PriceLog - Price Logbook

PriceLog is not just another expense tracker. It is a personal price logbook for the everyday items you buy again and again.

For groceries, household goods, drinks, pet supplies, and other repeat purchases, the important question is often not just "How much did I spend?" It is:

• Is this more expensive than last time?
• Is the larger size actually cheaper?
• Did the package get smaller while the price stayed the same?
• Is this store usually a better deal?
• Is today's price low, normal, or high for me?

PriceLog helps you answer those questions by converting each purchase into a standard unit price, such as per 100g, per 100ml, or per item. As your records grow, each product builds its own reference price history with recent purchase price, lowest unit price, highest unit price, and price trend.

When the shelf price stays the same but the package gets smaller, the real unit price goes up. PriceLog helps you spot this kind of shrinkflation in your own purchase history by tracking both quantity and unit price over time.

The goal is simple: help you build a personal reference price list for the things you buy often. PriceLog does not scold you into spending less. It helps you remember what a fair price looks like.

Open PriceLog while shopping at supermarkets, local stores, or online. Instead of relying only on sale labels or bundle deals, compare today's price with your own history.

The app is designed with an analog receipt-inspired interface, including barcode details, date stamps, and paper-like dividers. Your shopping records feel less like a spreadsheet and more like a practical living price diary.

[Key Features

• Price Logbook: Save purchase price, unit price, store, rating, and short notes for each item.
• Automatic Unit Price Calculation: Convert prices into standard units such as per 100g, 100ml, or item.
• Shrinkflation Awareness: Notice when the package size changes and the real unit price rises.
• Reference Price Directory: Browse items with recent purchase price, trend, purchase count, unit basis, lowest unit price, and highest unit price.
• Price Trend Analysis: View charts, averages, lowest/highest prices, and purchase history for each product.
• Comparison Calculator: Compare products with different sizes and prices on the same unit basis.
• Monthly Spending Total: See the total amount spent in the selected month from the calendar screen.