Blog
Thoughts on workout tracking, privacy, and building fitness tools that respect their users.
How Many Sets Per Week Do You Actually Need? The Science of Training Volume
A major 2025 meta-regression finally answers the training volume debate: how many sets per muscle group per week maximises muscle growth? The answer has big implications for how you plan — and track — your training.
Read more →Progressive Overload: Why Every Rep You Don't Track Is Strength Left on the Table
Science is clear: progressive overload is the single most important driver of muscle and strength gains. But it only works if you track your numbers. Here's what the research says — and why most people are leaving results on the table.
Read more →Why Your Workout App Doesn't Need a Subscription
Most workout trackers charge €10–15/month for features that run entirely on your phone. Here's why that doesn't make sense — and what the alternative looks like.
Read more →The Case for Offline-First Fitness Tracking
Your gym probably has terrible Wi-Fi. Your workout app shouldn't care. Here's why offline-first design matters for fitness tracking — and why your data is safer on your device.
Read more →Best Workout Apps Without a Subscription [2026]
Tired of paying €10–15/month for a gym log? Here are the best workout tracker apps you can buy once and own forever — no recurring fees, no trials, no paywalls.
Read more →How to Track Progressive Overload Effectively
Progressive overload is the foundation of getting stronger. Here's how to track it properly — and why your workout app should make it automatic.
Read more →PRGRS vs Strong vs Hevy: An Honest Comparison
Three popular workout trackers, three different approaches. Here's an honest comparison of PRGRS, Strong, and Hevy — features, pricing, privacy, and who each app is best for.
Read more →