Yamma · Pre-launch plan

A free core. An optional Visit Pack.

We’re exploring a way to keep everyday record-keeping free, with a focused paid workflow for preparing a visit.

The app is in development. The price and paid workflow below are hypotheses to test before launch.

Proposed release model

Core

FreeEveryday record-keeping

  • Manual symptom records
  • Local record storage
  • Access to your diary
  • Basic portable record export · Planned

The first three functions exist in the current prototype. Free access at release and basic export are part of the proposed model.

Get the free worksheet now

PDF · Korean · 2 pages · Updated 10 October 2026

Pre-launch pricing hypothesis

Visit Pack

₩4,900One optional 30-day pass · No automatic renewal

  • Choose records from a date range
  • Reuse a visit preparation layout
  • Assemble a printable packet from reviewed records

Proposed tools for preparing a visit from records you have already checked.

Not available to purchase. Features and price may change after evaluation.

The proposed paid value is the preparation workflow: choosing a period, reusing a layout, and bringing reviewed records into a printable packet.

Your source records
Manual records, local storage, diary access, and planned basic portable export belong to the free core.
A 30-day window
The proposed pass gives access to the Visit Pack tools for 30 days, without automatic renewal.
After it expires
Core records and files already exported would remain available. Expiry would not remove them.

What we need to learn first.

Usefulness

Does it help someone prepare?

Observe how people preparing for follow-up visits choose records and organize questions.

Value

Is the paid step worth choosing?

Test the proposed workflow and price against the free worksheet and free record core.

Sustainability

Can we deliver it responsibly?

Estimate development, support, platform and payment costs before deciding what to offer.

These are planned validation steps. The model does not establish willingness to pay or revenue.

Help shape the plan.

Tell us which preparation tasks matter to you, or what is unclear in the proposed model. Please keep feedback about the product; do not send personal health records.

Brief · PDF · English · 3 pages · Updated 10 October 2026