買っとく？ 在庫＆買い物リストをパートナー・家族で共有

Share your entire shopping list and inventory with your family or partner. Say goodbye to forgetting things or buying duplicates.

"Do we still have soy sauce?", "Did someone buy tissues?", "How many eggs are left in the fridge?"—The shopping sharing app "Should We Buy It?" solves these little everyday misunderstandings by allowing you to quickly share information with your family or partner.

Manage your household inventory and shopping list "together." Shopping notes that might get lost in LINE chats can be saved here for the whole family to refer back to anytime. It can be used for couples, families with children, and even sharing with parents, adapting to the number of people and relationships.


▼ Do you have these problems?

・You thought you bought it, but it's out of stock / You bought two of the same thing

・When asked to "buy something," you don't know what's left at home

・You're always the one in charge of shopping. Want to share shopping tasks effectively?

* Sending shopping lists via LINE is a bit of a hassle.

* Want to quickly check the contents of the refrigerator and stock while out and about?

"Should I Buy It?" solves all these "household shopping frustrations" in one app.

▼ Main Features

■ Real-time inventory sharing

See at a glance whether you have/are running low on/are out of food and daily necessities. Updates from any family member are instantly reflected on everyone's screen. No more wondering "What do we have left at home?" at the supermarket.

■ Quick registration with barcodes

Simply scan the product barcode for automatic product name entry. Supports manual entry, registration from presets, and registration with photos. Easily create an inventory list that's easy to understand at a glance.

■ Share shopping lists and flexible task sharing

Share your "shopping list" with your family. You can loosely divide who buys what, preventing situations where "nobody ended up buying it." Once you've finished shopping, your inventory will be updated with a single tap.

■ Share "Going Today" with One Tap

Share your upcoming store visit with your family, including your estimated arrival time. Requests like "Please pick up some milk while you're there!" will arrive in real time, reducing wasted time and misunderstandings.

■ Check Stores, Flyers, and Weather All in One Place

Register your frequently visited stores and quickly check flyers (sale information). Furthermore, the weather at your current location will give you hints like "Is now a good time to shop?" Shopping planning becomes smarter.

■ Send "Thank You" Messages

Send a "Thank You" to family or your partner who has bought things for you with a single tap. This system visualizes daily chores and shopping, allowing for natural appreciation of each other.


▼ How to Use It in Different Scenarios

・Working Couples: The first person to notice an item needs to add it to the list → the person closer to their destination buys it naturally.

・Couples Living Together: Share information about running out of daily necessities to avoid forgetting anything.

・Families with Children: Manage diaper, formula, and prepared food stocks together.

・Sharing with Parents: Support shopping for family members living far away.

▼ How to Use It is Easy

1. Log in with your Google account.

2. Invite family and partners with an invitation code.

3. Simply grow your inventory and shopping list together.

No special settings required. You can start using it immediately today.

▼ About Pricing

Basic use is free (ads are displayed in the free plan).

Upgrading to Premium (first month free) offers:

・Ad-free and comfortable use

・Suitable for large families with more members

・Unlocks the limit on store and inventory registrations

・Advanced search, etc.

Monthly fee ¥480 / Annual fee ¥4,600 (annual fee is more economical). Try it out thoroughly for free for the first month.

▼ Privacy Policy

Your data will only be shared within the "household (family/partner)" you invite. It will never be shared outside of your household. You can request account or data deletion at any time. For details, please see the privacy policy on our official website.


▼ Frequently Asked Questions

Q. How many people can use it?

A. Multiple people can share it even with the free plan. To increase the number of users, please upgrade to Premium.

Q. Will my family's schedules and personal information be visible?

A. Only shopping-related information, such as household inventory and shopping lists, will be shared.

Q. Is it easy to cancel?

A. Yes. You can cancel anytime from the subscription management section in the store.

Make your daily "Should I buy this?" smarter for the whole family. Start living a life free from forgotten items and duplicate purchases today. Try it for free now.