Comparison

Toolbox vs Smart Metal Detector & EMF

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Toolbox

Transform your device into a versatile toolkit with a comprehensive suite of measuring instruments. This app offers a metronome, stopwatch, timer, ruler, level, and various sensors to assist with a wide range of tasks.

Highlights
  • Metronome
  • Stopwatch
  • Timer
  • Ruler
  • Surface Level
  • Barometer
  • Altimeter
  • Compass
Features
Read full description

The most handy measuring tool kit in the world. Turning your iPhone or iPad into a multi functional measuring device with: metronome, stopwatch, timer, seismometer, ruler, surface level and many more. Currently, there are 13 measuring tools + Flashlight in the tool box: - BAROMETER It gives you a nice and clear local atmospheric pressure, obtained from the barometric sensor in your device - ALTIMETER This tool takes advantage of the built in GPS to give you the precise elevation above the sea level. - COMPASS A pretty and well-made compass for navigation, traveling and direction reference purposes. - TESLAMETER It takes advantage of the built-in magnetometer in your iPhone/iPod touch, allows you to monitor the strength of magnetic field all around. There are a range of real-life applications for this useful item, such as: metal detector, AC magnetic fields, or finding low-magnetic places for sleeping - METRONOME It is the most precise and stable metronome on the app store. Whether you are a musician, a music teacher, a beginner at playing music or even a golfer, this tool provides you a set of powerful features that can satisfy all your needs. - STOPWATCH Whenever you need a precise and professional stopwatch for sport activities like: sprints, jogging, this tool is a must have. Among its features are: intuitive interface, lap and split modes support, or send log results to your email - TIMER There are unlimited applications of using timer in daily life, such as: egg timer, tea timer, cooking, alarm clock, etc. The timer tool satisfies all of those needs by many of its features: up to 5 timers running simultaneously, count down and count up support, intuitive and convenient duration setup using preset and gestures - SEISMOMETER Taking advantage of the built-in accelerometer in your iPhone, this tool detects and visualizes any vibrations and moves of the iPhone. So, why not using this excellent feature to help your iPhone self-protected like a car when combined with an alarm? Or another great application is to test how smooth the car is on a test drive - PLUMB BOB This is an instrument to check if an object is perfectly vertical/plumb and has been used since the time of the ancient Egyptians. It suits any types of your needs, such as: hanging objects, carpenter work, brick layer or building construction - SURFACE LEVEL This tool facilitates the measurement of the slope of whatever surface you want to check. Most importantly, its accuracy is ensured at the maximum level by the support to different sensitivities that allow you to detect subtle slopes (floor leveling, furniture arrangement,..) - SPIRIT/BUBBLE LEVEL It is a simple but extremely useful tool in the set to check if an object is balanced. Its applications range from entertained purposes such as checking pool billiard tables in the bar to serious usages like constructions, carpenter, etc - RULER The ruler helps you precisely know the lengths of objects all around you, such as pens, tables, pictures. We built it to become even more than just a normal ruler: longest distance measuring capability, and up to 6 units support - PROTRACTOR Have you ever forgotten your protractor at school or when you urgently look for a protractor to measure any kind of angles in real life?

About

Smart Metal Detector & EMF

This tool uses your phone's magnetic sensor to detect nearby metal by measuring magnetic field strength. It alerts you with vibrations and sounds when metal is close, and can help locate hidden devices or electrical wires.

Highlights
  • Detects metal using magnetic sensor
  • Measures magnetic field strength (EMF)
  • Vibration and sound alerts
  • Adjustable sensitivity
  • Locates electrical wires and pipes
  • Scans for hidden devices
Features
Read full description

