My notes on software engineering, app launches, and product development.https://pertiller.tech/https://pertiller.tech/blog/agentic-software-development/https://pertiller.tech/blog/agentic-software-development/A few weeks ago, the Salzburger Nachrichten ran a story about my fuel price app. I woke up to more messages than I could count. Readers had either newly discovered the app, existing users asked what was coming next…Sun, 26 Apr 2026 22:00:00 GMThttps://pertiller.tech/blog/spritpreise-deutschland-aktuelle-lage/https://pertiller.tech/blog/spritpreise-deutschland-aktuelle-lage/Die Lage an den Tankstellen ist gerade brutal. Insbesondere in Deutschland. Ich habe mir deshalb die Daten der letzten Tage genauer angeschaut und visualisiert, um die Geschehnisse aufzuzeigen. Infografik: Aktuelle…Fri, 06 Mar 2026 23:00:00 GMThttps://pertiller.tech/blog/spritpreise-deutschland/https://pertiller.tech/blog/spritpreise-deutschland/I always like to use the Christmas holidays (this time I treated myself to almost three weeks off) to push my private software projects forward. It's the perfect opportunity to experiment with things I simply don't…Sat, 10 Jan 2026 23:00:00 GMThttps://pertiller.tech/blog/tanken-fyi-2023/https://pertiller.tech/blog/tanken-fyi-2023/A turbulent year at the gas pump! 2023 was a true price dance at the gas stations in Austria. This infographic from my website https://tanken.fyi captures the wild ride of diesel and gasoline prices. See for yourself…Thu, 11 Jan 2024 23:00:00 GMThttps://pertiller.tech/blog/comparison-of-fuel-prices-in-austria-by-federal-state/https://pertiller.tech/blog/comparison-of-fuel-prices-in-austria-by-federal-state/The new update of my app Spritpreise Österreich contains a federal-state comparison with the average prices per Bundesland. It also shows the currently cheapest and most expensive federal state. Example of the current…Fri, 08 Jul 2022 22:00:00 GMThttps://pertiller.tech/blog/spritpreise-at-clever-tanken/https://pertiller.tech/blog/spritpreise-at-clever-tanken/I use my new app Spritpreise Österreich not only when refueling my car, but also to calculate some statistics behind the scenes. The past few days I was looking into a correlation between days with increased traffic…Wed, 08 Jun 2022 22:00:00 GMThttps://pertiller.tech/blog/public-toilets-in-vienna-and-hand-disinfection/https://pertiller.tech/blog/public-toilets-in-vienna-and-hand-disinfection/Acting together to fight the coronavirusI have updated my app Public Toilets in Vienna with great data from the City of Vienna, which enables my app to show opportunities for hand disinfection. Disinfecting hands helps…Tue, 08 Mar 2022 23:00:00 GMThttps://pertiller.tech/blog/bitcoin-monitor-has-reached-50k-installs-on-android/https://pertiller.tech/blog/bitcoin-monitor-has-reached-50k-installs-on-android/While my free app Bitcoin Monitor started mostly with iOS users, it recently saw exponential growth with 10.000 new users in a single month and more than 50k installs as of May 2020. This is organic growth only. The…Sat, 18 Jul 2020 22:00:00 GMThttps://pertiller.tech/blog/stencil-web-components-in-react-apps-with-generated-react-wrappers-and-typings-for-efficient-use-with-typescript-and-tsx/https://pertiller.tech/blog/stencil-web-components-in-react-apps-with-generated-react-wrappers-and-typings-for-efficient-use-with-typescript-and-tsx/Use Stencil components in React with generated React wrappers and typings for efficient use with TypeScript and TSXSun, 31 May 2020 22:00:00 GMThttps://pertiller.tech/blog/stock-watch-faang-signals-2020/https://pertiller.tech/blog/stock-watch-faang-signals-2020/Since the outbreak of COVID-19 Stock Watch FAANG Signals has seen tremendous momentum in the stock market. This picture of yesterday's close is just one of many examples of the volatility in current markets:Apple fell…Tue, 07 Apr 2020 22:00:00 GMThttps://pertiller.tech/blog/public-toilets-in-vienna/https://pertiller.tech/blog/public-toilets-in-vienna/Open Government DataWho would have thought? Our government in Vienna uses various blockchains (Ethereum, Bitcoin, Litecoin) to store timestamps & checksums of all Open Government Datasets that ever existed. Such a…Mon, 23 Sep 2019 22:00:00 GMThttps://pertiller.tech/blog/quick-wins-for-your-ionic-angular-app-with-es2015/https://pertiller.tech/blog/quick-wins-for-your-ionic-angular-app-with-es2015/Originally posted at: Medium You may have heard about differential loading. It’s an upcoming feature of the Angular CLI 8 and it creates separate bundles for ES2015 and ES5:Sat, 18 May 2019 22:00:00 GMThttps://pertiller.tech/blog/citybike-vienna-warm-temperatures/https://pertiller.tech/blog/citybike-vienna-warm-temperatures/I used Open Government Data to create a time-lapse video showing bike rentals from Vienna’s Citybike stations. Intro:Original Blog Post: Vienna ❤ Citybikes @MediumThese rental bikes are available free of charge for one…Sat, 23 Mar 2019 23:00:00 GMThttps://pertiller.tech/blog/visit-bitcoin-monitor-at-bitcoinmonitor-app/https://pertiller.tech/blog/visit-bitcoin-monitor-at-bitcoinmonitor-app/Bitcoin