Privacy-focused Apps for iOS & macOS
Simon Ma App Studio
Beautifully crafted apps that respect your data. No ads, no tracking, no compromises. Your device, your files, your privacy.
FuelSaver UK
Find Cheap Fuel & EV Charging Near You
Live petrol and diesel prices from the UK Government's official Fuel Finder service - updated twice daily - plus EV charging locations from Open Charge Map. A colour-coded interactive map shows the cheapest stations near you in green. Sort by price or distance, get turn-by-turn directions via Apple Maps, Google Maps, or Waze, and ask Siri hands-free while driving. Five fuel types: Unleaded E10, Super Unleaded E5, Diesel, Premium Diesel, and EV Charging.
Free · iOS 18+
PDF Toolbox
20+ PDF Tools, Entirely Offline
Merge, split, compress, sign, OCR, watermark, form-fill, annotate, reorder pages, flatten, and convert to PDF/A archival format - all 20+ tools run 100% offline on your iPhone, iPad, or Mac using Apple's native PDFKit and Vision frameworks. Scan paper documents with your camera, protect PDFs with passwords, and edit metadata. Mac version includes keyboard shortcuts. No uploads, no servers, no tracking. Available in 16 languages.
Free · iOS 17.1+ · macOS 15.1+
StatBoard
System Monitor & Network Tools for iPhone
Real-time CPU usage, memory (RAM) pressure, battery health, storage breakdown, and network quality monitoring for iPhone and iPad, with AI-powered device health insights and a 0–100 system health score. Background monitoring triggers smart alerts when thresholds are breached. The Pro Pack unlocks all 9 network diagnostic tools: ping, DNS lookup, port scanner, traceroute, Whois, SSL certificate viewer, MAC address lookup, subnet calculator, and internet speed test.
Free · Pro Pack $4.99 one-time (7-day trial)
IM Tracker
Intimate Wellness Companion
Private intimate health tracking for iPhone with an on-device AI wellness coach (iOS 26+), real-time Quick Log timer, activity rings, streaks, satisfaction analytics, calorie tracking, and sleep quality correlation via HealthKit. Lock the app with Face ID or Touch ID. Encrypted backups use AES-256 with a 6-digit PIN - restore on any device. No accounts, no servers, zero data collection. Available in 8 languages.
One-time purchase · iOS 18+
Get in Touch
Questions, feedback, or feature requests? Reach out on X.
- FuelSaver UK and PDF Toolbox are completely free with no in-app purchases. StatBoard is free with a 7-day trial of all Pro features; the Pro Pack is $4.99 as a one-time purchase (no subscription). IM Tracker is a one-time purchase. No subscriptions, ever.
- No ads, no analytics, and no telemetry in any app. All processing uses Apple's native frameworks entirely on your device - nothing is uploaded to external servers or shared with third parties.
- FuelSaver UK and IM Tracker require iOS 18.0 or later. PDF Toolbox supports iOS 17.1+ on iPhone, iPadOS 17.1+ on iPad, and macOS 15.1 Sequoia or later on Mac. StatBoard runs on iPhone and iPad.
- FuelSaver UK uses live petrol, diesel, and EV prices from the UK Government's official Fuel Finder service (updated twice daily) and EV charging data from Open Charge Map. Sort by price or distance; get directions via Apple Maps, Google Maps, or Waze.
- PDF Toolbox's 20+ tools - merge, split, compress, OCR, sign, watermark, form-fill, annotate, flatten, and PDF/A archival conversion - run entirely on-device via Apple's PDFKit and Vision frameworks. No internet connection required. Your files never leave your device.
- StatBoard Pro Pack ($4.99 one-time) unlocks AI-powered System Health insights with a 0–100 score, background monitoring with custom alerts, and 9 network tools: ping, DNS lookup, port scanner, traceroute, Whois, SSL certificate viewer, MAC address lookup, subnet calculator, and internet speed test.
- IM Tracker stores all data on-device only - no accounts, no servers. Supports Face ID / Touch ID lock, app switcher privacy screen, and AES-256 encrypted backups with a 6-digit PIN. The AI wellness coach (iOS 26+) uses Apple's on-device Foundation Models.
