Hello. I'm android boy, the chief developer of Smart Tools co,.
Smart Ruler Pro is the 1st set of Smart Tools suite. It is a collection of the 6 tools (ruler, 3 protractors, surface level, thread pitch guage).
※ Introduction video
Ⅰ. Ruler : for length, by touch
single touch
multi-touch, horizontal x vertical ON
Ⅱ. Touch Protractor : for angle, by touch
single touch, multi-touch
Ⅲ. Plumb Protractor : for slope, by plumb
- zero calibration : click the icon to set to zero.
- locking plumb : touch anywhere on the screen. Red "Holding..." text will blink.
Ⅳ. Camera Protractor : for tilt, by camera
- B/W : change the line and text color
Ⅴ. Surface level : for horizon, by balls
Ⅵ. Thread pitch : metric, US, NPT, BSPT, Screws
※Menu & Setttings
- Scale option for maps and drawings. input [Scale] at the settings.
※ Orientation sensor ??
Most protractor and level apps are using only an acceleration sensor. But this way has restrictions. When the slop is bigger than 60 degrees, the measurement can be inaccurate.
This app provides the best solution. Orientation sensor!! It calculates tilt using both magnetic sensor and acceleration sensor. The result becomes more reliable. I recommend that you turn on this option. But some custom ROM and non-magnetic devices cannot activate orientation sensor. Please check your specifications.
※Measure longer object than your screen (ruler)
※Caliper mode (thread)
touch the screen with 2 fingers
※FAQ
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 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.
※What's new
- v2.6.0 : Sound effect, new icon
- v2.6 : Material design
- v2.5 : ActionBar
- v2.3 : Thread pitch gauge
- v2.1 : Multi-touch
- v2.0 : Smart Ruler Pro released (Oct. 2010) https://play.google.com/store/apps/details?id=kr.aboy.ruler
If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.
After releasing [Smart Ruler] for length measurement, I had to develop an app for angle measurement. This app has 3 protrator modes below (touch, plumb, camera).
※ Introduction video
Ⅰ. Touch mode
Ⅱ. Plumb mode
Ⅲ. Camera mode
※ How to lock the plumb?
In plumb and camera mode, touch anywhere on the screen. The red "Holding..." text will blink.
※ Menu & Settings
※ Orientation sensor ??
Most protractor apps are using only an acceleration sensor. But this way has restriction. When the slop is bigger than 60 degrees, the result can be inaccurate.
I tried to find a good solution with an orientation sensor!! It calculates tilt using both magnetic sensor and acceleration sensor. The result becomes more reliable. I recommend that you turn on the option [Orientation sensor] if possible.
Several custom ROM and devices without a compass sensor cannot activate orientation sensor. Please check the specifications and turn off this option.
※ Pro version additional features:
1) 6 tools (ruler, level, thread) are integrated
2) More Tilt units
3) More languages supported
4) No ads
Smart Ruler Pro included a thread gauge for screws, nuts and bolts. Several users required an individual app, so that I released this app for the experts who had a paper to measure thread pitch.
※ Introduction video
※ Screenshots
※ Multi-touch
Touch your screen with 2 fingers. You can choose background color at the settings.
※ Menu & Settings
※ Calibration
- This app includes a database of 2000+ major android devices. If yours is a brand-new or unique device, please calibrate for yourself. Measure your ACTUAL screen width and input the number at calibrate menu. See the screenshot below.
※ FAQ
Q. I need other thread tables.
A. I'm not a hardware expert, so that I need standard papers. Please contact me. androidboy1@gmail.com
※ Pro version additional features:
1) 6 tools (ruler, protractor3, level) are integrated
2) Screen lock/unlock
3) More languages supported
4) No ads
※What's new
- v1.4 : Android OS 10 support
- v1.3.3 : New icon
- v1.3.2 : Galaxy S7 support, sound effect on/off
- v1.3.1 : Material design
- v1.3 : Screw sizes
- v1.2 : Action bar
- v1.0 : Thread Pitch released (June, 2011) https://play.google.com/store/apps/details?id=kr.sira.thread
If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.
Smart Ruler is the first app that I developed. It is in the 1st set of Smart Tools suite. When I tried to develop a distance-app, I saw a similar iPhone app. At the time, there was no such app in Google Play, so that I had developed it for 2 days. I have updated it for 5 years. :-)
※ How to use??
