---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "The Mediums' Book"
developer_entity: "F&E System Apps"
bundle_id: "LMING"
app_store_id: "399655523"
google_play_id: "com.medium.reader"
category: "Book"
primary_platform: "ios"
primary_monetization: "Subscription"
offline_capable: false
market_region: "US"
platforms: "iOS & Android"
app_last_updated: "2026-05-13"
report_date: "2026-05-19"
last_verified: "2026-05-19T20:18:44.381Z"
report_version: "5.2"
total_reviews: 504941
overall_rating: 4.72
sentiment: "Excited"
sentiment_score: 75
confidence: "high"
confidence_score: 0.8
top_praise_theme: "High quality content and educational value keep readers engaged during daily browsing sessions"
top_complaint_theme: "Login failures and technical regressions following the latest update disrupt the user experience"
review_sample_size: 504940
total_review_count: 50
analyzed_review_count: 50
data_age_days: 43
momentum_velocity: "maintenance"
intelligence_version: 3
nemesis: "Substack"
competitor_count: 7
tags: ["book", "subscription", "excited sentiment", "mobile app", "app review", "app analysis", "readers", "writers", "seeking"]
canonical_url: "https://marlvel.ai/intel-report/books/the-mediums-book"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# The Mediums' Book App Audit

## TL;DR {#tldr}

- **Category**: Book · Subscription
- **Signal**: Rating 4.72 · Sentiment Excited
- **Recent focus**: Login failures and technical regressions following the latest update disrupt the user experience (top complaint) · High quality content and educational value keep readers engaged during daily browsing sessions (top praise)

> **TL;DR:** The Mediums' Book is a book app by F&E System Apps, rated 4.72/5 by 504.9K users, with Excited user sentiment (75/100), available on iOS & Android.
>
> **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** The Mediums' Book maintains Excited user sentiment (4.72/5 from 504.9K reviews), with users consistently praising high quality content and educational value keep readers engaged during daily browsing sessions.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.72/5 (504.9K reviews) |
| **User Mood** | Excited |
| **Category** | Book |
| **Developer** | F&E System Apps |
| **Pricing** | Subscription |
| **Platforms** | iOS & Android |
| **Confidence** | High (0.8/1.0) |
| **Data Age** | 0d |

## Metadata & Market Performance
- **Publisher:** F&E System Apps
- **Category:** Book
- **Target Audience:** Readers and writers seeking long-form expertise and professional content across business, tech, and design sectors.
- **Platforms:** iOS & Android
- **Version Audited:** 5.2
- **Audit Date:** 2026-05-19
- **Signal Count:** 50 reviews analyzed
- **Confidence:** High (0.8/1.0)
- **App Store ID (iOS):** 399655523
- **Bundle ID:** LMING
- **Google Play ID:** com.medium.reader
- **Performance Trend:** Mixed
- **Data Window:** Analysis based on signals collected up to 2026-05-19
- **Short Description:** Read millions of expert stories on business, tech, design, and current events

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** The Mediums' Book is a long-form reading platform for expert stories on business, tech, and design, available on iOS and Android.
**Why users hire it:** Users hire the platform to access curated, ad-free professional expertise, replacing fragmented web searches with a structured knowledge base.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Partner Program:** Monetization framework for writers to earn revenue based on reader engagement
  * *User Intent:* Users seek enhanced value through premium features.
- **[Standard] Audio Versions:** Text-to-speech playback for long-form stories
- **[Standard] Personal Knowledge Base:** Tools to highlight passages, bookmark stories, and organize content into lists
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

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.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Subscription
- **Tiers:** Free tier with limited access, Premium membership at $4.99/month or $49.99/year
- **Price:** iOS: $1.99
- **Analysis:** Subscription model anchored at $4.99/month, gating full catalog access to drive recurring revenue.

<!-- section:sentiment -->
## 🟢 User Sentiment (High Confidence: 50 of 50 reviews analyzed) {#user-sentiment}
- **Overall Rating:** 4.72/5
- **Platform Split:** iOS 2.0/5 (1 ratings) | Android 4.7/5 (504.9K ratings)
- **Overall Sentiment:** Excited

### Top Praises
- **High quality content and educational value keep readers engaged during daily browsing sessions**
- **Writer-friendly interface provides a unique space for authors to express their ideas globally**

### Top Complaints (Impact Areas)
- **Login failures and technical regressions following the latest update disrupt the user experience**
- **Restrictive daily publishing limits frustrate active creators who want to share bulk content**

<!-- /section:sentiment -->
<!-- section:swot -->
## SWOT Analysis {#swot}

**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

<!-- /section:swot -->
## Recent Changes (v2 → v3) {#recent-changes}

The platform transitioned from a free, offline-focused Spiritist reference tool to a subscription-gated professional reading platform, resulting in technical instability and creator churn.

