かつや

かつや is listed on Google Play as a food & drink app. This SelfWander guide combines the linked listing with our practical decision criteria; it is not a hands-on performance test.

The publisher’s short description: “With the app, you can always have your usual "Katsuya 100 yen discount coupon" at your fingertips!”. This describes the publisher’s positioning, not an independently measured result.

Does it solve your task?

For かつや, our starting point is practical: choose one concrete task and follow it from start to finish. Compare the required setup, account access and any payment step with the result you get; a long feature list is not enough to establish usefulness.

Location and battery trade-off

This is a topic raised by the Google Play listing for かつや. Try the location features on a familiar route before depending on them somewhere new. Check whether background location is necessary for your task, and compare battery use with the access level you allow.

Total purchase cost

This is a topic raised by the Google Play listing for かつや. Compare the final checkout total, delivery time and return conditions with another seller. A large advertised discount is not useful if shipping, eligibility rules or return costs outweigh it.

Control over files

This is a topic raised by the Google Play listing for かつや. Review the proposed file changes before confirming them, and keep an independent backup of important material. A storage-saving estimate does not tell you whether a file is safe to remove.

What the evidence does—and does not—show

The figures shown here are a dated snapshot from Google Play, checked on 2026-10-22. The install band is a store figure and should not be read as current active users. Regional listings, prices, availability and ratings can change; consult the linked source before deciding.

Cost and permissions before installation

Check the current store price and any subscriptions or in-app purchases. A no-cost download does not mean that every feature or service is free. Read the publisher’s privacy disclosure and terms, and grant only the permissions needed for your intended use.

Our decision rule for かつや: continue only if the current listing matches your device and the task you want to complete. If a necessary feature, fee or support condition is unclear, resolve that on the publisher or store page before spending money or providing sensitive information.