April 24, 2017

I got a Samsung Galaxy S8

Hello. I'm Androidboy.

Today I got Galaxy S8, that had narrow display resolution. I'm going to do my best to calibrate my apps on it.

March 14, 2017

Smart Tools mini (v1.0)

Hello, I'm androidboy.

Since 2016, a lot of Android devices had no magnetic (compass) sensor. Moto G4, Galaxy J series, Galaxy TabA, HTC desire 600, Amazon Fire tablet....

They cannot install my package app due to the lack of magnetic (compass) sensor.
So I repacked  paid apps. "Smart Tools mini" is minor version for devices without magnetometer.

3 tools (Smart Measure, Smart Compass and Metal detector) are removed.
2 tools and 1 feature (Smart Distance, Speed gun and currency) are included.
Internet permission is required for exchange rates.

And the front page becomes simple.

Set 1: Length, Angle, Slope, Level, Thread - Smart Ruler Pro
Set 2: Sound meter, Vibrometer - Sound Meter Pro
Set 3: Flashlight, Magnifier, Mirror - Smart Light Pro
Set 4: Unit, Currency - Unit Converter Pro
Set 5: Distance, Speed - Smart Distance Pro

1. Smart Ruler Pro v2.6
    - ruler, 3 protractors, level, thread pitch

2. Sound Meter Pro v2.5
   - sound meter, vibration meter

3. Smart Light Pro v2.4
   - flashlight, magnifier, mirror

4. Unit Converter Pro v2.3
   - units, currency

5. Smart Distance Pro v2.3
   - distance, speed

 Instruction video

 What to do next 
 - Some languages are not translated fully.
 - Smart Distance and Speed gun are not good yet. I'm updating them day by day.

 What's new
 - v1.0 : Release (Apr 28, 2017)

If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.

FAQ of Smart Tools® apps

  Common Questions
Q. License problem. "not licensed..." or "cannot connect...".
A. See this page. http://goo.gl/i654E

Q. Downloading trouble. I got error code 907, 924...
A. Settings > Apps > Google Play Store and clicked on 'Clear data'.

Q. Is there a manual or usage ?
A. Each tools have their own app blog pages and demonstration videos. Open the app, go menu > Youtube / visit blog.

Q. I cannot find the package app in Google Play store.
A. It means that your device is incompatible. The package app requires a magnetic (compass) sensor. Please check your specifications.

Q. Camera view becomes black.
A. Other app occupied your camera. Please restart your device.

Q. After install, the icon does not disappear in my home screen.
A. It is a known bug of OS 4.1. Just restart your device.

Q. How could I open your paid apps without internet connection ?
A. Open my paid apps 2-3 times with WiFi or 3G/4G. The apps will not check license any more.

Q. Can I transfer the paid apps to new Google account?
A. Sorry, it is impossible to transfer the paid apps. You have to repurchase it.

Q. After OS upgrading, the flashlight widget does not work.
A. Remove and re-create the widget. Otherwise uninstall fully and re-install the app.

Q. Why does the free app require internet permission?
A. Just for ads.

Q. Why can I remove ads?
A. How about getting pro version?

  Payments Issues
Q. Why does the market charge extra 1$ and more? (Google Play store)
A. USD 1 is just for checking your credit card verification. Actually, it will not be charged.

Q. I had changed my phone. Should I repurchase the app?
A. No. If you set the same Google account on your new phone, you can re-install and update the paid app without more payment.

Q. How to cancel my order?
A. You can refund it within 24 hours of purchase. It is the Google's policy.

Q. Should I pay every month?
A. No. Just one-time payment (for $1.50/$2.99).

  Smart Tools package
Q. How can I change its unit?
A. At the front screen, go More(3 dots) > Unit (Meter->ft).

  Smart Ruler
Q. The screen width is not correct.
A. Click [Calibrate] icon on the app bar. You can input correct size (long-side, not diagonal) for yourself.

Q. The surface level does not work.
A. Some custom ROM (CyanogenMod) and OS have this problem. Release [Orientation sensor] option at the settings.

Q. I cannot calibrate the level with zero-calibration.
A. You have to reset all settings. Go menu > Settings > Reset settings.

  Smart Measure
Q. It would not work.
A. Does your device have a magnetic sensor (magnetometer) ?

Q. How to use?
A. To use this rangefinder tool accurately, you should understand its theory. Watch  Youtube video. https://www.youtube.com/watch?v=DQDB5YplDvY

Q. The distance is always "MAX".
A. Your phone is aiming above the horizon. Please see checklist diagram.

Q. The result is not correct.
A. Please calibrate your device carefully and input height (from ground to device).

Q. How to calibrate?
A. Select [manual calibration] on the app bar. If the measured distance is longer/shorter, reduce/add 5%. Try several times. You can find your best calibration.