Metal Detector is an iOS application that detects the presence of metal nearby by measuring the magnetic field value. This useful tool uses the magnetic sensor built into your mobile device and shows the magnetic field level in μT (microtesla). The magnetic field level (EMF) in nature is about 49 μT (microtesla) or 490 mG (milligauss); 1 μT = 10 mG. If any metal is nearby, the value of the magnetic field will increase. The metal detector allows you to identify any metal object in the area because all metals generate a magnetic field whose strength can be measured with this tool. The usage is simple: launch this app on your mobile device and move it around. You will see that the magnetic field level shown on the screen is constantly fluctuating. Colorful lines represent the three dimensions and the numbers on top show the value of the magnetic field level (EMF). The chart will increase, and the device will vibrate and make sounds, announcing that the metal is close. You can change the sensitivity of vibration and sound effects in the settings. You might use the Metal Detector to find electrical wires in walls (like a stud finder), iron pipes on the ground... or pretend it's a ghost detector and scare someone! You can also use this magnetometer as a scanner to find hidden devices – cameras, microphones, or voice recorders! Metal Detector is available in the language set on your phone – now also in Russian, Spanish, and Indonesian! You can also find it in Portuguese, Turkish, and French. Now the app also has its versions in Arabic and Farsi! If you enjoy the app and want even more – you can get a pro version! Check it out in the application menu. The accuracy of the tool depends entirely on the sensor in your mobile device. Please note that due to electromagnetic waves, the magnetic sensor is affected by electronic equipment. Metal Detector cannot detect gold, silver, and coins made of copper. They are classified as non-ferrous, which has no magnetic field. But maybe you will find a metal box with some treasure inside! Try this useful tool and other apps from the Netigen Tools series! Attention! Not every model of a smartphone has a magnetic field sensor. If your device does not have one, the application will not work. Sorry for the inconvenience. Privacy Policy: https://zipoapps.com/metaldetectorios/privacy Terms & Conditions: https://zipoapps.com/metaldetectorios/terms

Screenshots

Toolbox4 screens
Smart Metal Detector & EMF4 screens

Verdict

The call

The clearest difference is ratings volume: Toolbox at 14K against Smart Metal Detector & EMF's 270. Toolbox also leads on update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (8.0 vs 16.0). On price, rating, review sentiment and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Toolbox sells 1 one-off in-app purchase and Smart Metal Detector & EMF sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Toolbox holds the better App Store score, 4.5 against 4.4. That said, the two scores are not equally well evidenced: Toolbox has 14K ratings behind it against 270, so its average is the more settled of the two. Written reviews point the same way: 63% of Toolbox's written reviews are positive against 62% of Smart Metal Detector & EMF's.

UpkeepUpdate frequency

Toolbox ships an update every 2 weeks, Smart Metal Detector & EMF every 6 weeks. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
Toolbox versus Smart Metal Detector & EMF: the parameters behind the verdict, then further details
ParameterToolboxSmart Metal Detector & EMF
PriceFreeFree
Rating4.5 (14K ratings) — better4.4 (270 ratings)
Positive reviews63.1% of reviews — better61.5% of reviews
Number of ratings14K — better270
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better16.0
Further details — not scored
Size32 MB118 MB
Age rating4+4+
DeveloperSkyPaw Co., LimitedZipoApps

Customer experience

Toolbox

All ratings13,834 ratings
Positive89.5%
Neutral5.2%
Negative5.3%
Written reviews878 reviews
Positive63.1%
Neutral8.2%
Negative28.7%

Smart Metal Detector & EMF

All ratings269 ratings
Positive84.4%
Neutral3.7%
Negative11.9%
Written reviews13 reviews
Positive61.5%
Neutral0.0%
Negative38.5%

Bugs and requests

Toolbox

Reported bugs

3 issues
  • App crashes on launch
  • Barometer not working
  • Inconsistent digital/analog readings in decibel meter

Requested features

4 requests
  • Thermometer feature
  • Improved decibel meter
  • Better visualization for teslameter
  • Ability to use metronome with screen off

Smart Metal Detector & EMF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Toolbox

One-time1
  • PRO Upgrade$2.99
4 purchases

Smart Metal Detector & EMF

Subscriptions2
  • 1 week subscription3 Days trial$4.997 Days
  • Weekly Access3 Days trial$8.997 Days
One-time2
  • Advertising free version$0.99
  • Forever one-time payment$34.99

Questions

Is Toolbox free?
Toolbox is free to download, with in-app purchases available.
Is Smart Metal Detector & EMF free?
Smart Metal Detector & EMF is free to download, with in-app purchases available.
Which has better reviews, Toolbox or Smart Metal Detector & EMF?
Toolbox is rated higher. Toolbox averages 4.5 out of 5 from 14K ratings, while Smart Metal Detector & EMF averages 4.4 from 270 ratings.
Do Toolbox or Smart Metal Detector & EMF have ads?
Both Toolbox and Smart Metal Detector & EMF show ads.
Which is updated more often, Toolbox or Smart Metal Detector & EMF?
Toolbox ships an update every 2 weeks, and Smart Metal Detector & EMF every 6 weeks. Most recently, Toolbox was updated on November 2, 2026 and Smart Metal Detector & EMF on October 29, 2026.

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