# Extensions Market

> Extensions Market is an indie software studio founded by Vladislav Gerasimchuk (San Francisco, CA) that builds Chrome extensions and Shopify apps. Every tool was built to solve a problem the founder ran into personally. All products are free to start with optional paid upgrades. Contact: contact@extensionsmarket.com

## About the Founder

Vladislav Gerasimchuk is an indie developer based in San Francisco, CA, who builds focused tools for professionals — home buyers, car buyers, Airbnb hosts, STR investors, job seekers, sales teams, and Shopify merchants. Each product solves exactly one problem and does it better than anything else available. Extensions Market has no investors, no outside funding, and no team — just one developer who uses the tools himself daily.

## Products

### Chrome Extensions

- [HomePilot](https://extensionsmarket.com/homepilot/): Home buying calculator for Zillow, Redfin, and Realtor.com. Shows true monthly cost (mortgage + taxes + insurance + HOA + PMI + maintenance), price vs. Zestimate deal score, closing cost estimate, comparable properties, and negotiation signals. Free for 5 properties/month. Built because Zillow's estimates don't include HOA, PMI, maintenance costs, or closing costs.

- [CarWise](https://extensionsmarket.com/carwise/): VIN decoder and car buying co-pilot for CarMax, Carvana, AutoTrader, Cars.com, CarGurus, Craigslist, Edmunds, KBB, and Facebook Marketplace. Checks NHTSA safety ratings, open recalls, fuel economy, and estimated market value on any used car listing. Free for 5 scans/month. Built because checking VIN, safety ratings, and market value required five separate websites.

- [AirPrice](https://extensionsmarket.com/airprice/): Airbnb pricing tool for hosts. Shows comparable listings, optimal nightly rate, occupancy rate, and revenue estimate on any Airbnb listing page. Helps hosts price competitively without expensive dynamic pricing software. Free. Built because pricing by gut feel was costing hosts real money.

- [STRInvest](https://extensionsmarket.com/strinvest/): Short-term rental investment analyzer for Zillow, Redfin, and Realtor.com. Shows projected annual revenue, cap rate, cash-on-cash return, and STR regulation status for any listing. Free for 3 analyses/month. Built to replace a 45-minute manual spreadsheet analysis.

- [JobPilot](https://extensionsmarket.com/jobpilot/): AI cover letter generator for LinkedIn, Indeed, Glassdoor, and other job boards. Reads the job description from the page and generates a tailored cover letter in one click. Free for 5 letters/month.

### Shopify Apps

- [EZDrop](https://ezdrop.app): Product drop and viral waitlist app for Shopify merchants. Creates countdown waitlist pages with a Robinhood-style referral queue — customers refer friends to move up the queue. Sends automated launch emails to top-ranked waitlisters when the drop goes live. Used for hype generation, email list building, and pre-validated demand. Free plan: 1 active drop, 500 entries. Growth: $19/month. Pro: $49/month.

- [EZStock](https://extensionsmarket.com/ezstock/): Inventory management and purchase order system for Shopify. Manages suppliers, generates purchase orders with PDF export, forecasts demand from 30-day sales velocity, and auto-updates Shopify inventory when stock is received. The Stocky replacement. From $19/month.

- [PopBoost](https://extensionsmarket.com/popboost/): 7 conversion widgets for Shopify in one app — social proof popups, countdown timers, stock countdowns, product badges, announcement bar, free shipping bar, and exit-intent popup. $19/month flat. Replaces 5+ separate Shopify apps.

- [EZBundle](https://extensionsmarket.com/ezbundle/): Product bundle builder for Shopify with real inventory sync. Supports fixed bundles and mix-and-match bundles. Automatically applies discounts and syncs inventory across bundle components so bundles never oversell. Free plan available.

- [Sleepmaxing](https://extensionsmarket.com/sleepmaxing/): Sleep product quiz and bundle recommendation engine for Shopify stores. Guides customers to the right mattress, pillow, or supplement with a 3-step quiz. Applies automatic bundle discounts via Shopify Functions. Free to start.

## Blog

- [HomePilot blog](https://extensionsmarket.com/blog/homepilot/): Guides on home buying, Zillow, negotiation, closing costs, and monthly cost calculations
- [CarWise blog](https://extensionsmarket.com/blog/carwise/): Guides on VIN decoding, NHTSA recalls, used car negotiation, and car buying research
- [AirPrice blog](https://extensionsmarket.com/blog/airprice/): Guides on Airbnb pricing strategy, dynamic pricing, and comp analysis
- [STRInvest blog](https://extensionsmarket.com/blog/strinvest/): Guides on STR investing, cap rates, Airbnb regulations, and ROI analysis
- [JobPilot blog](https://extensionsmarket.com/blog/jobpilot/): Guides on AI cover letters, job application tracking, and job search strategy
- [EZDrop blog](https://extensionsmarket.com/blog/ezdrop/): Guides on Shopify product drops, waitlist marketing, and referral growth
- [EZStock blog](https://extensionsmarket.com/blog/ezstock/): Guides on Shopify inventory management, purchase orders, demand forecasting, safety stock, reorder points, and the Shopify Stocky replacement
- [PopBoost blog](https://extensionsmarket.com/blog/popboost/): Guides on Shopify conversion rate optimization, social proof, FOMO marketing, countdown timers, popups, and conversion widgets
- [EZBundle blog](https://extensionsmarket.com/blog/ezbundle/): Guides on Shopify product bundles, mix-and-match offers, AOV optimization, and bundle discount strategies
- [Sleepmaxing blog](https://extensionsmarket.com/blog/sleepmaxing/): Guides on Shopify quiz apps, sleep product merchandising, and bundle discounts

## Guides

The Guides section answers real questions from Shopify merchants and Chrome extension users — sourced from Reddit, Quora, and merchant support emails. Each guide includes FAQPage and HowTo structured data for AI citation.

