Reisei, by Mu Works LLC. Last updated August 29, 2026.
Reisei is a private daily accountability app. This policy explains the information we collect, how we use and share it, and the choices you have. We do not sell personal information or use it for advertising.
Account information includes your username, a one-way hash of your PIN, an optional email for account recovery, and your time zone. Content includes your standard, daily check-ins and optional check-in notes, private Log entries, Bearing responses, Resets, recovery-mode information, Crew memberships, and acknowledgements. We also collect a push token if you enable notifications, plan and purchase status, and basic technical information such as platform and app version.
How we use it
We use this information to keep you signed in, record check-ins and consistency, provide Crew features, personalize eligible Bearings, support recovery-mode tools, manage subscriptions and sponsored seats, send account recovery messages, deliver notifications you enable, protect the service, and provide support.
Limited product telemetry
When you are signed in, Reisei records limited product events such as sign-in, check-in, Crew, Log, notification, purchase, export, and error events. A record can include the event name, your account ID, platform, timestamp, and limited event properties such as a check-in verdict or purchase interval. This telemetry is designed not to include your standard, check-in notes, or Log text. We use it to operate, troubleshoot, secure, and improve the service.
What you write and AI
When you save or update a Log entry, Reisei checks it for crisis language. If Anthropic is configured, Log text that does not trigger the initial rules-based check may be sent to the Anthropic Claude API for crisis classification. If the entry is not classified as crisis content and Voyage AI is configured, the Log text may be sent to Voyage AI to create a numerical embedding used to identify themes and personalize eligible Bearings. Anthropic may also help generate Bearing text from source material and derived signals.
Among the personal content described in this policy, this processing applies to Log entries, not daily check-in notes. Your Log and its embeddings are not shown to your Crew or a sponsoring facility. We use commercial API accounts. Provider handling of submitted data, including retention and any use for model improvement, is governed by the commercial terms and account settings in effect for our accounts.
What a Crew or sponsoring facility can see
A Crew can see your current standard and whether you held it, reported a break, or have not checked in. Crew members can also see your seven-day held, break, quiet, and recovered counts, your selected instruction for what to do when you go quiet, group membership and roles, and relevant acknowledgements. A sponsoring facility can see its claim codes and aggregate purchased, claimed, and available seat counts. Reisei does not show the facility who redeemed a code or what that person does in the app.
Who we share it with
We use service providers to run Reisei, including Vercel for hosting, Neon for the database, Amazon SES for email, Anthropic and Voyage AI for the processing described above, Expo for push notifications, and Stripe and RevenueCat for payments and entitlements. The information each provider receives depends on the service it performs. We may also disclose information when required by law or when reasonably necessary to protect users, the public, or the service.
Keeping and deleting your data
We keep your data while your account is active and as needed to provide the service. You can start account deletion in Settings under Danger zone and confirm it with your PIN. If you captain a Crew, deletion removes that Crew. If you own or administer an organization or facility, you may need to transfer or resolve related ownership, billing, seat, or record responsibilities before deletion can finish. Contact us if in-app deletion cannot be completed.
When completed, deletion removes your account and associated content from active systems and cannot be undone. Limited copies may remain in provider backups until overwritten, and we or our providers may retain records when required by law or reasonably needed for billing, fraud prevention, security, or dispute resolution.
To request deletion after uninstalling Reisei, email us with your username and, if you added one, the email on the account. We may ask you to verify ownership before deleting it.
Account deletion does not necessarily cancel a subscription billed through an app store or another payment provider. Cancel any active subscription through the provider that bills you.
Security
PINs are hashed with bcrypt, so we do not store the PIN itself. Data is encrypted in transit and encrypted at rest by our database provider. Authentication and database controls limit access to account data. No system is perfectly secure, but we work to protect your information and limit access.
Not a medical or crisis service
Reisei is not therapy, medical care, or a crisis service, and it is not a substitute for a professional. If you are in genuine distress, contact a real person or a crisis line. In the US, call or text 988 (the Suicide and Crisis Lifeline), or call 911 in an emergency.
Age
Reisei is intended for people age 17 and older. Do not use it if you are under 17.
Changes
If we change this policy, we will update the date above. For material changes, we will provide notice in the app or through another appropriate channel.