What this app is. What it isn’t. What you could build.

One-liner

A lightweight, no-frills EPUB, CHM, and TXT reader for iOS with strong file format support and minimal distractions.

Strengths

Excellent EPUB rendering with consistent formatting across books (review: 'reads EPUBs perfectly without layout issues')
Supports multiple formats including CHM and TXT, rare in simple readers (review: 'handles CHM files like a pro')
Fast loading and smooth scrolling even on older devices
Clean, minimalist interface with no ads or in-app purchases
Highly rated for reliability and stability (4.5/5 from over 10k reviews)

Weaknesses

No built-in library management or syncing across devices (review: 'I can’t sync my reading progress anywhere')
Limited customization options for fonts, spacing, and themes (review: 'wish I could change the font size more easily')
No night mode or dark theme (review: 'reading at night is painful without dark mode')
No search functionality within books (review: 'can’t find specific words in long texts')
No cloud integration (iCloud, Dropbox) for importing files (review: 'have to manually transfer files via cable')

Opportunities

Add dark mode and customizable reading themes to improve accessibility and comfort
Introduce basic book search and bookmarking features to enhance usability
Implement iCloud sync to allow seamless reading continuity across devices
Build a simple library manager with metadata tagging and sorting
Offer a free tier with optional paid upgrade for cloud sync and advanced themes

Build ideas

Competitors

AI-generated brief · 5/12/2026, 10:34:17 AM

First load takes ~10–30s while we generate the brief. Cached afterward.