PrivaLens
Inspect and remove hidden photo metadata locally on iPhone and iPad before sharing images.
AI tech blog and practical software
QOL Apps is now a working journal for AI-assisted product building: how to find app ideas, use coding agents without losing judgment, keep infrastructure cheap at the start, and ship tools that respect user privacy.
Latest essays
A practical way to turn AI into a research partner for pain points, distribution, pricing, and early product judgment.
The common failure mode is treating agents as magic interns instead of opinionated collaborators that need context, taste, and tests.
A grounded mental model for using AI to extend attention, accelerate drafts, and challenge weak plans without outsourcing your judgment.
Vibe coding can be fast, fun, and surprisingly productive, but only when you know where the vibes end and engineering begins.
Personalization is powerful. Agreement is dangerous. Here is how to build a working relationship with AI that keeps both in balance.
Skills are not prompt decorations. They are reusable operating procedures for repeatable work across code, documents, images, and research.
Why early products should avoid fixed monthly burn until usage, revenue, or learning justifies the operational weight.
A practical workflow for keeping context, branches, tasks, and verification intact when you move between laptop, desktop, tablet, and phone.
Apps and tools
Existing product URLs and privacy URLs are preserved for users, app stores, search engines, and platform review.
Inspect and remove hidden photo metadata locally on iPhone and iPad before sharing images.
Privacy-first iPhone SMS filtering using local classification for scam, spam, OTP, finance, and delivery messages.
Estimate unused seats, overlapping subscriptions, payback period, and renewal risk before procurement decisions.
Convert and trim video in the browser for GIFs, audio extracts, screenshots, and lightweight clips.
Generate short-lived signup identities, strong passwords, alias patterns, and encrypted scratch notes.
Plain-English business lessons for strategy, finance, marketing, operations, analytics, and decision-making.
Directory
Privacy and compliance
These pages remain available for app users, app store review, search engines, and advertising verification.