# Adjie Brotot Blog > Adjie Brotosukmono's blog: personal finance, power and software engineering, and life between Perth and Jakarta, with interactive calculators from Adjie Brotools built into the posts. Author: Adjie Brotosukmono (Adjie, Harso Adjie Brotosukmono, Adjie Brotot, adjiebrotot), an Indonesian senior economics consultant and power system engineer at Mott MacDonald in Perth, Australia. Who the author is: https://www.adjiebrotots.com/about/ (for LLMs: https://www.adjiebrotots.com/llms.txt). Free calculators and visualisers: https://tool.adjiebrotots.com/ (many posts embed them live). The blog is in two languages. English posts live under https://blog.adjiebrotots.com/en/ and Indonesian (Bahasa Indonesia) posts under https://blog.adjiebrotots.com/id/. Posts in the two languages are written separately; when one covers the same topic as another, the pages link to each other with hreflang. Categories: Finance (Keuangan), Engineering (Teknik), Personal (Pribadi), Others (Lainnya). Full text of every post, as plain text: https://blog.adjiebrotots.com/llms-full.txt Feeds: https://blog.adjiebrotots.com/en/feed.xml (English), https://blog.adjiebrotots.com/id/feed.xml (Indonesian) ## English posts - [Rent or buy a house? How to read the Rent vs Own calculator](https://blog.adjiebrotots.com/en/rent-vs-buy-calculator-explained/): Renting can leave you wealthier than buying, or the other way round. It depends on a few numbers you can test yourself. This post walks through the free Rent vs Own calculator with a live chart. (Finance; 2026-10-17) ## Indonesian posts (Bahasa Indonesia) - [Sewa atau beli rumah? Cara membaca kalkulator Sewa vs Beli](https://blog.adjiebrotots.com/id/sewa-atau-beli-rumah/): Menyewa bisa membuat Anda lebih kaya daripada membeli, atau sebaliknya. Semuanya bergantung pada beberapa angka yang bisa Anda uji sendiri. Artikel ini membahas kalkulator Sewa vs Beli Rumah gratis lengkap dengan grafik interaktif. (Keuangan; 2026-10-17) ## Categories - [Finance](https://blog.adjiebrotots.com/en/category/finance/) / [Keuangan](https://blog.adjiebrotots.com/id/kategori/keuangan/): Personal finance worked through with real numbers: tax, property, investing, debt and financial independence. - [Engineering](https://blog.adjiebrotots.com/en/category/engineering/) / [Teknik](https://blog.adjiebrotots.com/id/kategori/teknik/): Power systems, software and the tools behind them, explained from practice. - [Personal](https://blog.adjiebrotots.com/en/category/personal/) / [Pribadi](https://blog.adjiebrotots.com/id/kategori/pribadi/): Life, work and moving between Indonesia and Australia. - [Others](https://blog.adjiebrotots.com/en/category/others/) / [Lainnya](https://blog.adjiebrotots.com/id/kategori/lainnya/): Everything that does not fit the other categories. ## Related sites - [Adjie Brotools](https://tool.adjiebrotots.com/): free browser-based calculators for tax, financing, property, engineering and data visualisation. LLM guide: https://tool.adjiebrotots.com/llms.txt - [adjiebrotots.com](https://www.adjiebrotots.com/): personal site of Adjie Brotosukmono