Content Pack URLs
This is the canonical list of every starter content pack shipped in src/constants/packs.ts. URLs are the ones Ark actually downloads from; SHA-256 values come from the curated model pack manifest. Custom models and custom URLs registered by users go through ContentPackService and are not listed here.
ZIM
Kiwix ZIM archive packs. The content detail screen first tries Ark's native ZIM reader module when an archive is installed. Builds without the native reader keep the OS handoff to Kiwix or another reader.
Kiwix publishes SHA-256 sidecars by appending .sha256 to the ZIM URL. Ark stores those official checksum links in pack metadata, resolves the published hash before downloads when network is available, and verifies SHA-256 after download. Small files use Expo Crypto directly; large ZIM archives use Ark's chunked SHA-256 path so the archive is not loaded into memory at once.
| ID | Title | URL |
|---|---|---|
wikipedia-simple-en-nopic | Simple English Wikipedia | https://download.kiwix.org/zim/wikipedia/wikipedia_en_simple_all_nopic_2026-05.zim |
wikipedia-simple-en-mini | Simple English Wikipedia Mini | https://download.kiwix.org/zim/wikipedia/wikipedia_en_simple_all_mini_2026-05.zim |
medical-wikipedia-en-nopic | Medical Wikipedia | https://download.kiwix.org/zim/wikipedia/wikipedia_en_medicine_nopic_2026-04.zim |
wikivoyage-en-nopic | Wikivoyage English | https://download.kiwix.org/zim/wikivoyage/wikivoyage_en_all_nopic_2026-03.zim |
wikipedia-en-top100-nopic | English Wikipedia Top 100 | https://download.kiwix.org/zim/wikipedia/wikipedia_en_100_nopic_2026-04.zim |
PDF Guides
Direct PDF downloads. The reader renders pages on device, supports section jumps, and feeds extracted page text into RAG.
| ID | Title | URL | Source |
|---|---|---|---|
hesperian-first-aid | Hesperian First Aid (chapter from New Where There Is No Doctor) | https://hesperian.org/wp-content/uploads/pdf/en_nwtnd_2011/en_nwtnd_2014_03g.pdf | Hesperian Health Guides |
where-there-is-no-doctor-first-aid | Where There Is No Doctor (2011 edition, full book) | https://archive.org/download/WhereThereIsNoDoctor-English-DavidWerner/14.DavidWerner-WhereThereIsNoDoctor.pdf | Internet Archive (Hesperian original) |
us-army-survival-fm-21-76 | US Army FM 21-76 Survival Manual | https://ia601604.us.archive.org/28/items/Fm21-76SurvivalManual/FM21-76_SurvivalManual.pdf | Internet Archive |
HTML Snapshots (defuddle-extracted)
downloadStrategy: html_snapshot. Ark fetches the URL with Defuddle to strip the live page down to clean Markdown, stores it under the content directory, and indexes the result for RAG. These are the official government and public-health pages the library is anchored on.
| ID | Title | URL | Source |
|---|---|---|---|
disaster-power-outage | Power Outages | https://www.ready.gov/power-outages/ | Ready.gov |
disaster-floods | Floods | https://www.ready.gov/floods | Ready.gov |
disaster-earthquakes | Earthquakes | https://www.ready.gov/earthquakes | Ready.gov |
disaster-wildfires | Wildfires | https://www.ready.gov/wildfires | Ready.gov |
disaster-extreme-heat | Extreme Heat | https://www.ready.gov/heat | Ready.gov |
disaster-winter-weather | Winter Weather | https://www.ready.gov/winter-weather | Ready.gov |
food-preservation-usda | Food Safety During a Power Outage | https://www.foodsafety.gov/food-safety-charts/food-safety-during-power-outage | FoodSafety.gov (USDA/FDA) |
sanitation-hygiene | Personal Hygiene During an Emergency | https://www.cdc.gov/water-emergency/safety/guidelines-for-personal-hygiene-during-an-emergency.html | CDC |
Authored Guides
Markdown content that ships inside the app and is seeded by authored-guide-seed.service.ts. The full text lives in src/services/content/authored-guides.ts; the seed writes a local file and indexes it for RAG the first time the app sees each id. SHA-256 of the in-source markdown is used to detect when authored content has changed and to overwrite stale local copies.