Monitor has moved to: https://bitcoinmonitor.appThe new website has a PageSpeed score of 100 points and got 2 new features since the last update:☆ Trade Signals☆ Volatility MetricsBitcoin Monitor is also…Sat, 29 Dec 2018 23:00:00 GMThttps://pertiller.tech/blog/new-app-stock-watch-faang-signals/https://pertiller.tech/blog/new-app-stock-watch-faang-signals/This app gives you insights into the stock price and performance of NASDAQ's top tech stocks and calculates real-time trading recommendations for Facebook, Apple, Amazon, Netflix, Alphabet and Microsoft. Find out which…Sun, 16 Dec 2018 23:00:00 GMThttps://pertiller.tech/blog/summer-is-calling-wassertemperatur-in-oesterreich/https://pertiller.tech/blog/summer-is-calling-wassertemperatur-in-oesterreich/Summer is calling! That's why I created a new app that visualizes the water temperatures of all Austrian lakes, rivers and reservoirs on Google maps. It provides information about:Water temperatureWater quality…Fri, 20 Jul 2018 22:00:00 GMThttps://pertiller.tech/blog/citybikes-wien-app/https://pertiller.tech/blog/citybikes-wien-app/Citybike Wien is a bike-sharing service where you can rent bikes for free for one hour. It is the cheapest and most eco-friendly choice to travel through Vienna. There are currently 121 bike stations across Vienna…Mon, 21 May 2018 22:00:00 GMThttps://pertiller.tech/blog/the-evolution-of-bitcoin-monitor-crypto-coin-check/https://pertiller.tech/blog/the-evolution-of-bitcoin-monitor-crypto-coin-check/I'm happy to share with you my broader vision of Bitcoin Monitor, my new app Crypto Coin Check. Crypto Coin Check expands on the concept of real-time price monitoring across exchanges. The brand new feature called…Wed, 04 Apr 2018 22:00:00 GMThttps://pertiller.tech/blog/bitcoin-monitor/https://pertiller.tech/blog/bitcoin-monitor/Bitcoin MonitorI created a little app for comparing cryptocurrency prices from Kraken, Coinbase, GDAX, Bitfinex, Bitstamp, Bitpanda & Coinfinity! It has support for Bitcoin, Ethereum, Bitcoin Cash & Litecoin with…Sat, 20 Jan 2018 23:00:00 GMThttps://pertiller.tech/blog/on-the-subject-of-multiple-subscriptions-with-rxjs/https://pertiller.tech/blog/on-the-subject-of-multiple-subscriptions-with-rxjs/A while ago, I answered this question on StackOverflow regarding multiple subscriptions to an RxJS Observable. As with everything else of RxJS, the answer is simple and elegant. But first, let's start with the actual…Wed, 18 Oct 2017 22:00:00 GMThttps://pertiller.tech/blog/browser-market-share-in-austria/https://pertiller.tech/blog/browser-market-share-in-austria/I recently took a look at the Austrian Web Analysis' statistics of browser market share in Austria, which provides an evaluation of page impressions of participating Austrian websites (see link) on a monthly basis. Why…Wed, 30 Nov 2016 23:00:00 GMThttps://pertiller.tech/blog/debuggable-browser-for-android/https://pertiller.tech/blog/debuggable-browser-for-android/Debugging the Android native browserA couple of months ago, I created a small but handy Android app that enables developers to run their web apps inside the Android stock browser while allowing them to debug and…Tue, 09 Jun 2015 22:00:00 GMThttps://pertiller.tech/blog/award-for-outstanding-achievements/https://pertiller.tech/blog/award-for-outstanding-achievements/Photo rights: Moni FellnerIn 2014, I was able to complete both of my Master's degrees with highest honor and even got an award by Kapsch - one of Austria's most successful technology corporations - in recognition of…Tue, 30 Dec 2014 23:00:00 GMThttps://pertiller.tech/blog/speaker-at-ptc-live-stuttgart-2013/https://pertiller.tech/blog/speaker-at-ptc-live-stuttgart-2013/I'm happy to announce that I'm a speaker at the PTC Live conference in Stuttgart this November. The talk is about new visualization concepts for software projects which utilize PTC's Integrity - you better don't miss…Thu, 10 Oct 2013 22:00:00 GMThttps://pertiller.tech/blog/fixing-error-executing-command-ant-on-mac-os-x-10-9-mavericks/https://pertiller.tech/blog/fixing-error-executing-command-ant-on-mac-os-x-10-9-mavericks/Today I stumbled over an unexpected problem when trying PhoneGap/Cordova with Mac OS X 10.9 Mavericks. Building a project for iOS went just fine, but building for Android wasn't without some guesswork. After installing…Tue, 01 Oct 2013 22:00:00 GMThttps://pertiller.tech/blog/data-for-master-thesis/https://pertiller.tech/blog/data-for-master-thesis/In my master thesis, I'm aiming for a better management of complexity of business projects by dedicated and context-driven visualizations. These visualizations are going to be substantially different from what typical…Mon, 25 Feb 2013 23:00:00 GMThttps://pertiller.tech/blog/up-and-running/https://pertiller.tech/blog/up-and-running/The good thing is, I took the time and jump-started this site during a week off in February 2013. I always thought about having a website on my own since this seems mandatory these days anyway. But here's the bad thing…Sun, 24 Feb 2013 23:00:00 GMT