Disclosure: PricePing, the iPhone price tracker app, makes these tools. They are free, need no account, and work without the app.
Tools
Amazon link cleaner
Turn a long Amazon product link into the short /dp/ form and strip the tracking. Works for amazon.com, .co.uk, .ae, .sa and other Amazon stores.
Discount calculator
Work out a sale price, stack an extra discount on top (30% + 20% is 44%, not 50%), add sales tax, or find the % off between two prices.
Unit price calculator
Compare packs by price per kg, litre, ounce or item, including multipacks, to see which one is really cheaper.
Guides
For getting a ping when a price drops, see how to get notified when a price drops and all PricePing guides.
Try PricePing on iPhone. Share a product link from almost any store and get a ping when the price drops. Monthly plans start with a 7-day free trial.
