# Battery Monitor App — user reviews > 20 indexed App Store user reviews of Battery Monitor App by Wern Jie Lim, rated 4.29/5 from 45 ratings. - Source: https://appshunter.io/ios/app/battery-monitor-app/id1182374760/reviews - App overview in markdown: https://appshunter.io/ios/app/battery-monitor-app/id1182374760.md - Rating breakdown: 5★ 28 · 4★ 9 · 3★ 3 · 2★ 3 · 1★ 2 ## Newest reviews (1 of 20) ### 5/5 — Incredible Battery App *2016-12-12, version 1.0* Ok I typically am not one to write reviews and have only done a handful in the app store. I have searched and tried numerous battery Apps both free and paid over the years. This App is by far the best on how precise the calculations are and the manner in which it was designed for the user. I love everything about it including the widget. This App is awesome, thanks so much for making. ## Most critical reviews (10 lowest-rated) ### 2/5 — Not very accurate. Needs to be rewritten for ipad *2020-04-14, version 1.2* I read that the app was very accurate on the iPhone (+/- 1%), but it’s not even close on my iPad. More like +/- 20%. Timing the recharge with my watch timer, an hour and rt mins turns out to be 2,5 hours to 100%, unless its the iPad thats jacked up, this app is WAY off on time left to recharge. I use my iPad constantly, and yet the app also tells me that i have 22 hours keft, even at 70%, which is absurd. My quest for an accurate battery app continues... **Developer response:** Hi there, Thank you for your honest feedback. I'll take note of that. However, I need to confirm if there's an error in the app's calculation or is there a calibration error. From your description, it sounds like the calibration was not performed correctly. Can you please try calibrating your usage and charging times again and report back the results? Alternatively, try contacting me at lwjdev@gmail.com, I'd be happy to assist you further. :) - Wern Jie ### 2/5 — Might Be Worthy *2018-10-31, version 1.1* Unfortunately, my iPhone 6s Plus is not updating the current battery level. I constantly have “100%” with a FULL battery icon until my phone loses power. I don’t want to constantly charge my phone but I don’t want to lose power at the worst time either. I hoped this app would process a real-time battery check & report the correct/adjusted level BUT this app uses the battery level reported by the iPhones’ iOS which is incorrect. Disappointing for me. 😔 **Developer response:** Hi there, Thank you for your suggestion. However, the app already shows when the phone battery is much more than the reported 100% by iOS and is completely full - it'll say "Battery Completely Full, Charging Stopped". You seem to be looking for the ability to see that the battery is filled to the max it could possibly handle so as your phone doesn't drain power at the wrong time, and it does report that. It seems like you have an odd use case of a battery app here (because iOS apps are actually not allowed to do so unless they manage to sneak past Apple's review) I would recommend you to take advantage of the $29 official battery replacement program discount that ends this year because it sounds like your phone is having an overly old battery that has degraded that could benefit from a battery replacement. At the same time, do note that it is not recommended for you to charge your phone to the absolute maximum that your phone can handle, as doing so will damage lithium ion batteries over time, hence the app displays the charge shown by the phone rather than an "adjusted" charge. You wouldn't want an app to lead you to further damage your battery, would you? This is also probably why you might have a problematic battery - you may have damaged the battery faster than normal by forcing it to keep as much charge as possible over a long period of time, and draining to 0% then charging to over the limit of 100% over and over again. Apple doesn't allow any new apps (or app updates) to display these information anyway unless they manage to sneak past apple, so this functionality is not included. Hope this helps! - Wern Jie ### 3/5 — Not very accurate for me. *2021-02-09, version 1.2* I tried to calibrate the app but it didn’t work and it still seems like the accuracy is very off. ### 3/5 — Decent I guess *2020-07-21, version 1.2* So I got this yesterday and it hasn’t been right on how long it would last every time last night I was using it it was saying it would last 7 hours then I went to sleep it said it would last 5 hours I’ve been using it for an hour and it says it will die in 53 minutes :/ **Developer response:** Hi there, Thank you for your feedback. Just to confirm, have you performed calibration within the app yet? It is necessary to do that to get accurate readings. - Wern Jie ### 3/5 — Suspicious app *2020-01-04, version 1.2* Noticed after downloading this app that my browser starting getting hijacked... Just an FYI. **Developer response:** Hello, This app has no permission to access the browser, nor does it even do anything other than checking the battery life of the phone, and extrapolating and predicting info from there. No app on an iPhone is allowed to access any other app directly. It has gained tens of thousands of downloads and nobody has ever experienced such a thing. If you ever need assistance, just send me an email or use the online