# Battery Life Monitor: Drainn — Multi-Device Cloud Monitor > Cloud-based battery health and usage monitor for multiple Apple devices and BLE accessories. (iPhone/iPad app by Joao Pedro Oliveira Silva.) - Source: https://appshunter.io/ios/app/battery-life-monitor-drainn/id6478607186 (this page in markdown: same URL + `.md`) - Developer: [Joao Pedro Oliveira Silva](https://appshunter.io/developer/1733478583) - Category: Utilities - Price: Free - Rating: 4.10/5 from 59 App Store ratings · 17 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 14 MB - Languages: American English - Released: 2024-05-19 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/battery-life-monitor-drainn/id6478607186/reviews.md ## What is Battery Life Monitor? Welcome to Drainn, the comprehensive battery management app designed for iOS, macOS, watchOS, and iPadOS, as well as Bluetooth Low Energy devices. Drainn is your ultimate tool for maintaining optimal battery health across all your devices. Key Features: - Multi-Device Monitoring: View and manage the battery status of all your devices in one streamlined interface. - Battery Analytics: Dive deep into battery usage statistics with detailed analytics. Understand how your devices consume power and identify ways to improve battery life. - Session Tracking: Monitor individual charging sessions to see detailed battery usage patterns and optimize charging habits. - Export Data: Easily export battery stats to CSV for further analysis or record-keeping. - Low Battery Alerts: Never run out of power unexpectedly. Receive timely notifications when any of your devices need recharging. - Device Information: Access essential device information to stay informed about the health and status of each battery. Drainn is designed to be intuitive and user-friendly, making it easy for anyone to take control of their device’s battery health. Whether you're a tech enthusiast monitoring multiple gadgets or just someone looking to extend their device's battery life, Drainn provides the tools you need. Terms of use: http://drainn.jsp.im/terms-of-use.html ## Key features - Multi-device cloud monitoring - Battery usage analytics - Charging session tracking - Data export to CSV - Low battery alerts - Device information display ## Recent user reviews (10 of 17) All indexed reviews: https://appshunter.io/ios/app/battery-life-monitor-drainn/id6478607186/reviews.md ### 2/5 — Could be better *2024-06-04* I have this installed on 3 devices. It is always running in the background. It reports the battery level of all the devices but will only give a report on 1 device. The other 2 devices say ‘No Sessions’. The app could be useful, but so far, it’s just a battery drain. ### 3/5 — Still has issues *2024-05-28* In my last review I said that app did not sync between devices and MBA. It has finally synced but Mac is completely off. On my devices MBA showes as charging when it’s not and percentage completely inaccurate. **Developer response:** Thanks for reaching out. Can you send me more info about your problem at support@jsp.im? ### 3/5 — Apple Watch shows -100% *2024-05-28* Would be 5 stars if Apple Watch (I have a series 5) shower battery level. As it is it only shows -100%. I have the latest app version. ### 5/5 — App Won’t Load on MacBook *2024-05-27* I cannot get the app to open on my MacBook. It downloaded fine, but will not open. I downloaded it on my I phone and it started right up…. But not the case with MacOS. So can’t attempt to use “multi devices.” Both iPhone and MacBook have the most up to date OS updates (as of 5/25). Two days later….I’m updating my review. Everything is working as expected. The problem seemed to be that after I loaded on my MacBook it needed to be restarted. Prior to restarting and loading on your Mac be sure the blue tooth is also functioning between your iPhone and MacBook! The app is functioning perfectly and so I’m rerating my review to give the app a five star that it deserves. **Developer response:** Thanks for reaching out. Can you send me more info about your problem at support@jsp.im? ### 1/5 — Doesn’t recognize my Apple Watch *2024-05-26* Then it’s useless. Dev advised it’s fixed however my watch is still not seen. Wasted more time. **Developer response:** Thanks for getting in touch. We've fixed this issue in a later update. ### 1/5 — Watch SE always shows “-100%”… *2024-05-26* Please fix! ### 1/5 — Absolute Garbage! *2024-05-25* Can’t add a device and the help screens amount to little more than “who knows why it’s not working?” Don’t waste your time or money! ### 3/5 — App Won’t Load on MacBook *2024-05-25* I cannot get the app to open on my MacBook. It downloaded fine, but will not open. I downloaded it on my I phone and it started right up…. But not the case with MacOS. So can’t attempt to use “multi devices.” Both iPhone and MacBook have the most up to date OS updates (as of 5/25). ### 4/5 — Almost great… *2024-05-25* It works, but not with all Bluetooth devices. I tried 3 devices that do report the battery life to iOS, and only one of them showed up in this app. I noticed that the 2 that didn’t show up were Bluetooth headphones/speakers, while the one that did show up was a Bluetooth smartwatch (not Apple Watch). And the device that did show up didn’t update automatically, even when reloading the app. You have to remove and re-add it to show updated battery life. **Developer response:** Thank you for your feedback.  Regarding Bluetooth devices, as mentioned in the articles within the app, this is unfortunately a limitation imposed by Apple's Bluetooth stack and sometimes not all manufacturers report battery-related properties of their devices.  As for background usage, the app isn't always performing background operations (which would be counterproductive to its purpose). The way we update properties in the background is independent of the background fetch capability. ### 5/5 — 谢谢开发了这么好的应用! *2024-05-25* 非常感谢开发者，但使用中碰到了问题，我有多台相同设备，不知道怎么修改设备名称才能区分？另外好像不支持 airpods ? ## Frequently asked questions about Battery Life Monitor ### What does Battery Life Monitor: Drainn do? Drainn is a comprehensive battery management application that allows you to monitor the battery health and usage of multiple Apple devices (iOS, macOS, watchOS, iPadOS) and Bluetooth Low Energy devices from a single cloud interface. It provides detailed analytics and alerts to help you optimize battery life. ### What are the key features of Drainn? Key features include multi-device monitoring in a streamlined interface, in-depth battery analytics to understand power consumption, session tracking for charging habits, data export to CSV, timely low battery alerts, and access to essential device information. ### Is Battery Life Monitor: Drainn free to use? The application is free to download and use, with in-app purchases available. This allows users to access core monitoring features for free while offering additional functionality or advanced options through purchases. ### What devices are compatible with Drainn? Drainn supports a wide range of devices, including those running iOS, macOS, watchOS, and iPadOS. It also extends its monitoring capabilities to Bluetooth Low Energy (BLE) devices, making it a versatile tool for managing various gadgets. ### How can Drainn help me extend my device's battery life? By providing detailed battery analytics and session tracking, Drainn helps you understand exactly how your devices consume power. You can identify power-hungry apps or usage patterns and adjust your habits accordingly. The low battery alerts also ensure you can recharge proactively, preventing deep discharge which can impact long-term battery health. ## Version history (last 5 releases) ### 1.6.5 — 2024-06-05 Stability improvements and bug fixes. ### 1.6.4 — 2024-06-04 Stability improvements and bug fixes. ### 1.5.4 — 2024-06-01 Stability improvements and bug fixes. ### 1.5.3 — 2024-05-30 Stability improvements and bug fixes. ### 1.3.3 — 2024-05-27 Stability improvements and bug fixes. ## More apps by Joao Pedro Oliveira Silva - [Compressor: Video & Photo](https://appshunter.io/ios/app/compressor-video-and-photo/id6740047922) - [Easy Flash Cards Maker](https://appshunter.io/ios/app/easy-flash-cards-maker/id6744720982) - [Outfit Maker: Wardrobe](https://appshunter.io/ios/app/outfit-maker-wardrobe/id6749189586) - [Image to PDF: Scan Documents](https://appshunter.io/ios/app/image-to-pdf-scan-documents/id6752628770) - [Essay Helper: Phrasor](https://appshunter.io/ios/app/essay-helper-phrasor/id6758227937) All apps by Joao Pedro Oliveira Silva: https://appshunter.io/developer/1733478583 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*