**Overall trend**: Mixed
**Compared at**: 2026-05-19

### High-impact changes
- **[Shifted] Monetization Model Pivot** (pricing) — Moved from a free, offline-only model to a subscription-based model with a $4.99/month or $49.99/year premium tier.
- **[Declined] Technical Stability Regression** (sentiment) — New user complaints emerged regarding login failures and automated code instability following the latest update.
- **[Added] Creator-Side Constraints** (swot) — New weakness identified: restrictive daily publishing caps are causing churn among active content creators.

### Medium-impact changes
- **[Added] Partner Program and Audio Playback** (features) — Introduced a revenue-sharing Partner Program and text-to-speech audio playback, replacing the previous offline-only annotation focus.

<!-- section:rivals -->
## Rivals Landscape {#rivals}

> Competitive positioning identified by AI analysis of app features, category, and market signals.

### The Mediums' Book vs Substack — Head to Head
- **[Substack](https://marlvel.ai/intel-report/news/substack)** by Substack, Inc.: 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.
  - **Moat strength:** High — sustainable advantage over 12 months
  - **Key differences:**
    - 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.
  - **Where The Mediums' Book wins:**
    - ✅ Offers a broader, encyclopedia-style discovery experience that is not limited to specific author-follower relationships.
    - ✅ Provides a more neutral, platform-agnostic reading environment compared to Substack's creator-centric branding.
  - **Where Substack wins:**
    - ❌ Direct monetization tools for creators create a powerful content flywheel that attracts high-quality, professional independent writers.
    - ❌ Push-notification-driven delivery ensures content reaches the user immediately, rather than relying on passive discovery.
  - **Verdict:** 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 (Strong Challengers)
- **[Apple News](https://marlvel.ai/intel-report/news/apple-news)** by Apple [Moat: High]: Apple News leverages deep OS-level integration to provide a seamless, high-volume news and long-form reading experience.
  - 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.
- **[Feedly - Smart News Reader](https://marlvel.ai/intel-report/news/com-devhd-feedly)** by Feedly Inc. [Moat: Medium]: Feedly serves the same 'expert knowledge' audience by allowing users to aggregate and filter professional content sources.
  - 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.

### Peers (What They Do Better)
- **[Amazon Kindle: Reading App](https://marlvel.ai/intel-report/books/amazon-kindle)** by AMZN Mobile LLC: Dominates the long-form reading market with a massive ecosystem of books and seamless cross-device synchronization.
  - 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.
- **[Libby, the library app](https://marlvel.ai/intel-report/books/libby-the-library-app)** by OverDrive, Inc.: Provides a massive, free alternative for long-form content by connecting users to their local library's digital catalog.
  - 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.
- **[ReadEra – book reader pdf epub](https://marlvel.ai/intel-report/books/org-readera-book-reader)** by READERA EOOD: Focuses on the utility of reading, offering a highly optimized engine for local files and diverse document formats.
  - 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.

### New Kids on the Block (What's Innovative)
- **[Novelix](https://marlvel.ai/intel-report/books/com-multibook-read-taletrek)** by CHEEREAD LIMITED: A recent entrant showing high velocity in the serialized fiction space with a focus on mobile-first engagement.

<!-- /section:rivals -->
<!-- section:whats-new -->
## What's New

- **Latest (v4.1, 11 years ago):** Technical updates for iOS compatibility.
<!-- /section:whats-new -->

<!-- section:momentum -->
## App Momentum (Maintenance) {#momentum}

- Ships stability fixes for login flow.
- Maintains high-quality content curation cadence.

> **Cadence:** 5 total versions · 0 majors in last 6 months · 6 days since last update · 527 days avg between updates

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

The Mediums' Book is a market-leading book app that is available.
With a 4.72/5 rating from 504.9K reviews, it delivers strong user satisfaction.

