Stay Fit vs GymMane: Privacy-Focused Android Loggers

GymMane and Stay Fit both land in the "privacy-first, free-forever" category, but they get there from different starting points. GymMane is open source and built around a single, structural privacy guarantee. Stay Fit is closed source but offline-first, with a much wider feature surface. Both claims are legitimate. They're just different kinds of claims.

The core difference: verifiable vs architectural privacy

GymMane doesn't request the INTERNET permission in its Android manifest at all. That's a stronger and more specific claim than "we don't send your data anywhere." It means there's no network layer in the app for data to travel through, full stop, and it's checkable by anyone who reads the manifest or the open-source code itself.

Stay Fit's offline-first design means core logging, measurements, and photos never require a connection and aren't routed through a server by default. That's a real architecture decision, not a marketing claim. But because Stay Fit is closed source, verifying it requires trusting the stated design rather than reading the code yourself the way you could with GymMane.

Where GymMane's approach wins

A verifiable, code-level guarantee matters more to you than feature breadth. Maybe you specifically don't trust closed-source apps' privacy claims regardless of how they're worded. GymMane's missing INTERNET permission is a stronger and more concrete assurance than any policy page.

Its 6 built-in calculators and 360+ exercise database also cover genuine utility beyond basic logging. If you want to verify privacy yourself and you're comfortable with a narrower tool, GymMane is the pick.

Where Stay Fit's feature set wins

GymMane doesn't attempt goals, streaks, muscle-balance insights, or body measurement tracking. It's focused on logging and calculation tools specifically. Stay Fit covers the same core logging and extends into all of those areas, still without an account or a paywall, for users who want more than a verifiable-but-narrower feature set.

Checking GymMane's maintenance status

Open-source projects vary widely in how actively they're maintained, in ways a Play Store listing doesn't surface. If you're considering GymMane, checking its GitHub repository directly for recent commit activity is worth doing before relying on it as your primary tracker long-term.