
Prototype: what it is, the types, and when to use each
A prototype is a testable representation of a product before it exists. The honest guide on types of prototypes, when it’s worth the time, and the mistakes that bury the method.
News, updates, and insights from Otther on design, technology, and digital products
The Otther blog features content on UX design, digital product development, and product strategy, focused on helping companies build scalable, results-driven solutions. We share practical insights on idea validation, MVP development, user experience improvement, and digital product growth. Whether you’re building a new product or improving an existing one, you’ll find actionable insights here to help you make better decisions.

A prototype is a testable representation of a product before it exists. The honest guide on types of prototypes, when it’s worth the time, and the mistakes that bury the method.

The Certainties / Assumptions / Doubts matrix is the simplest product discovery tool. When to apply it, how to facilitate, and what to do with the result.

Jakob Nielsen’s 10 usability heuristics — with real examples and the pitfall in each one. The direct guide for those who want to apply, not memorize.

The empathy map without hype — when it makes sense to apply, how to fill it in, and the mistake that wastes most teams’ time.

How to think about a sales funnel without it becoming a dead spreadsheet — the honest guide, with clear stages and how to apply it to your digital product.