Loendur

What is Loendur?

Loendur is a simple, local-first counter app designed for speed and clarity. It lets you track habits, routines, work metrics, health data, or anything else without accounts, cloud sync, or tracking.

Key Features

• Works fully offline
• Flexible display modes (today, week, total, and more)
• History with notes and editing
• You can export individual counters or all data at any time as CSV or JSON for further analysis or use in other tools
• Optional hidden counters protected by a PIN for keeping sensitive data private (paid feature)
• Home Screen and Lock Screen widgets
• No accounts, no ads, no tracking

Hidden Counters

Loendur includes an optional Hidden Counters feature designed for privacy by design. Hidden counters are not visible in the main counter list unless explicitly unlocked by the user.

The interface is intentionally designed so that there is:

• No visible list of hidden counter sets
• No indication of how many hidden counters exist
• No way to discover hidden counters without the correct PIN

Hidden counters are never included in data exports and never appear in widgets. This helps ensure that private tracking remains private, even when exporting or sharing data.

Privacy First

Your data stays on your device. Loendur does not collect counter data, does not require sign-in, and does not connect to external services.