Walter Tengler

Apps that get
things done

24 apps for macOS and iOS — utilities, real-time data, retro computing, creative tools, and more.

24 Apps

Mac
& iOS Platforms

App
Store Available

Mac Utilities & Creative

12 apps

Retro Graphics Converter

Convert & view vintage computer graphics from Apple II, C64, Amiga, Atari, and more

Transform modern images into authentic retro graphics for 15 classic computer systems

Digital negatives for cyanotype and alternative process UV art printing

Reclaim the disk space your AI tools forgot to clean up

Reclaim the space Final Cut Pro forgot — safely and selectively

Find and remove duplicate files from your Mac with ease

View and edit photo metadata and EXIF data directly on macOS

Smart file organizer that automatically sorts your Mac's chaos

Smart image compression for Mac — smaller files, same quality

Extract beautiful color palettes from any image on macOS

Smart food scanner — scan barcodes and know what you eat

AdSense Monitor

Track your ad revenue from mobile apps in real time

Portugal

8 apps

Civil protection incidents across Portugal, updated in real time

Real-time fuel prices at every petrol station in Portugal

Live train tracking for Portugal's entire rail network

Real-time climate data across Portugal, beautifully visualized

Real-time flood monitoring and river level tracking in Portugal

The essential fishing guide for Portuguese fishermen

Building boundaries and property limits on an interactive map

Certificado Energético

Calculate your home's energy efficiency class in Portugal

Europe & Global

3 apps

Fire — EU Fires

Real-time wildfire tracking across Europe, powered by NASA FIRMS satellite data

EU Energy Monitor

Real-time European energy market data and power generation at a glance

Earthquake & tsunami physics simulation and live seismic tracking

Utilities & Planning

1 app

Emergency Reminder

Plan and manage your emergency supply kit — be prepared when it matters