Dracula Devlog — Aug 15, 2026

Today’s standup for Dracula — the blood-sugar logbook that never leaves your phone. All on-device, no accounts, no telemetry.

What I worked on

A polish-and-ship sprint: security hardening, trends correctness, and logging ergonomics. Closed out PRs #74 through #91 (35 commits today).

What got done

Security — app lock shipped (#75)

• Hashed PIN storage, plus a PIN setup and change UI
• PIN fallback when biometrics aren’t available
• Track last_active on pause

Trends correctness (#76, #83, #84)

• New reading-band classifier service; fixed time-in-range band classification
• Chart Y-axis now derived from the data instead of hardcoded
• Distinct feed dot colors for high vs carb

Navigation (#79, #82)

• Tab state now survives with IndexedStack
• Fixed hero-tag and trends-refresh regressions

Logging ergonomics (#80, #81, #85, #88, #90)

• Delete entries from edit screens, and swipe-to-delete
• Log refreshes after add/edit
• Empty-state CTAs on the log
• One-tap quick-log for glucose
• Premade meal presets fill macros

Today screen (#77, #89)

• Labeled sparkline + streak badge
• Latest-reading timestamp in the KPI

Onboarding & export (#87, #91)

• Guided setup with a working restore
• TXT export wired into Settings

Settings fix (#78)

• Target-range dialog prefills with a bare number

Docs

• Rewrote AGENTS.md for the current architecture; ticked off the completed MVP 1 user stories

In progress

• Log filters (date-range + category) — branch is open with tests written, not merged yet.

What’s next

• Merge the log-filters branch
• App Store and Google Play submission
• CGM import (longer term)
• Keep the countdown moving toward the $500/mo sponsorware goal — hit it and the source opens

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Not medical advice. Dracula is a logbook and a calculator — insulin decisions are yours and your care team’s.