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PriceWise, an automated price tracker

Paste a product link, enter your email, and get a message when the price drops or the product is back in stock.

Year
2023
Type
Web app
Built with
Next.js, MongoDB, Tailwind CSS, Cheerio, Nodemailer

Open the live siteCode on GitHub

What it does

PriceWise watches product pages for you. Paste a link and it reads the current price, keeps a price history, and emails you when something worth knowing happens. More than 500 people have used it to track over 10,000 products.

How it is built

  • Scraping. Product pages are fetched with Axios and parsed with Cheerio to pull out the title, image and price.
  • Storage. MongoDB holds every product and its price history.
  • Scheduled checks. A cron route re-scrapes every tracked product and updates its history, lowest and highest price.
  • Email alerts. Nodemailer sends a welcome email when you start tracking, then an alert when a product hits its lowest price, comes back in stock, or drops past a discount threshold.
  • Interface. Next.js and Tailwind CSS, with a carousel of trending products on the home page.