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Fix a dog’s chained medication reminder app with Claude Code

WorkedEvidence: Described by posterPosted Last checked

Tania Papazafeiropoulou used Claude Code to fix silent alerts and duplicates in Mario’s chained medication Expo app.

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Help me fix my Expo React Native dog medication app. Notifications must stay until tapped, sound must work in the background, chained steps must respect delays (ointment 20 minutes after drops), and I need a settings page so I can change times without editing code. Also stop duplicate snooze notifications.

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Goal: Repair and extend a dog medication reminder app so chained doses cannot be missed.

Questions to ask me first:
- What is the exact medication chain and timing?
- Which Android OEM quirks have we seen?
- Should settings allow adding new chain steps?

Inputs (fill in or confirm):
- Chain: [DROPS THEN OINTMENT +20M]
- Platform: [EXPO / ANDROID]
- Settings needs: [HOURS / DELAYS]

Rules:
- Sticky notifications must reappear if swiped on OEMs that allow it.
- Snooze scheduling must be concurrency-safe.
- Do not change clinical dosing—only reminder UX.

Checkpoint: Reproduce the sound and duplicate bugs before large refactors.

If you get stuck: If expo-notifications lacks an API, use a documented native patch and patch-package.

Verify before you finish: Background sound works; swipe cannot permanently clear a sticky dose; duplicates are gone in tests.

Output: Fixed app build plus settings UI for chains.

Done when: I no longer miss Mario’s drops.

AI tool

Claude Code

Outcome

Tania Papazafeiropoulou’s dog Mario needs timed eye drops then ointment twenty minutes later, plus other meds. A year-old Expo app had silent background notifications, swipe-away sticky alerts, and duplicate snoozes. With Claude Code (Sonnet 4.6) over a couple of sessions the sound field bug was fixed, Android sticky deleteIntent behavior was patched, an AsyncStorage race was replaced with an in-memory Set, and a settings UI for prescription changes was added—so drops are no longer missed.

Evidence: Described by posterThe person describes what happened in words, without screenshots or video.

Source

Posted
by Tania Papazafeiropoulou
Last checked
Method:
How we verify

https://tany4.com/blog/posts/marios-helper-v2

Context: Medicine names in the post are fictional stand-ins. October 2026 update notes a later rewrite from phone.

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