Your Data at Sokuho
On this page
These notes describe the Sokuho app and sokuho.app. As of September 12, 2026.
Who is responsible?
Björn Kindler · Kindler Dev · Bischofshofener Str. 9 · 82008 Unterhaching · Germany.
App and Apple Health
Sokuho runs the interval timer on your Apple Watch. Times, signal selection, and manual settings remain stored locally. There is no Sokuho account, and none of your workout or heart rate data is transmitted to this web server or to Kindler Dev.
With your permission, Sokuho saves workouts to Apple Health and reads your own workouts as well as the associated heart rate measurements for progress and history. The optional date of birth is used to calculate age; the date of birth and the age derived from it are not additionally stored permanently. A manually entered age remains in the local settings until you change it or delete the app data.
New workouts also include phases, breaks, and the basis for the heart rate zones at that time. This information is available along with the workout in Health. Apple’s storage, synchronization, and backup depend on your Apple settings.
You can control individual access permissions in the Health privacy settings and revoke them at any time. Health data processing occurs with your consent based on Art. 6(1)(a) and Art. 9(2)(a) of the GDPR. Without write permission, Sokuho will not start any Health training; without read permissions, history or zones may be missing. Withdrawal of consent does not affect the lawfulness of processing carried out prior to the withdrawal.
Uninstalling or deleting the app does not automatically remove existing Health workouts. Manage and delete these separately in Apple Health. Sokuho settings remain in effect until the app data is modified or removed.
When you visit the website
The web server is hosted by Hetzner Online GmbH, Industriestr. 25, 91710 Gunzenhausen, Germany. When the site is accessed, technically necessary connection data is processed, specifically the IP address, the time of access, the requested URL, and the information transmitted by the browser. Without this data transfer, the server cannot deliver the page.
The legal basis is Article 6(1)(f) of the GDPR. The legitimate interest is the secure and reliable provision of the website. Hetzner provides the hosting infrastructure as a service provider. We do not use visitor statistics and do not enable web access logs for Sokuho. Technical operational and security logs may be generated to detect and resolve errors or attacks.
Connection data is required to process the respective request. Any technical error or security data is only retained for as long as the specific incident is being investigated or resolved; system-wide logs are additionally subject to limited storage capacity and server rotation.
If you write to us
When you send an email, we process the sender’s address, the content, and any voluntarily provided information to respond to your inquiry. Please do not submit any health data. The legal basis for general inquiries is Article 6(1)(f) of the GDPR, based on our interest in processing your request; for contractual or pre-contractual inquiries, it is Article 6(1)(b) of the GDPR.
We retain correspondence for as long as it is necessary to address your inquiry and to handle any related follow-up questions. To the extent that a statutory retention obligation applies, the necessary information will be retained until the expiration of that obligation, based on Article 6(1)(c) of the GDPR. Email providers process messages as part of the technical delivery process.
Your Rights
Subject to the applicable legal requirements, you have the right to access, rectification, erasure, restriction of processing, and data portability (Art. 15–20 GDPR). You may revoke any consent you have given at any time with future effect (Art. 7(3) GDPR). To do so, please contact info@kindler-dev.de.
You may file a complaint with a data protection supervisory authority (Art. 77(1) GDPR), in particular at your place of residence, workplace, or the location of the alleged violation. For the provider, the Bavarian State Office for Data Protection Supervision is the point of contact.
Objection to Legitimate Interests
You may object to processing based on Article 6(1)(f) of the GDPR at any time due to your specific circumstances. In that case, processing will be terminated unless there are compelling legitimate grounds for continuing it or the processing is necessary for the establishment, exercise, or defense of legal claims (Article 21(1) of the GDPR).
Additional Information
We do not use your data for automated decisions with legal or similarly significant effects, nor do we engage in profiling. We do not transfer data via this website to recipients outside the European Economic Area. When you access external services on your own or use your Apple synchronization, their own privacy policies apply.
Standards Status
The GDPR provisions cited correspond to the consolidated version of May 4, 2016, including corrections; § 25 TDDDG corresponds to the legal status as of March 10, 2026. Corpus retrieval: August 8, 2026.