Precision tools.
One price.
Forever.

Full control over any Roku on your local network — no accounts, no cloud, no pairing codes. The moment you open the app, it scans your local network and lists every compatible Roku device. Tap one. You're in control. Apple TV and Android TV setup guides included.

Load any image file for on-device inspection. OCR text extraction is under development — Tesseract.js language data must be self-hosted to keep this tool fully offline. No images are transmitted anywhere.

An expense tracker that takes privacy seriously. Log income and expenses, categorize spending, and understand where your money goes — without handing your financial data to any company. Every transaction AES-256 encrypted on device. No account. No sync. No server.

Professional-grade pitch detection at 0.1-cent accuracy — the same precision used by piano technicians and orchestral musicians. Strobe disc visualization, historical temperament presets (Pythagorean, Meantone, Kirnberger III). The only mobile tuner with historical temperament support.

A real-time audio analyzer that turns your device into a professional measurement tool. FFT spectrum from 20 Hz to 20 kHz, SPL meter, built-in pink noise generator, RT60 room decay measurement. See your audio, not just hear it.

The engineering unit converter for people who work with real physical quantities. Pressure, force, torque, energy, power, flow rate, temperature. PSI to Pascal, kip to Newton, ft-lbf to N-m, GPM to L/s. SI and imperial, offline.

Solves 2D pin-jointed trusses using the Direct Stiffness Method — the same linear algebra used in professional FEA software. Visual drag-drop canvas, color-coded member forces (tension/compression), PDF export. Available offline on your phone.

Tracks when your medications run out and reminds you to refill before you're down to your last dose. No cloud, no account, no health data leaving your device. Everything AES-256 encrypted on-device. Local notifications, no push server required.

Reads parking sign text and tells you in plain English whether you can park there, and until when. Type or paste the sign text — on-device parsing handles time windows, days of week, and restriction types. Works offline, no account needed.

Calculates heights and distances using trigonometry and your device's sensors — no laser rangefinder needed. Two-position parallax distance mode: measure distance to an object without knowing your distance from it. Works for building heights, trees, cliff faces.

Reads any food ingredient list and flags allergens, controversial additives, and E-numbers — all on-device. E102 is Tartrazine. E250 is Sodium Nitrite. E951 is Aspartame. Color-coded risk levels: safe, caution, avoid. Paste or type the ingredient text.

Tracks every recurring charge and shows you the true monthly cost. Annual plans normalized to monthly. 7-day renewal alerts before money leaves your account. The app that pays for itself — it tells you exactly how much you could save by cancelling.

A daily habit tracker built around one principle: show up every day, watch the streak grow. No gamification, no social features, no noise. One screen: your habits, a check mark for each, your current streak. No day retroactively editable after midnight.

Pings any host and scans your entire LAN for reachable devices — no root required. TCP connect-based probing. Wake-on-LAN support, port scanner, device fingerprinting. Returns sorted list of all reachable devices with IPs and reverse DNS.

A privacy-first time tracker that records where your hours go, organized by category, stored encrypted on device. No screenshots, no employer portal, no keystroke logging. One running timer at a time. Weekly analytics show your real allocation of hours.

Stores passwords and TOTP two-factor codes locally in an AES-256 encrypted vault. No cloud, no account, no breach waiting to happen. The only app that replaces both your authenticator AND password manager — everything in one local vault. Backup codes storage included.

Analyzes any image for dominant color palette, brightness, contrast, and pixel stats — without sending the image anywhere. Color quantization, luminance statistics, hex codes with percentage coverage. Results in under a second, entirely on-device.

A different Stoic quote every day from Marcus Aurelius, Seneca, and Epictetus — with an encrypted journal to respond to what you read. Deterministic by date, so the same date always returns the same quote. One entry per day. Quiet, private, yours.

Inspects any PDF on-device — page count, metadata, page-by-page viewer. Encrypt the raw PDF bytes with AES-256-GCM for secure local archival. No compression, no uploads, no server. Your document never leaves your device.

Records audio and stores it in an AES-256 encrypted vault on your device. Recordings encrypted immediately after capture, plaintext audio wiped. Metadata — title, duration, creation time — also encrypted. The recorder for content that is sensitive.

Removes all EXIF metadata from your photos — GPS coordinates, device model, camera settings, timestamps — before you share them. Re-encodes the image through a clean pipeline producing a new file containing only pixels. Shows which fields were present before wiping.

Measures real-world distances in any photo by calibrating against a known reference object — a credit card, a dollar bill, a coin. Pure arithmetic: pixel span to real-world scale via a single ratio. Encrypted measurement history for documentation.

A hierarchical checklist app with two levels of nesting — perfect for pre-flight, packing, recipes, SOPs, inspection forms. Parent items track aggregate progress as percentage. Check All / Uncheck All at both levels. One-tap duplicate as reusable template.

Tracks every fill-up and computes real fuel efficiency using the tank method — the most accurate way to measure consumption. Log fill-ups with odometer, litres, price. Computes L/100km, US MPG, and UK MPG. Lifetime efficiency analytics with seasonal trends.

Saves clipboard history in an AES-256 encrypted vault with automatic TTL expiry — sensitive copies disappear on schedule. Per-entry expiry: 60 seconds, 5 minutes, or never. Active countdown on each entry. Expired entries purged automatically.

An encrypted credential manager for network secrets — WiFi passwords, SSH keys, API tokens, VPN configs, database credentials. SSH keypair generator built-in. Local HIBP breach detection. AES-256 vault that never leaves your device. Search, filter by category, copy with one tap.

Add text annotations to any PDF page — on-device, without uploading your document. Annotations are saved as a JSON sidecar file alongside the original PDF. No document data transmitted.

Scans folders for duplicate files, large files, and old files — giving you the information to reclaim storage. SHA-256 hashing on-device in streaming 64KB chunks. Three scan modes: Duplicates, Large Files, Old Files. Nothing deleted without explicit confirmation.

Tracks what's in your pantry, when it expires, and how eco-friendly each item is. Expiry tracking so you use what's about to expire first. Eco scoring (1-5) based on environmental footprint. Low-stock shopping list generator. Waste less, consume smarter.

A private encrypted calendar that stores events on-device in an AES-256 vault — independent of iCloud, Google Calendar, or any sync service. Local notifications, no push server. Encrypted file sync to any cloud storage (Dropbox, OneDrive, iCloud Drive — your choice).

One AES-256 vault for health notes, personal goals, journal entries, private contacts, and general notes. Five categories, tag-based cross-category search, records sorted by last-updated. The app for people who keep their most personal data on their own terms.

Logs your sleep every morning with bedtime, wake time, and quality rating. Computes sleep debt, bedtime consistency, and improvement trend — all locally. No wearable required. No server. No subscription. Just honest data about your most important recovery metric.

Paste JSON from any source — API responses, config files, logs — and format, validate, and explore it instantly. Nothing leaves your browser. No telemetry, no tracking, no cloud. Your API keys and database configs stay on your machine.