Battery Health - Charge Alarm is a free iPhone app developed by Junaid Mukadam. It falls under the category of Utilities & Tools and aims to help users maintain their phone's battery health and save energy.

The main feature of this app is its ability to notify users through a ringtone and notification when their phone's battery is fully charged, even in silent mode. By removing the charger when the battery is fully charged, users can prevent overcharging and extend their battery's lifespan.

Additionally, Battery Health - Charge Alarm provides a charging history feature that displays the 30-day charging state of the phone. This can help users track their battery's charge and discharge rate. The app also offers a Charger Time State feature, which helps users understand the battery charging speed by showing the percentage of battery charge at specific times.

Please note that there is a purchase amount and period purchase associated with the app's trial or intro period. Subscriptions will automatically renew unless canceled within 24 hours before the end of the current period. Users have the option to cancel anytime through their iTunes account settings.