feedback form. Hope this helps! - Wern Jie ### 4/5 — Not really that helpful… *2020-07-05, version 1.2* It basically tells you how much battery you have. It can say an estimation of how much time you have left but other than that, I don’t get the point of it. I can basically just see how much battery I have left. I want more info on my battery 🔋 🔋🔋 **Developer response:** Hi there, The app's primary purpose is to provide a significantly more precise estimation of your battery life after calibration, even up to +/-1 minute of accuracy, which is not information you can currently get from other apps or the system. The app also displays a decimal place after charging and leaving the app open for a few minutes - 72.5% instead of 72% for instance - which is a helpful way to see that your phone is topping up its battery, and visualise how fast your phone is charging. Hope that helps! :) - Wern Jie ### 4/5 — Keep It precise *2020-04-22, version 1.2* Make it show decimal places Whan Charging and When not charging and make it show decimal places immediately when we go in ### 4/5 — Accurate, needs more description *2019-12-19, version 1.2* This app is like magic, predicting almost the exact time I have left before my battery completely drains. I'm like, now how is this gonna work, but now it seams pretty accurate. When I first opened the app, it showed 77% of battery remaining and about 5 hours before battery goes completely down. This is about right from my estimations continuously using my iPad. The only thing I'd like is more description for the calibration screen. I hardly understand and any of it witch is why I'm only giving it four stars instead of five. **Developer response:** Hi there, Thanks for your feedback. I'll be improving the description of the calibration process in future updates. Thanks for using the app! - Wern Jie ### 4/5 — Clean and simple. *2019-10-05, version 1.2* I like it. My eyesight isn't the best and was looking for something simple that was easier to read. However, I do wish the text on the widget could be bold or larger. ### 5/5 — Get This App!! *2022-06-28, version 1.2* I’m not even joking if you want an app that saves your battery 🔋 tells you when it will die and when to unplug get this app it is so helpful my phone use to die so fast but after I downloaded this app it tell you what time you have left on it and the you don’t have to put your phone on low battery mode anymore! ## Most praised reviews (9 highest-rated) ### 5/5 — Brings the features that Apple should've had *2022-02-04, version 1.2* This is the perfect battery monitor app because it shows fractional battery percentage while charging, which Apple doesn't show anywhere. It saves me a lot of time from checking whether my phone is actually charging. It even has a dim black screensaver mode so I can see the battery percentage clearly at all times, whether charging or not. ### 5/5 — Insanely accurate *2021-03-07, version 1.2* If you have a worn out battery, you’ll need to calibrate the app before it gets to the perfect accuracy, but it’s awesome. And free too! ### 5/5 — Please keep updating *2021-02-26, version 1.2* This is the only app that means my needs for charging. I love this app so much please keep updating it ### 5/5 — Nicely done *2020-12-22, version 1.2* Have tried a number of battery apps. This is the simplest and best looking. ### 5/5 — Phone charger app *2020-11-24, version 1.2* This app is awesome thanks ### 5/5 — Perfect *2020-04-25, version 1.2* Don’t usually write reviews but it’s accurate and on point. I love how it’s on widgets. I hope there will be more and better updates to come. Simple and easy!!! ### 5/5 — iPhone 11 max pro *2019-09-21, version 1.2* The Numbers do not work with the iPhone 11 max pro very well. They are off a lot. this is the exact app I was looking for just hope it for y’all to update the app for the new phones this is what I wanted so bad !!!!! I also with u could see how much watts the iPhone is Taking in to the phone to see what the max wattage is inputting based on what charger that u have at the time ### 5/5 — Keeps good time *2019-06-27, version 1.2* If you’re wondering how many hours and minutes remain on your battery, this is a great little utility. Instead of just giving you a percentage remaining, it actually breaks it down to the various times remaining for changing, discharging, etc...Useful... ### 5/5 — Best battery for charging timr *2018-07-16, version 1.1* I had used Battery Magic and Battery Doctor apps which shows the remaining charging time before battery is fully 100% charged. This is very useful because I am cautious to not overcharge my iphone, iPads or Samsung tablets batteries. Knowing the time required, i.e. 2 hrs 39 min til 100% charge helps me when I am short on time. If I need to get started and drive , I will connect my external battery to my iphone. Thank you for developing the best battery app. I love knowing the time required for full 100% charge. In addition, it gives temperature of battery, time iphone/ipad disconnected from charging, and usage time. I have already shared with a friend already. The app is excellent so I wanted to wrote a detailed review which will help encourage other people to download this excellent battery app.😃😃😃😃😃 --- *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.*