Skills
.Work. You
Rest

healthkit-queries

Community

Master HealthKit queries for fast, accurate data.

Data & Analytics#debugging#queries#iOS#time-series#data-aggregation#healthkit
AuthorNickChristensen
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill helps developers design and optimize HealthKit queries to retrieve accurate results efficiently, reducing debugging time and data discrepancies.

Core Features & Use Cases

  • Guided query construction for HKSampleQuery and HKStatisticsCollectionQuery with correct predicates, anchor dates, and interval handling.
  • Edge-case handling and debugging for time zones, DST, midnight boundaries, and data overlap vs start-date semantics.
  • Performance and reliability patterns for background delivery, authorization checks, error handling, and safe fallbacks in widgets and app contexts.
  • Use cases include implementing new HealthKit features, diagnosing "data is off" issues, and optimizing long-running time-series queries on large datasets.

Quick Start

Design an hourly active energy query between two dates by selecting the appropriate HKQuery type, applying a strictStartDate predicate, and executing the query to fetch samples or statistics.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: healthkit-queries
Download link: https://github.com/NickChristensen/HealthTrends/archive/main.zip#healthkit-queries

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
View Source Repository

Agent Skills Search Helper

Install a tiny helper to your Agent, search and equip skill from 223,000+ vetted skills library on demand.