PaywallLens: app rating-slide monitor

Watch competitor app reviews to catch reputation collapse and feature shrinkage early

Problem

A developer found an app rated 4.7 stars overall, yet its last 500 reviews averaged 2.1 stars with 70% at one or two stars — because formerly free features moved behind a paywall. Overall ratings hide recent slides, and manually reading reviews is not feasible.

Solution

Enter an app ID, and the tool periodically pulls the latest reviews, computes recent rating trends and topic clusters, flags complaints about paywalls, price hikes, and removed features, and produces a shareable trend report.

Users

Indie developers doing competitor research, product managers, and SaaS teams watching subscription reputation

MVP

Fetch latest App Store reviews and compute rating trend; cluster complaints by keyword/topic; highlight paywall-related phrases; weekly email digest

Revenue

Subscription by number of monitored apps (e.g., $9/mo for 5 apps), or one-time deep-dive reports

Why now

Paywall expansion and subscription fatigue keep triggering review backlash, and such discussions are rising; the scrape-and-present pipeline is simple for a solo build