  Smart Compass
Q. The compass does not work or says "MAGNETIC Sensor Error".
A. Some devices have no magnetic sensor. Please check your specifications carefully. Otherwise, or your built-in sensor was out of order.

Q. The compass shows wrong direction.
A. Your sensor is weakened. In order to initialize it (point your device up towards the sky and move it in a figure 8 motion). https://www.youtube.com/watch?v=M0tK0zWXUXU

Q. My phone has a view cover. Can it make a problem?
A. A view cover with a magnet (or a leather case with a magnetic snap) can cause unwanted results. Remove it.

Q. GPS information (altitude,coordinates) does not appear.
A. Your GPS is not activated. Restart your device and check GPS location settings on your device.

Q. What is the orange triangle?
A. It denotes the topside of your device.

Q. Where is the screenshot stored?
A. /storage/sdcard0/smart-tools/, /mnt/sdcard/smart-tools/, /storage/emulated/0/smart-tools/. Surely, you can find it in your Gallery.

  Metal detector
Q. How to use?
A. There is no special usage. https://www.youtube.com/watch?v=E5xuYOPJuAE

Q. Metal detector does not work.
A. Some devices have no magnetic sensor. Please check your specifications carefully.

Q. Can I find hidden cameras or ghosts with this app?
A. If they generate magnetic(electric) field, it is possible to search them. Many users are using this app to find electrical wires and studs in the wall or pipelines on the ground.

Q. Can it find gold or silver?
A. No, pure gold and silver are classified as Non-ferrous without magnetic field.

Q. It does not react to coins.
A. Most coins are made of zinc, copper and aluminum.

  Sound Meter
Q. It says "Unable to open microphone.".
A. Other app occupied your microphone. Just restart your device.

Q. Why does it stop at 82 dB? Is it a bug?
A. It is normal. The microphones were aligned to human voice (300-3400Hz, 40-60dB) by the phone-makers, and the values of sound pressure stop at 32767 .(32767=2^15-1). So the louder sound cannot be recognized.

Q. I hear nothing. But the app shows 30-40 dB.
A. A microphone cannot catch very low-frequency noise. 0 dB means the vacuum of space.

Q. How to calibrate?
A. In a very quiet room, the measured value should be 25-35dB. Go menu > calibrate.

Q. Is the result dBA weighted?
A. Yes, I calibrated the app with a actual SPL meter with dBA. But db(A) makes no sense because the result is not perfect.

Q. How to calibrate?
A. If there is unnecessary values measured by no movement, Go menu > Calibrate, click [Cut Baseline] button. And, adjust its sensitivity with [+]/[-] buttons so that the max value is about 10-11. Try it several times.

Q. What is the unit of vibration?
A. It has no unit, just the scale for reference.

  Smart Flashlight
Q. The widget disappeared.
A. You installed the app into SD card. Move it to your device.

Q. After OS upgrading, the flashlight widget would not work properly.
A. It is one of known bugs. Remove and recreate the widget.

Q. I cannot turn on LED.
A. Does your device have LED? Some Chinese devices cannot turn on LED.

Q. Why does this app require camera permission?
A. LED is related to "camera and media". All flashlight apps require camera permission.

Q. Does this flashlight send my personal information?
A. No. I'm a top developer of Google Play store.

  Smart Magnifier
Q. I cannot enlarge (zoom) camera view.
A. Some Chinese devices do not support camera zoom. Use digital zoom after freezing.

Q. I want to remove menu layout on the screenshot.
A. After freezing the screen, download it.

  Unit Converter
A. How can I convert from gram to litre?
Q. "gram" is weight unit, "litre" is volume unit. They cannot be converted.

A. Where is Torque section?
Q. Click the favorite icon (star) in Science category.

  Unit Converter [only for mini]
A. How to refresh the exchange rates?
Q. Click the refresh icon on the app bar.

A. I want more currencies.
Q. The app supports 110 currencies. Select region list on the app bar.

Latest Released March 15th, 2017

January 6, 2017

New icons for material design

At the end of 2016, I changed all my icons. They became simple and bright.

Happy new year !!

December 26, 2016

I bought a Moto G4.

Hello. I'm Androidboy.

This month I bought Moto G4 phone from Amazon, that is a cheap and popular device.

Hundreds of my users asked the reason why the device isn't compatible with my package app. It has no compass sensor. Therefore some of my apps (compass, metal detector, rangefinder) do not work on it. Google play is removing this device automatically from the available list.