Methodology, standards & development philosophy
TopPicksDaily was founded by Alwin Persson, a Swedish programmer focused on applied mathematics, logical systems, and high-performance web development.
Each calculator is manually developed using established mathematical formulas, official documentation, or widely recognized industry standards. Results are not approximations generated by automated systems — they are computed using clearly defined equations that can be independently verified.
- Real mathematical models: Finance tools use standard compounding and amortization formulas. Construction tools use geometric and material calculations. Health tools use established energy and metabolic equations.
- Manual validation: Edge cases and boundary values are tested before publishing.
- No black-box logic: Assumptions and limitations are stated clearly.
- Performance-first coding: Custom PHP and JavaScript with minimal dependencies.