expert stories on business, tech, and design, available on iOS and Android.
Users hire the platform to access curated, ad-free professional expertise, replacing fragmented web searches with a structured knowledge base.
Current Momentum
v5.2 · 6d ago
Maintenance- Ships stability fixes for login flow.
- Maintains high-quality content curation cadence.
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Monetization framework for writers to earn revenue based on reader engagement
Text-to-speech playback for long-form stories
Tools to highlight passages, bookmark stories, and organize content into lists
How much does it cost?
- Free tier with limited access
- Premium membership at $4.99/month or $49.99/year
Subscription model anchored at $4.99/month, gating full catalog access to drive recurring revenue.
Who Built It?
F&E System Apps
Providing offline digital reference tools and digitized foundational texts for legal professionals, medical practitioners, and students of philosophy.
Portfolio
13
Apps
What other apps does F&E System Apps make?
Explore the full F&E System Apps report
Portfolio breakdown, audience, momentum, and every app published by F&E System Apps.
What do users think recently?
High confidence · 50 reviews analyzed · Based on 50 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a excited sentiment. Users appreciate high quality content and educational value keep readers engaged during daily browsing sessions and writer-friendly interface provides a unique space for authors to express their ideas globally, but report login failures and technical regressions following the latest update disrupt the user experience and restrictive daily publishing limits frustrate active creators who want to share bulk content.
What Users Love
What Frustrates Users
How have ratings & review volume moved?
Rating, review sentiment, and total reviews over time, with release markers showing the post-launch impact.
Vertical markers = app releases. Hover any release for the post-release impact delta.
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for The Mediums' Book?
How's The Book Market?
How does it evolve in the Book market?
The app holds a #98 Paid rank in its primary category, while maintaining a 4.72 rating across over 500,000 reviews on Android. This gap between high user satisfaction and low paid-chart visibility suggests the subscription-gated model struggles to convert casual readers into paid users.
Rank progression
1 active ranking tracked — 30-day window
Which niche is The Mediums' Book in?
Explore the full Spiritism Readers niche
Every app in this space — 6 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
Substack dominates the long-form expert content niche by directly connecting independent writers to a subscription-based audience, mirroring the target's core value proposition.
Differentiators
- Integrated newsletter-to-app delivery creates a direct, high-retention communication channel between creators and their readers.
- Monetization is baked into the content model, allowing writers to gate premium stories behind direct paid subscriptions.
- Community-first features like comment threads and subscriber-only chats foster deeper engagement than a static reading experience.
Head to head
The target app must pivot from a passive reading library to an active creator-economy platform to compete with Substack's retention and content quality.
Contenders(2)
Feedly serves the same 'expert knowledge' audience by allowing users to aggregate and filter professional content sources.
Differentiators
- AI-powered 'Leo' assistant filters noise and prioritizes topics, solving the information overload problem for power users.
- Supports diverse content formats including RSS, newsletters, and Twitter feeds within a single unified reading interface.
Apple News leverages deep OS-level integration to provide a seamless, high-volume news and long-form reading experience.
Differentiators
- System-level integration provides frictionless access and personalized news delivery across all Apple devices.
- Curated editorial content from premium publishers provides a level of trust and professional polish difficult to replicate.
Same space(3)
Focuses on the utility of reading, offering a highly optimized engine for local files and diverse document formats.
Differentiators
- Offline-first architecture allows for reading without account requirements or internet connectivity, appealing to privacy-conscious users.
- Advanced file format support (PDF, EPUB, MOBI) makes it the preferred tool for technical and academic document consumption.
Provides a massive, free alternative for long-form content by connecting users to their local library's digital catalog.
Differentiators
- Zero-cost access to premium books and audiobooks creates a massive barrier to entry for paid reading platforms.
- Seamless integration with library cards removes the friction of purchasing individual titles or subscriptions.
Dominates the long-form reading market with a massive ecosystem of books and seamless cross-device synchronization.
Differentiators
- Proprietary reading engine offers superior typography, highlighting, and annotation tools for deep-focus reading sessions.
- Massive library access through Kindle Unlimited provides a value proposition that is difficult to match for casual readers.
New entrants(1)
A recent entrant showing high velocity in the serialized fiction space with a focus on mobile-first engagement.
Differentiators
- Serialized, bite-sized content delivery optimized for short, frequent mobile reading sessions throughout the day.
- Gamified reading progression encourages daily active usage through unlockable chapters and reader rewards.
Compare The Mediums' Book against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for The Mediums' Book
Strengths to defend, gaps to attack
Core Strengths
- Encyclopedia-style discovery engine anchors user-curated knowledge bases
- Partner Program incentivizes high-quality content creation via revenue sharing
Critical Frictions
- Login regressions in the latest release erode daily active usage
- Restrictive daily publishing caps trigger churn among active creators
Growth Levers
- Untapped B2B distribution through professional education partnerships
- Algorithm transparency for new writers to improve platform growth
Market Threats
- Substack's direct-to-subscriber model siphons professional independent writers
- Apple News OS-level integration creates frictionless reading alternatives
What are the next best moves?
Rebuild login authentication flow because login failures are the top-reported complaint → stabilize daily active usage
Sentiment analysis identifies login failures as the primary friction point post-update.
Trade-off: Pause the new feature roadmap for the next sprint — stability is the current churn risk.
Adjust daily publishing caps for verified creators because current limits frustrate power users → improve creator retention
Creator complaints regarding publishing limits are directly linked to app deletion.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The platform's restrictive publishing caps are not a bug but a failed attempt to prevent content spam that inadvertently destroys the creator-economy flywheel.
Feature Gaps vs Competitors
- Direct newsletter-to-app delivery (available in Substack but absent here)
- AI-powered content filtering (available in Feedly but absent here)
Key Takeaways
The platform maintains high content value but risks creator churn through technical instability and restrictive publishing policies, so the PM must prioritize login reliability to protect the subscription base.
Where Is It Heading?
Mixed Signals
The expert-content market is consolidating around creator-centric delivery models, leaving passive reading libraries like this one exposed to churn. Unless the platform addresses the technical friction and creator-side publishing limits, the subscription-based growth will continue to lag behind direct-to-subscriber competitors.
Login failures following the latest update disrupt the user experience, which compounds the churn risk for active content creators.
Recent updates focused on stability and adaptations for the latest iOS version, indicating a shift toward maintenance over new feature expansion.