Real-time POS that syncs your store and online inventory flawlessly.
Small retail business owners are frustrated with expensive and unreliable POS systems that fail to integrate with e-commerce platforms, causing constant inventory discrepancies and lost sales.
ShelfSync is a lightweight web-based POS system designed for small retailers, offering barcode scanning, sales processing, and instant inventory updates across physical and e-commerce channels. It integrates natively with Shopify and WooCommerce to prevent stock discrepancies. Setup takes minutes, eliminating the need for expensive hardware or complex configurations.
Small retail business owners managing both physical stores and e-commerce
Ultra-simple web POS with zero-config e-com sync, no hardware required—just a tablet or browser.
friendly
Automatically updates stock levels between POS sales and e-com platforms like Shopify.
Process sales, scan barcodes via webcam, accept payments via Stripe.
Central view of inventory, sales, and reports across locations.
Email/SMS notifications for reorder points.
Daily/weekly sales analytics with export to CSV.
Track repeat buyers and loyalty points.
Branded digital receipts via email/SMS.
CSV upload for initial inventory setup.
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| text | No | |
| stores | uuid[] | Yes |
Relationships:
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| user_id | uuid | No |
| name | text | No |
| ecom_platform | text | Yes |
| ecom_api_key | text | Yes |
Relationships:
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| store_id | uuid | No |
| sku | text | No |
| name | text | No |
| stock_qty | int | No |
| low_stock_threshold | int | Yes |
Relationships:
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| store_id | uuid | No |
| item_id | uuid | Yes |
| qty_sold | int | No |
| total_amount | int | No |
| timestamp | timestamp | No |
Relationships:
/api/storesCreate new store and connect e-com
/api/inventoryUpsert inventory items via CSV or manual
/api/saleProcess sale and update inventory/sync e-com
/api/reports/salesFetch sales data by date/store
/api/sync/statusCheck last sync status
100 transactions/mo
None
None
| Month | Users | Conversion | MRR | ARR |
|---|---|---|---|---|
| Month 1 | 200 | 5% | $350 | $4,200 |
| Month 6 | 1,200 | 8% | $2,880 | $34,560 |
ShelfSync keeps stock accurate across your shop and Shopify—no more oversells or manual fixes.
Post in r/smallbusiness and Shopify Reddit communities offering free lifetime Pro access for beta testers with physical stores. DM 10 owners from local Facebook retail groups. Attend one local chamber of commerce meetup to demo live.
Deep Shopify integration
Hardware required, expensive
No hardware, cheaper, multi-platform
Reliable payments
Weak e-com sync
Built-in real-time inventory sync
Data network effects from aggregated anonymized inventory trends for predictive alerts.
E-com growth post-pandemic + API maturity in platforms like Shopify makes sync feasible cheaply.
E-com API rate limits break sync
Queue jobs + caching
Users stick with incumbents
Free tier + easy migration
Barcode accuracy issues
Multiple scanner libs + testing
Success: 80% confirm pain + willing to pay $35
Success: Positive NPS >7
Success: 100 signups
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