# Tesla - Metal detector and Magnetic field recorder — user reviews > 42 indexed App Store user reviews of Tesla by Exelerus, rated 4.40/5 from 117 ratings. - Source: https://appshunter.io/ios/app/tesla-metal-detector-and-magnetic-field-recorder/id990674516/reviews - App overview in markdown: https://appshunter.io/ios/app/tesla-metal-detector-and-magnetic-field-recorder/id990674516.md - Rating breakdown: 5★ 70 · 4★ 37 · 3★ 3 · 2★ 2 · 1★ 5 ## Newest reviews (14 of 42) ### 4/5 — Longevity of honesty *2021-09-24* Not offen you come across a product which serves a purpose and serves it well. Here’s to the mad hours dedicated to innovating the future. ### 5/5 — Very useful *2020-03-29* Easy to use and very good Thanks Dom ### 5/5 — How does it work *2019-12-03, version 2.1* How does this app work in layman’s terms? I need to find a electrical cable underground at home ### 4/5 — Working well *2019-11-06* I will be using this app to teach a science lesson. I will give students magnets of different strength and a ruler and leave it to them to create and answer their questions. The app itself works reliably on my iPad and iPhone. Any issues may be due to the device used and not the app. ### 4/5 — awesome *2019-02-11* This is really good I can stick my iPad to my dish washer ### 5/5 — Distinguish between ferrous and non-ferrous metals *2019-01-20* Easily distinguish between ferrous and non ferrous. Can also distinguish between type 304 and 316 stainless steel. Can’t beat the price. ### 5/5 — Intracranial shunt & EMF *2018-10-31* We use the app to test for EMF as interference can cause unexpected adjustment of the shunt setting which would be dangerous. The app works well as we could detect high levels proximal to microwave ovens and also refrigerator doors (magnets). Thanks ### 5/5 — Actually works *2018-10-28, version 2.1* I didn’t think this would work but to my surprise it did ### 3/5 — Good enough *2018-08-16* It could be further improved by: - identifying the three axis RGB (x,y,z) in the plane of the display. - do not stop the scale at 250 microtesla, but rather 5 mT. Or add a second scale 0-5mT ### 5/5 — Works well *2018-01-02* It does the job. I would appreciate more precise calibration and scale to go to 1000 mt ### 5/5 — Works *2017-09-25* Nice little app. Even if it may not be totally accurate, it's still worth knowing what EMF level you are exposed to. Do a test and bring a phone or iPad close and the results are astounding. ### 4/5 — Like Recording *2017-09-11* This app is a lot like others but the ability to record is great. ### 5/5 — Tessa *2017-08-04, version 2.1* Nice ### 5/5 — Found 1900's coins *2017-07-24, version 2.1* This app is amazing I found coins immediately and dug up and found some coins.awesome! ## Most critical reviews (10 lowest-rated) ### 1/5 — No funciona *2023-06-01, version 2.1* No detecta nada ### 1/5 — Not quite there yet? *2020-07-24* Froze screen almost immediately. Needs more work. ### 1/5 — Useless *2018-09-04* Brought it up next to a huge, strong neodymium magnet, and it a showed lower magnetic field strength than it did 3 feet away from the magnet in an open field. Frankly, I don’t believe this app works at all, I think it just randomly generates readings. But if it does work, it’s so inaccurate as to be useless. ### 1/5 — Horrible *2017-10-16* Second I changed the settings to, sensitive it wouldn't get a good reading even if I left it in the same place or in the middle of my yard where there should be no interference, The gauge continued to give readings all over the place from ZeRo all the way to the max never settling and just going back-and-forth back-and-forth ### 1/5 — Does nothing *2017-10-11* I held a cell phone with the camera turned on right up to the iPad with the app running and it registered NOTHING. I calibrated it like it says to and walked all over and the meter never changed from green, even right in front of computers, etc. It’s total bologna. ### 1/5 — Doesn't measure EM radiation *2017-07-17* This app appears to randomly generate numbers, possibly based on the gyroscope. Doesn't spike near wifi router or leaky microwave. ### 1/5 — Misleading *2017-07-17* Thought this was a hack for clash of clans, click bait, slippery, splash on your girl like she water, I got my medical degree from Dr Zuhair. Please give me a full refund bby ### 1/5 — Нифига! *2016-09-17* По его мнению, вокруг меня терминаторы) ### 1/5 — Doesn't work *2015-12-06, version 2.0* No response when I put a magnet close to my cell phone ### 2/5 — App has a bug *2015-10-31* I think this would be a great app for detecting magnetic fields if I could just exit the "settings" screen. The red "X" at the top right does not function. I have deleted and reloaded the app 3 times, this does not help. I am looking forward to exploring this app once this bug has been fixed. ## Most praised reviews (10 highest-rated) ### 5/5 — This app *2022-10-25* This app is very usefull to me ### 5/5 — Finding wireless antennas on devices *2022-10-19* I use the app to locate the wifi antennas on my devices (cell phones, iPad, computer etc). Then I can avoid putting that area near my body. I find it by scanning with my phone around a device and when the needle goes to red that’s the antenna giving out and picking up it’s dangerous level of wifi. I especially want children to see how certain areas of a device are important to keep at a distance. I also use interventions to reduce the level of dangerous emf such as pendants with coiled copy(counterclockwise) and high-quality obsidian, in addition to crystal in a resin. Yes they truly work if you have one correctly made. I have tested it by putting the pendant next to the antenna and the needle drops to low yellow or green. I also check for cell towers nearby. ### 5/5 — Limited range *2021-07-06* Great app. But no explanations. Maybe it could signal a coming seismic event? Thanks can you have an expanded meter scale above present limit? ### 5/5 — Colorful graphics *2021-03-16* This tool is simple to use for gaining an appreciation for the low level harmful unseen waves in confined spaces. I haven’t yet used this tool outside my living space. It is very exciting when sharing what such a feedback meter can reveal. Good job! ### 5/5 — Patriot *2021-03-06* The closer I got to the speaker the more the gauge increased ### 5/5 — ios version=Awesome vs.