Blume Privacy Policy

Effective date: June 5, 2026

Blume helps users study by saving learning sessions, chat messages, settings, and uploaded learning materials. This policy describes the data handled by the app and its service providers.

Data We Collect

• Account and authentication data: Clerk may process sign-in identifiers such as user id, email address, and SSO provider information.
• Learning content: Convex stores session topics, chat messages, uploaded material metadata, extracted text chunks, embeddings, selected context, learning state, and Synapse ledger events.
• Learner memory: Convex stores a structured learner profile (topics, misconceptions, struggle patterns) and embedded memory snippets derived from tutoring sessions. This memory is assembled server-side each turn and may be included in prompts sent to model providers, similar to chat messages.
• Preferences: Convex stores settings such as chat text size, tutor personality, onboarding state, and learning flow state.
• Purchases: Adapty processes subscription and purchase status data from the App Store or Google Play.
• Technical data: the app and backend may process logs needed to operate, debug, secure, and improve the service, including model-call status, fallback behavior, latency, token usage, and cost estimates.
• Abuse-prevention signals: Blume may collect hashed device-install and IP-derived signals for fraud, security, and usage-abuse prevention. These signals are used to limit abusive model-call attempts and are not described as anonymous.

How We Use Data

We use this data to authenticate users, provide tutoring responses, retrieve relevant material context, keep learning history available, manage Synapse balances, process purchases, prevent fraud and abuse, secure model-call access, and support the app.

Uploaded materials and chat content may be sent to subprocessors so the tutoring features can work. OpenRouter processes chat completion requests. OpenAI processes embeddings for uploaded text so the app can retrieve relevant passages.

Tracking

Blume does not use collected data to track users across apps or websites owned by other companies.

Retention And Deletion

Signed-in users can permanently delete their account from Settings. This removes the Clerk account and account-linked Convex records, including sessions, messages, uploaded materials and files, learner memory, progress, readiness data, settings, and usage/billing history stored in Convex. The deletion is processed in bounded server-side batches and cannot be undone.

PostHog analytics and Adapty/App Store/Google Play purchase records are managed by those providers and are not removed by this in-app Convex/Clerk deletion action. Some provider, fraud-prevention, legal-compliance, payment, or service-integrity records may be retained as described in their applicable policies.

Service Providers

Blume uses Convex for backend storage and functions, Clerk for authentication, OpenRouter for chat model processing, OpenAI for embeddings, and Adapty for purchases and subscription analytics.

Contact

For privacy requests, contact Brian Wang at bwbis68@gmail.com.