1) Put an object on the screen of your device.
2) Adjust its left edge to the left of the screen.
3) Touch the screen, and adjust its right edge with a red line. That's it.
※ Introduction video
※ Screenshots 1) single-touch
2) multi-touch
You can choose text and background color at the settings.
※ Menu & Settings
※ Calibration
- This app includes a database of 2000+ major android devices. If yours is a brand-new or unique device, please calibrate this app on it. Measure your ACTUAL screen width and input the number at calibrate menu. See the screenshot below.
※ FAQ
Q. The screen width is not correct.
A. Click the calibrate icon on the appbar. Please let me know your actual width. I'll register it to the next update. androidboy1@gmail.com
Q. I cannot touch my screen.
A. A wet finger or a conductive material may frustrate your touch.
※ Pro version additional features:
1) 6 tools (protractor3, level, thread) are integrated
2) Horizontal x Vertical
3) Architectural and Engineering Scales
4) More languages supported
5) No ads
※What's new
- v1.5.0 : More models are calibrated
- v1.5 : Material design
- v1.4 : ActionBar added
- v1.3 : App2SD
- v1.2 : Tablet PCs support
- v1.0 : Smart Ruler released (June, 2010) https://play.google.com/store/apps/details?id=kr.sira.ruler
If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.
Smart Compass Pro is the 3rd set of Smart Tools suite. It includes 3 tools (Compass, GPS, Metal Detector) and has 4 major features below.
1) Although you turn your device into portrait or landscape, the heading is fixed.
2) Camera view is used for reality.
3) Metal Detector is included to verify the embedded sensors.
4) GPS is supported.
※ Introduction video
Ⅰ. Compass
1) Standard (default) : camera on/off
2) Telescope : camera zoom
3) Night : dim backlight, red text
4) Digital : without center wheel
5) Google Maps
6) Google Maps (satellite)
- Lensatic compass (pitch, roll)
- Azimuth types : Degree, Mil, Quadrants and Back Azimuth
- You can turn on/off camera view
※ Background image
- [Background image] option can show recent 50 thumb nails from your gallery.
- When the picture that you want to select does not appear, rename its name as "compass.png" or "compass.jpg". Then it will appear at the beginning.
※ If the compass is not accurate ...
- The compass accuracy depends on the performance of your sensors exactly. If the direction is wrong, it means that one of your sensors is poor. Don't blame compass apps.
- Confirm that the magnetic field is normal. It is about 49μT in nature. If it is out of bounds, initialize the sensor. Point your phone up towards the sky and move it in a figure 8 pattern.
- Since 2014, Samsung view covers with a magnet or a leather cases with a magnetic snap used to cause unwanted results.
- I had a Galaxy Ace phone that was 4 years old. It was very very inaccurate. To my surprise, it worked perfectly after replacing the battery with new one.
※ Acceleration sensor turn On/Off
- This compass requires many sensors (acceleration sensors, magnetic sensor, orientation sensor) to improve direction features. When this becomes inaccurate, it means that one of your sensors is poor.
※ Find your best calibration
- This compass has several options. If one of your sensors are unstable, some azimuth will be incorrect. I wish that you find your best mode through experience.
1) Acceleration : On / Off
2) Screen : Portrait / Landscape
3) How to hold : Portrait / Landscape / Flat on a desk.
※ For example, Moto's best mode is [Acceleration Off, Portrait, Flat].
※ Sharing function
- Before taking a screenshot : the share icon can send only your location via email.
- After taking a screenshot : you can share both the screenshot and location via SNS.
Ⅱ. GPS
GPS can support 5 main features
1) True north
2) Various Coordinate types
3) Qibla finder, Car locator
4) GPS Speedometer
5) Share you location
※ True north vs. Magnetic north
- When you turn on [True North] option, the app will calculate true north with your GPS location.
- When GPS is available, the app will show "True north : xx˚ ". xx means "magnetic declination". Positive means that magnetic field is rotated east that much from true north.
- If true north does not appear, please activate GPS hardware.
- To confirm your magnetic declination, visit this website. File:World Magnetic Declination 2010.pdf
※ Qibla finder / Car locator
- If you are a Muslim, you can use this feature as a Qibla (Mecca) finder.
