PriceProof

What it does

Four free Shopify apps that handle the price/label rules small stores keep tripping on: EU "was-price" history for sale displays, GPSR product-safety info, EU textile fibre labels in the shopper's language, and Japan's dual-price (二重価格) record-keeping. Each app records or checks the data the rule expects and shows it on your storefront — install, pick your market, done. Built solo, all free, no upsells.

A focused studio building Shopify apps that turn each EU & Japan compliance rule into a clear, honest, one-line storefront display — prior 30-day prices, GPSR safety, textile composition, dual-pricing records. One app per regulation, grounded in the actual law.

PriceProof is a focused studio building Shopify apps for EU & Japan compliance — price history, product safety, textile labelling, dual-pricing, packaging reporting. One app per regulation, grounded in the actual law, shown only when the data backs it up. Compliance shouldn't be a legal maze for a merchant running a shop. It should be one line, handled. Every market keeps adding rules about what a storefront must show — the prior 30-day price behind a discount, who made a product and who's responsible for it, what a garment is made of, whether a “was” price is real. Each rule is small. Together they're a maze. We build one focused app per regulation — each one reads the data you already…from priceproof.app

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