どっちが安い？どちやす

Do you ever find yourself struggling to decide what to buy when you're standing in front of the shelves at the supermarket or drugstore?

"500g for 398 yen" vs. "1.2kg for 880 yen"—which is the better deal?

"20% off" vs. "3 for 500 yen"—how do I compare them?

"Docchiyasu" is a price comparison app that instantly determines which is actually cheaper simply by entering the price and quantity. Even for products with different units or quantities, it converts them to a common standard such as per 100g or per 100ml, allowing for easy comparison at a glance.

■ Recommended for:

・Those who calculate unit prices with a calculator while shopping

・Those who want to compare the actual price of sale items and bulk purchase packs

・Those who want to correctly compare products with different capacities or units

・Those who want to know the true price after discounts

■ Main Features

【Unit Conversion Comparison】
Supports g, kg, mg (weight), ml, L (volume), cm, m (length), and 個, 枚, 本, 回, 袋 (quantity). It automatically converts and compares products with different units of measurement for fair comparison.

[Supports Discounts and Bulk Purchases]
Three types of discounts can be set for each product: "◯% OFF," "◯ Yen Off," and "N items for M Yen," allowing you to compare the effective unit price after the discount.

[Supports Quantity (Number of Packs)]
By specifying the number of items per pack, you can accurately compare bulk purchase packs with individual items.

[Calculate Directly in Input Fields]
Entering formulas like "298*1.1" in the price, quantity, or bulk purchase quantity/amount fields will directly reflect in the unit price calculation. Even without operators on the numeric keypad, you can insert them by tapping +, -, ×, and ÷ from the toolbar on the keyboard.

[Results Updated Instantly]
The unit price is recalculated in real time every time you enter a number. There is no need to press a confirmation button. The cheapest product will have a badge, and you can see at a glance the difference/percentage from the second cheapest product, as well as the actual savings if you were to buy it.

[Switching Display Criteria]
Simply tap the summary at the bottom to switch display criteria such as per 100g or per 1kg.

[Automatically Save Input]
The most recently entered information is automatically saved and restored the next time you launch the app.

[Designed for Quick Use in Stores]
A simple screen layout designed for one-handed operation in front of product shelves. Input fields are kept to a minimum, allowing you to reach results in seconds without confusion.

■ Pricing
All basic functions are free (with ads). There are no restrictions on the comparison function itself. The following auto-renewal subscriptions are available to hide banner ads and startup ads:

* Monthly plan (ad-free / auto-renewal every month)
* Annual plan (ad-free / auto-renewal every year)

Payment will be charged to your Google Play account at the time of purchase confirmation. Unless you turn off auto-renewal at least 24 hours before the end of the current period, it will automatically renew and the same amount will be charged. You can stop or cancel your renewal at any time from the Google Play Store app → (profile) → "Payments and subscriptions". The price will be displayed on the in-app purchase screen.

Terms of Use (End User License Agreement / EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Privacy Policy:
https://www.psytwo.net/privacy-policy/

■ Supported Environments
Compatible with both Android and iOS.