| ID | Title | Category |
|---|---|---|
household-readiness | Household Readiness & Go-Bag | Preparedness |
emergency-water | Emergency Water | Water |
emergency-power | Emergency Power & Battery Discipline | Preparedness |
emergency-cooking | Emergency Cooking Without Utilities | Food |
foraging-basics | Foraging Risk & Poison Avoidance | Food |
personal-safety-conflict | Personal Safety & De-escalation | Safety |
offline-communications | Offline Communications | Comms |
sanitation-principles | Sanitation Principles | Water |
shelter-evacuation | Shelter, Evacuation & Exposure | Survival |
health-continuity | Medication & Health Continuity | Health |
Weather And Feeds
| Source | URL |
|---|---|
| Open-Meteo forecast API | https://api.open-meteo.com/v1/forecast |
| FEMA Disaster Declarations RSS | https://www.fema.gov/feeds/disasters.rss |
| NHC Atlantic Tropical Cyclones RSS | https://www.nhc.noaa.gov/index-at.xml |
| USGS Significant Earthquakes Atom | https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/significant_week.atom |
On-Device Chat Models
GGUF model packs downloaded by DownloadManagerService into Ark's models/ directory. Curated packs ship the SHA-256 that the upstream publisher exposes for the file; Ark re-verifies after download with chunked SHA-256. LlamaAdapter loads the first installed model in dev builds; the mock adapter is the Expo-safe fallback.
| ID | Title | URL | SHA-256 |
|---|---|---|---|
model-qwen25-15b-q4-0 | Qwen2.5 1.5B Instruct Q4_0 (~1 GB) | https://huggingface.co/Qwen/Qwen2.5-1.5B-Instruct-GGUF/resolve/main/qwen2.5-1.5b-instruct-q4_0.gguf | dcd819ff094852c38faba6873d8ff0c9d51eadb2844539e52042ae5d647bbfdb |
model-gemma4-e2b-it-q4-k-m | Gemma 4 E2B Instruct Q4_K_M | https://huggingface.co/unsloth/gemma-4-E2B-it-GGUF/resolve/main/gemma-4-E2B-it-Q4_K_M.gguf | 9378bc471710229ef165709b62e34bfb62231420ddaf6d729e727305b5b8672d |
model-gemma4-e4b-it-q4-k-m | Gemma 4 E4B Instruct Q4_K_M | https://huggingface.co/unsloth/gemma-4-E4B-it-GGUF/resolve/main/gemma-4-E4B-it-Q4_K_M.gguf | 519b9793ed6ce0ff530f1b7c96e848e08e49e7af4d57bb97f76215963a54146d |
model-smollm2-17b-q4-0 | SmolLM2 1.7B Instruct Q4_0 (~1.2 GB) | https://huggingface.co/QuantFactory/SmolLM2-1.7B-Instruct-GGUF/resolve/main/SmolLM2-1.7B-Instruct.Q4_0.gguf | 0b1491225b73a81885bfc190d1416e366d6698195285fbd4458caffaac99820e |
Users can also import a local .gguf file or register a custom URL through ContentPackService; those are not curated and do not ship a publisher SHA-256.
Embedding Models
Ark no longer ships embedding models as content packs. The embedding-models.ts registry now points at two ExecuTorch (react-native-executorch) text encoders, both of which are bundled with the native runtime on dev builds and resolved through the standard embedding context. RAG falls back to the deterministic ark-hash-v2 hash embedding when no ExecuTorch context is available (Expo Go, missing native module, no installed model).
| ID | Dimension | Family | Title | Notes |
|---|---|---|---|---|
executorch-multi-qa-minilm-l6-cos-v1 | 384 | ExecuTorch | ExecuTorch multi-qa MiniLM source search | Default. Balanced mobile retrieval with lower memory and faster indexing. |
executorch-multi-qa-mpnet-base-dot-v1 | 768 | ExecuTorch | ExecuTorch multi-qa MPNet source search | Higher-quality retrieval for newer phones, with more memory and indexing cost. |
The source-search model registry now lives in src/services/ai/embedding-models.ts. Historical content-pack model IDs are not carried forward in the fresh pre-release database baseline.
Safety Notes
- Do not ship mushroom or wild-plant identification content without expert local sources and safety review. The current
foraging-basicsguide is intentionally a risk-avoidance guide, not an identification guide. - Medical, AI, and weather content is reference-only and must be verified for critical decisions.