べんり箱 − 暮らしの便利な計算ツール

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Everyone
10+
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Content rating
Everyone
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About this app

"Benri-bako" is a free app that compiles small calculations for everyday life.

Currently, it includes three convenient calculation tools:

■ Unit Price Comparison: Which is more economical, refill or original?
It's often difficult to determine which is truly more economical when the contents differ. Simply enter the contents and price into this app, and it will calculate the unit price and sort them from cheapest to most expensive.

• You can compare up to 5 products simultaneously.
• It supports packages such as "original and refill sets."
• You can also point your camera at price tags to read and input the price and contents.

■ Microwave Heating Time Conversion: Have you ever been confused when the wattage on the package differs from your microwave's wattage? Simply enter the wattage and heating time on the package, along with your microwave's wattage, and it will calculate the optimal heating time.

* Handling of fractions can be switched in the settings.
* "Always slightly hot" and "Always slightly cold" can also be fine-tuned in the settings.

■ Comparing cash and card payments overseas: When paying overseas, it's meaningless unless you compare the "actual exchange rate" and the "rate including card fees," but isn't this calculation troublesome? Simply enter the price into this app, and it will calculate "how much each is in Japanese yen."
Then, just hold the camera over the price tag, and it will calculate one after another. It's easy to check the prices of various items in souvenir shops, etc.
* If you enter the exchange rate you used when exchanging money, it will display the actual "cash payment" amount in Japanese yen.
* If you enter the credit card fee, it will display the "card payment" amount including the fee.
* Supports 161 currencies.

■ Most calculations can be used offline.
Unit price comparison and microwave heating time conversion can be used even in places without a signal.
Exchange rate comparison also works without communication for cash payment calculations.
It only communicates when retrieving the current exchange rate.

■ Operated by
HACO Co., Ltd. (hacolife)
https://www.hacolife.com/
Privacy Policy
https://www.hacolife.com/privacypolicy/benribaco_privacypolicy/
Solve those little inconveniences in your daily life on the spot. You can do the calculations, but you tend to skip them because they're troublesome. In such situations, you can easily find the answer.
Updated on
Oct 3, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    App info and performance and Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

海外の買い物のための「為替レート比較」を追加しました。値札の金額を入れると、現金払いだと何円か、カード払いだと何円かを同時に計算します。

事前に自分が両替したレートとクレジットカード手数料を入れておけば、実際に支払う値段が分かります。161の通貨に対応しています。

カメラでの金額読み取りに対応しました。単価比較と為替レート比較で、値札にカメラを向けると数字を読み取って入力します。

はじめて開いたときに、触る所を順に示す「使い方」の案内を付けました。上の「使い方」からいつでも見直せます。

答えが出たときに効果音が鳴るようにしました。「このアプリについて」で画面ごとにオン・オフできます(マナーモードのときは鳴りません)。
Content rating
Everyone
Learn more

App support

Phone number
+81886763166
About the developer
HACO, K.K.
info@hacolife.com
2-62, MINAMISUEHIROCHO CASALE CORSO NO.7 TOKUSHIMA, 徳島県 770-0865 Japan
+81 88-676-3166