<!-- speakable-start -->
> **Bottom Line:** 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.
<!-- speakable-end -->

**Best for:** Readers and writers seeking long-form expertise and professional content across business, tech, and design sectors.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [INVEST] [HIGH IMPACT] 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: deprioritize Pause the new feature roadmap for the next sprint — stability is the current churn risk.)_
- [ ] [PIVOT] [MEDIUM IMPACT] 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: deprioritize Same-quarter capacity available — no major lever displaced.)_
<!-- /section:pm-actions -->

<!-- section:feature-gaps -->
### 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)
<!-- /section:feature-gaps -->

<!-- section:outlook -->
### Outlook: Mixed

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.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.72/5 |
| Total Reviews | 504.9K |
| Sentiment | Excited (75/100) |
| Confidence | High |
| Pricing Model | Subscription |
| Platforms | iOS & Android |
| Key Features | 3 analyzed |
| Trend | Mixed |
| Outlook | Mixed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **The Mediums' Book** (this app) | 4.72/5 | Excited | F&E System Apps |
| [Novelix](https://marlvel.ai/intel-report/books/com-multibook-read-taletrek) | 4.3/5 | Upset | CHEEREAD LIMITED |
| [Feedly - Smart News Reader](https://marlvel.ai/intel-report/news/com-devhd-feedly) | 4.6/5 | Frustrated | Feedly Inc. |
| [ReadEra – book reader pdf epub](https://marlvel.ai/intel-report/books/org-readera-book-reader) | 4.8/5 | Thrilled | READERA EOOD |
| [Libby, the library app](https://marlvel.ai/intel-report/books/libby-the-library-app) | 4.9/5 | Excited | OverDrive, Inc. |
| [Amazon Kindle: Reading App](https://marlvel.ai/intel-report/books/amazon-kindle) | 4.9/5 | Mixed | AMZN Mobile LLC |

## Company Profile
- **Developer:** F&E System Apps
- **Website:** [https://fesystemapps.com](https://fesystemapps.com)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/the-mediums-book/id399655523?uo=4)
- **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.medium.reader&hl=en&gl=us)
- **Dev Site:** [Official Website](https://fesystemapps.com)
- **Sources:** Developer website content, About us / company information, App store metadata, User reviews.

## Related Intel Reports
- [*Novelix*](https://marlvel.ai/intel-report/books/com-multibook-read-taletrek) (CHEEREAD LIMITED) — 4.3/5 Rating | Terrible Sentiment
- [*Feedly - Smart News Reader*](https://marlvel.ai/intel-report/news/com-devhd-feedly) (Feedly Inc.) — 4.6/5 Rating | Negative Sentiment
- [*ReadEra – book reader pdf epub*](https://marlvel.ai/intel-report/books/org-readera-book-reader) (READERA EOOD) — 4.8/5 Rating | Excellent Sentiment
- [*Libby, the library app*](https://marlvel.ai/intel-report/books/libby-the-library-app) (OverDrive, Inc.) — 4.9/5 Rating | Positive Sentiment
- [*Amazon Kindle: Reading App*](https://marlvel.ai/intel-report/books/amazon-kindle) (AMZN Mobile LLC) — 4.9/5 Rating | Mixed Sentiment
- [*Substack*](https://marlvel.ai/intel-report/news/substack) (Substack, Inc.) — 4.9/5 Rating | Positive Sentiment
- [*Apple News*](https://marlvel.ai/intel-report/news/apple-news) (Apple) — 4.6/5 Rating | Negative Sentiment
- [*Gutenberg | eBook Reader*](https://marlvel.ai/intel-report/books/gutenberg-ebook-reader) (Webron Software LTD) — 4.4/5 Rating | N/A Sentiment
- [*Love Text Messages and Quotes*](https://marlvel.ai/intel-report/books/love-text-messages-and-quotes) (DH3 Games) — 4.7/5 Rating | N/A Sentiment
- [*كتبي للجميع*](https://marlvel.ai/intel-report/books/app--163) (Ahmed Emad AlDeen Lotfy Mahmoud) — N/A Rating | N/A Sentiment

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** — Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** — Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** — Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction and evidence quoting.
4. **Competitive Landscape Analysis** — Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** — Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.8/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 50
- **Data Sources:** user reviews, developer website, company about page, App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 0 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/books/the-mediums-book)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.