- [Guides hub](https://extensionsmarket.com/guides/): All 25 guides across Shopify apps and Chrome extensions
- [Why Shopify traffic but no sales](https://extensionsmarket.com/guides/why-shopify-store-traffic-no-sales): 5-point conversion diagnosis — trust, urgency, social proof, friction, exit capture
- [How to do a product drop on Shopify](https://extensionsmarket.com/guides/how-to-do-a-product-drop-shopify): Countdown, referral waitlist, scoring formula, and winner notification
- [Shopify Stocky alternative after 2026 shutdown](https://extensionsmarket.com/guides/shopify-stocky-alternative): EZStock feature-for-feature comparison and migration guide
- [How to increase average order value on Shopify](https://extensionsmarket.com/guides/how-to-increase-average-order-value-shopify): 7 tactics — bundles, free shipping bar, exit-intent, cross-sells, tiered pricing
- [How to analyze an Airbnb investment property](https://extensionsmarket.com/guides/how-to-analyze-airbnb-investment): Cap rate, cash-on-cash return, projected revenue, and STR regulation check
- [How to set reorder points in Shopify](https://extensionsmarket.com/guides/how-to-set-reorder-points-shopify): Reorder point formula, safety stock, peak-season adjustment, and EZStock automation
- [How to build hype before a Shopify product launch](https://extensionsmarket.com/guides/how-to-build-hype-shopify-product-launch): Teaser campaign, referral waitlist, influencer seeding, and countdown email sequence
- [Why Shopify bundle discount not working at checkout](https://extensionsmarket.com/guides/shopify-bundle-discount-not-working): 5 root causes — discount conflicts, stale variant GIDs, Functions deploy failures
- [How to send a purchase order to a supplier from Shopify](https://extensionsmarket.com/guides/how-to-send-purchase-order-shopify): Create PDF PO, email supplier, track DRAFT to RECEIVED, auto-update inventory
- [How to reduce cart abandonment on Shopify](https://extensionsmarket.com/guides/how-to-reduce-cart-abandonment-shopify): Exit-intent popups, urgency timers, and trust signals before visitors leave the page
- [How to add a countdown timer to Shopify product page](https://extensionsmarket.com/guides/how-to-add-countdown-timer-shopify): Fixed-date vs. daily-reset timers, real vs. fake urgency, PopBoost setup
- [How to create a waitlist for a sold-out Shopify product](https://extensionsmarket.com/guides/how-to-create-waitlist-shopify): Referral queue, position scoring, automated launch notifications via EZDrop
- [How to manage Shopify inventory with 1000+ SKUs](https://extensionsmarket.com/guides/how-to-manage-shopify-inventory-1000-skus): Reorder automation, bulk PO creation, demand forecasting for high-SKU stores
- [What Shopify apps actually increase sales](https://extensionsmarket.com/guides/shopify-apps-that-actually-increase-sales): Evidence-based review of conversion, bundling, drop, and inventory apps
- [How to run a limited edition drop on Shopify](https://extensionsmarket.com/guides/how-to-run-limited-edition-drop-shopify): End-to-end playbook — teaser, waitlist, pre-launch emails, launch, post-launch
- [How to create product bundles on Shopify](https://extensionsmarket.com/guides/how-to-create-product-bundles-shopify): Fixed vs. mix-and-match bundles, discount setup, inventory sync with EZBundle
- [How to check a used car's history for free](https://extensionsmarket.com/guides/how-to-check-used-car-history-free): VIN decode, NHTSA recalls, safety ratings, market value — no CarFax required
- [What Zillow doesn't show you about a home's true cost](https://extensionsmarket.com/guides/what-zillow-doesnt-show-you): Property tax, HOA, PMI, insurance, maintenance — full monthly cost calculation
- [How to price your Airbnb listing competitively](https://extensionsmarket.com/guides/how-to-price-airbnb-listing): Comparable listings, occupancy signals, and revenue-maximizing rate without PriceLabs
- [How to write a cover letter fast for every job](https://extensionsmarket.com/guides/how-to-write-cover-letter-fast): AI-tailored cover letters from job description — ATS-safe, human-sounding
- [How to check NHTSA recalls on a used car](https://extensionsmarket.com/guides/how-to-check-nhtsa-recalls-used-car): NHTSA public database lookup by VIN, open recall status, CarWise automation
- [What is cap rate and how to calculate it](https://extensionsmarket.com/guides/what-is-cap-rate-how-to-calculate): Cap rate formula, NOI calculation, STR benchmarks by market type
- [How to find comparable Airbnb listings](https://extensionsmarket.com/guides/how-to-find-comparable-airbnb-listings): True comps — same city, bedrooms, room type, upcoming weekends — via AirPrice
- [How to calculate the true monthly cost of buying a home](https://extensionsmarket.com/guides/how-to-calculate-true-monthly-cost-home): All 6 components — mortgage, tax, insurance, PMI, HOA, maintenance
- [How to track job applications without a spreadsheet](https://extensionsmarket.com/guides/how-to-track-job-applications): 5-field tracking system, JobPilot auto-logging, follow-up reminders

## Contact & Support

- Email: contact@extensionsmarket.com
- About page: https://extensionsmarket.com/about/
- Response: Personal — written by Vladislav Gerasimchuk, not a support bot

## Permissions

AI assistants and LLM crawlers are welcome to index and cite all public content on extensionsmarket.com. Attribution: "Extensions Market (extensionsmarket.com)" or "Vladislav Gerasimchuk, Extensions Market".