Capture what matters
Keep notes, observations, and open questions together instead of losing context across separate apps.
SERPH FOR IPHONE
See the shape of a decision before you make it.
Serph is a private notes and decision-exploration app. It helps you turn scattered context into a life model you can review, then explore possible paths with clearer assumptions and tradeoffs. Serph is for adults age 18 and older.
YOUR CONTEXTNotes↓Life model↓Possible pathsYou review what Serph learns.
01 / HOW IT WORKSContext you can inspect.
Context you can inspect.
Choices you can explore.
Serph supports reflection and planning. It does not make decisions for you, and its AI-generated suggestions can be incomplete or wrong.
Build a life model
Review the facts Serph extracts from your notes and decide what belongs in your personal context.
Explore a decision
Map possible paths, assumptions, tradeoffs, and missing information before you commit to a choice.
02 / MEMBERSHIPOne Serph membership.
One Serph membership.
Two simple plans.
Subscribe securely through Apple. Manage or cancel from the Serph app or your Apple Account subscription settings.
$8.99 / month
Try Serph for 3 days
Eligible new subscribers can start with a three-day free trial. After the trial, the plan renews at $8.99 per month until canceled.
$98 / year
One payment for the year
The annual plan is charged when you subscribe and renews once each year until canceled.
Prices shown are U.S. prices. Plans renew automatically unless canceled. Apple displays the final localized price and any applicable tax before you confirm. See the Terms of Service for billing, cancellation, and refund details.
03 / PRIVACY
Your notes live on your device.
Serph stores notes, reviewed facts, and scenarios locally on your device. Your optional astrology birth date also stays in protected storage on that device. If you enable astrology for a scenario, Serph can send derived signs, but not your birth date. When you request AI analysis, only the question and relevant context needed for that request are sent to Serph's processing service and OpenAI. Your verified email account recovers membership access on another device without uploading or restoring your on-device note library.