RainBet

RainBet is an offline workspace for creators of paper-based card games. Draft custom card entries, organize them into test sets, arrange play scenarios and keep notes from manual test sessions in one structured place.
Create card entries
Add a title, numerical Ink cost, rarity, rules text and custom kinds such as Pact, Relic, Spell or Vessel. Fork an existing entry when you want to create a separate revision while keeping the original version.
Build structured sets
Combine saved cards in a Spindle, set a copy cap and add format tags and notes. Keep cards in separate Main and Side piles. Summary counts and the Ink curve are calculated from the card costs and copy quantities you enter.
Arrange playtest scenarios
Use Felt to place cards in Hand, Field, Grave and Exile zones. Move cards between zones, draw cards to your hand, run a five-card mulligan and save the current arrangement for later reference.
Record test sessions
Pair two saved Spindles, attach a Felt snapshot, adjust the score and write notes about the session. Scores, observations and review reasons are entered manually; the app does not evaluate card balance or test results for you.
Mark items for review
Flag a card from a trial and add a written reason. Search and filter saved cards and trials, or sort card entries by latest, name, cost, rarity and flagged status.
Privacy and control
The workspace works offline. Card text, set structures, Felt layouts and trial records are stored on the device. Profile controls include an option to erase the local workspace.
RainBet is a documentation and prototyping utility. It does not provide online matches, real-money features or automated performance analysis.