Privacy Policy

Last updated: 23/07/2026

Desly is a focus timer for macOS that tracks your posture during work sessions using the motion sensors in supported AirPods. This policy explains what Desly does and doesn't do with your data.

The short version: your posture data stays on your Mac, and the only thing the Desly app sends out is anonymous usage analytics that can't identify you.

What Desly collects

Posture and motion data. During a focus session, Desly reads head-motion data (orientation and pitch) from your connected AirPods to detect your posture. This data is processed on your device, in real time, to power the live posture indicator and your end-of-session report.

Session history. Your past sessions, including scores, graphs, and timing, are stored locally on your Mac so you can review them.

Where your posture data goes

Your posture and motion data never leaves your Mac. Desly does not send your motion data, posture scores, or session history to any server. There is no Desly account and no cloud sync for your posture data. It lives on your Mac, under your control, and deleting the app removes it.

Desly requests permission to access motion data from your AirPods (via Apple's Core Motion framework). This permission is used solely for the posture-tracking features described above. macOS will ask for your consent before Desly accesses this data.

Anonymous usage analytics

To understand how Desly is used and to improve it, Desly collects anonymous, aggregated usage analytics through a privacy-focused service called TelemetryDeck. This helps us answer questions like "how many people start a session" or "which features get used", never "who is this person" or "what is their posture".

TelemetryDeck is designed for privacy: it does not use device fingerprinting, does not build advertising profiles, and does not collect data that personally identifies you. The signals Desly sends are things like app opens and feature usage, not your posture data, scores, or session content, which remain on your device as described above.

You can review how TelemetryDeck handles data here: telemetrydeck.com/privacy

AI features

Desly uses Apple Intelligence to help make sense of your posture data, for example by summarizing your session trends. This processing runs entirely on your Mac using Apple's on-device Foundation Models. Your session data is not sent to Desly, to Apple, or to any third party for these features. It stays on your device, exactly like the rest of your posture data.

This website

Everything above describes the Desly app. This section covers desly.app, the website you are reading now.

Visitor analytics. The website uses DataFast, a lightweight analytics service, to measure traffic: which pages are viewed, where visitors arrive from, and roughly which country, browser, and device type they use. DataFast sets a cookie and processes visitors' IP addresses to do this, and it is used only to understand how the site is found and read. Because of that cookie, analytics loads only if you agree when the site asks, and not at all if you decline. You can change your answer at any time with the "Cookie settings" link in the footer. It is not connected to the Desly app, it never sees your posture or session data, and it is not used for advertising. You can review how DataFast handles data here: datafa.st/privacy-policy

Hosting logs. The website is hosted on AWS Amplify. Like any web host, it keeps standard server access logs of requests made to the site, which typically include the IP address, timestamp, requested page, referrer, and browser user agent. These logs are generated automatically by the hosting infrastructure, are used for security and troubleshooting, and are retained by AWS under their own terms. See Amazon's privacy notice for details: aws.amazon.com/privacy

None of this website data is linked to your use of the Desly app, and none of it contains posture, motion, or session information.

Purchases

If you buy a Desly founding license, the payment is processed by our payments provider, Lemon Squeezy, who acts as the merchant of record. Desly does not see or store your payment-card details. Lemon Squeezy handles your purchase information under their own privacy policy, which we encourage you to review: lemonsqueezy.com/privacy

Beta testing (TestFlight)

If you use Desly through TestFlight, Apple may collect certain information as part of the TestFlight program, such as basic usage and crash data, under Apple's own privacy policy. This is handled by Apple, not by Desly, and helps us fix bugs during the beta. See Apple's privacy policy for details: apple.com/legal/privacy

Children

Desly is not directed at children under 13 and does not knowingly collect data from them.

Changes to this policy

If Desly's data practices change, for example if a future version adds features that require handling data differently, we'll update this policy and the "last updated" date above.

Contact

Questions about privacy? Reach out: support@desly.app

Desly is an independent product built by David Cesar Vittori, based in Portugal.