Arachnid Master Keeper — Interactive Digital Tracker
One system for your tarantulas, scorpions, enclosures, feeding, molts, breeding, offspring, health, and collection records.
The HabitatCraft Arachnid Master Keeper is a downloadable, local-first tracking system built specifically for tarantula and scorpion keepers — from a single animal to growing collections and breeding projects.
Keep everyday husbandry records organized while tracking the details that matter to arachnid keepers, including feeding refusals, molts and instars, rehousing, breeding projects, spiderlings, scorplings, feeder inventory, and collection history.
Manage Your Arachnid Collection
Build detailed records for tarantulas and scorpions including species and scientific name, name or collection ID, sex, life stage, instar, morph or color form, locality or population, line and lineage, captive-bred/captive-hatched/wild-origin status, acquisition date, source, cost, current size and weight, collection status, and notes.
Enclosure & Rehousing Records
Keep your animals connected to their current setups and maintain a full history as your collection grows. Track terrestrial, arboreal, fossorial, communal, breeding, grow-out, and quarantine enclosures with records for dimensions, substrate type and depth, hides and burrows, water source, ventilation, temperature, humidity, setup dates, and rehousing history.
Feeding & Molt Tracking
Keep individual feeding histories including prey type, size and quantity, accepted feedings, refusals, pre-killed prey, prey removal, next feeding date, and feeding notes.
Build a dedicated molt history for each animal:
- Pre-molt observations and last meal before molt
- Molt date, successful/problematic/incomplete molt status
- New instar and post-molt size
- Exuviae sexing records
- First meal after molt and molt notes
Growth & Behavior
Record changes and observations over time including size and growth, weight, body condition, behavior, webbing, burrowing, and general observations.
Tarantula Breeding Projects
Track tarantula breeding from mature males through spiderling production:
- Male maturity molt and sperm web observations
- Pairing dates, courtship, and mating observations
- Egg sac dates, sac pull or opening dates
- Egg and eggs-with-legs counts, viable offspring and spiderling counts
- Holdbacks, project status, and notes
Scorpion Breeding & Brood Tracking
Scorpions receive their own breeding workflow built around live-bearing reproduction:
- Pairing dates, courtship, and mating observations
- Gestation records, birth dates, and initial brood counts
- Maternal carry and first-instar notes
- First molt / second-instar dates and dispersal dates
- Surviving scorpling counts, later brood and sperm-storage notes
Offspring & Grow-Out
Manage spiderlings and scorplings after reproduction with grow-out groups, container IDs, breeding project association, stage and instar, current counts, housing, molt dates, food, losses, holdbacks, available offspring, and sales and rehoming records.
Health, Quarantine & Maintenance
Keep important collection records together:
- Health observations, quarantine, injuries, molt complications
- Mite and pest observations, dehydration concerns
- Treatment or intervention records and outcomes
- Water and dish maintenance, spot cleaning, substrate maintenance
- Full enclosure servicing, ventilation checks, breeding-setup maintenance
- Next-due maintenance dates
Feeder Inventory, Supplies & Collection Finances
Track the operational side of keeping a larger collection:
- Feeder inventory with sizes, quantities, and low-stock thresholds
- Enclosures, substrate, tools, breeding supplies, and shipping/sales supplies
- Equipment costs, animal purchases, and expenses
- Arachnid and offspring sales, other income, and trades
- Collection income, expenses, and net totals
Tasks & Collection Timeline
Create one-time or recurring tasks for feeding, water, molt checks, rehousing, breeding checks, offspring checks, maintenance, feeder inventory, and other collection work. The dashboard brings due and overdue work together, while the unified collection timeline creates a chronological history of activity across your animals and projects.
Your Records Stay With You
The Arachnid Master Keeper runs locally in your web browser. No account required. No subscription. Your working records are stored locally on your device. Download full JSON backups for safekeeping or transfer your records to another browser or device. CSV exports are also included for individual record sets.
What's Included
- Arachnid Master Keeper HTML application
- Quick Start PDF
- README / setup instructions
Download the ZIP, extract the files, open the Master Keeper in a modern browser, and start building your collection records.
$17.99 — Instant Digital Download
Digital product only. No physical item will be shipped. HabitatCraft Master Keeper tools are designed for organization and record keeping. They do not diagnose disease, interpret test results, prescribe treatment, or replace appropriate professional care.