- Otherwise, you can use it as a car-locator.
- When you park your car in a parking lot, open [input location] menu and click [Here] button so as to save current location. You can use this feature as various destination finders. (home, office, ...)
- The grey icon shows the list of inputted locations.
※ Network GPS ??
- When your device cannot receive your location from GPS satellites in the sky, this compass can get your location from your telecom carrier. It is called as [Network GPS].
- Network GPS is the auxiliary GPS via Wi-Fi, IP-address and 3G/4G. It cannot get the altitude and error tolerance will occur within 150m - 2.5km.
- I have a plan to improve GPS feature with Google Play Location service.
Ⅲ. Metal Detector
This app measures magnetic field values using the embedded magnetic sensor. The magnetic field level (EMF) in nature is about 49μT(micro tesla) or 490mG (milligauss); 1μT = 10mG. If there is any metal in the area, the strength of the magnetic field should increase. Among other uses, it can help you find electrical wires in the wall and a spade under the ground.
Usage is simple: Just open this app, and move it around; The magnetic field values will constantly fluctuate. That's it!
The accuracy depends entirely on the performance of your magnetic sensor. Note that the magnetic sensor is affected by electronic equipment (TVs, PCs, etc.) due to electromagnetic waves.
※ Color grades of chart
① Green : Magnetic field level in nature within tolerance.
② Blue : Too low. The sensor might be weakened because of phone heating and age. You should cool down your phone. Otherwise, replace the battery with new one.
③ Red : Too high. There is a metal object nearby. If the value is very high (+170μT), a vibration occurs. To stop it, click the stop icon. You can turn on/off alarm sound at the settings.
※ Settings
- Alarm level : Select the threshold value of alert.
- Beep sound : choose from 4 different sound types.
※FAQ
Q. The compass does not work or says "MAGNETIC Sensor Error".
A. Some devices (like Galaxy J, Moto 4G) have NO magnetic sensor. Please check your specifications carefully. Otherwise, your embedded sensor was out of order.
Q. The compass shows the wrong direction.
A. The reason is that your embedded sensors are unstable and weakened by time. In order to initialize them, point your device up towards the sky and move it in a figure 8 motion.
Q. What is the orange triangle on the wheel?
A. It denotes the topside of your device.
Q. Can the metal detector find a hidden camera and ghost?
A. If they generate magnetic (electric) field, it is possible to search them. Many users used this app to find electrical wires in the wall.
Q. Where is the screenshot stored?
A. /storage/emulated/0/smart-tools/ or /storage/sdcard0/smart-tools/ or /mnt/sdcard/smart-tools/. Surely you can find your screenshots in your Gallery.
※What's new
- v2.7 : Sensor stabilization with filter enhancements
- v2.6.6 : Night mode (red, green)
- v2.6.3 : Metal option changed, Google Maps update
- v2.6.1 : Material design
- v2.5.1 : Screen capture, Share with
- v2.5 : ActionBar, Portrait mode
- v2.4 : Qibla finder
- v2.3.3 : True North, UTM coordinate
- v2.3 : Accellation Sensor on/off
- v2.2 : Tablet PCs support
- v2.0 : Smart Compass Pro released (Oct, 2010) https://play.google.com/store/apps/details?id=kr.aboy.compass
If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.
Smart Compass is a tool to search bearings (direction, azimuth) using a magnetic sensor in your device. You can select either magnetic north or true north.
It has 4 major features.
1) Although you turn your device into portrait or landscape mode, the heading is fixed.
2) Camera view for reality.
3) It shows magnetic field level to verify embedded sensors.
4) GPS and Google Maps are supported.
※ Introduction video
※ Compass modes
1) Standard (default) : camera on/off
2) Telescope : binoculars, camera zoom
3) Night : make screen dim, red <-> green toggle
4) Digital : no center wheel
5) Google Maps
6) Google Maps (satellite)
※ Wrong direction ???
- The compass accuracy depends on the performance of your sensors. If the direction is incorrect, it means that one of your sensors is poor or out of order. Don't blame compass apps.
- Confirm that magnetic field is normal (about 49μT in nature). If it is out of bounds, initialize your sensor. Point your device up towards the sky and move it in a figure 8 pattern. