Cell Change

This app is made to manage the deadline of many batteries in homes and businesses.
Initial setup :
1. Register a battery device that uses batteries.
2. If you know the date when you start using the battery you are currently using, set that date.
3. Specify the number of days the battery will be used.
4. Register the scheduled replacement date of the battery in the calendar as an event.
What to do when changing batteries.
5. Select the appropriate device and press the button for battery replacement. The history is automatically created and the next scheduled date is set. If you are registered for an event on the calendar, the next event will be set automatically.

About the significance of this app:
In many homes and businesses, there are many battery appliances that use batteries.
For example, there are various other uses such as remote controls for TVs and air conditioners, game consoles, flashlights, radios, calculators, cookers, beauty equipment, vacuum cleaners, crime prevention equipment, air pumps for fish, etc.

I don't know when the battery will run out because there are many batteries in the equipment. You may have to go buy because there are no spare batteries.

Furthermore, due to low battery consumption, the same battery may be used for many years, resulting in battery leaks and other problems. In this case, the battery equipment may be damaged.
If you can understand how many batteries are used in which equipment, when they have been used, and when they should be replaced, you will be able to avoid troubles. You will also be able to know when to buy the batteries in bulk.
If this app manages the devices that use batteries, it will be easier to understand the frequency of battery replacement, and it will be possible to predict when the batteries will run out.

Cautions:
- If you have the same account, you can share information with multiple iPhones/iPads. In this case, there will be a slight delay in updating the data on devices other than the iPhone/iPad used for registration.
- In a usage environment where the network is not connected, data updated on other iPhones/iPads may not be updated.
- This app accesses the network in order to utilize the cloud services provided by Apple Inc.
- This app is intended to facilitate battery management. It does not have functions such as guaranteeing battery operation or predicting battery failure.
- This app assumes you have permission to take photos, access your photo library, and access your calendar.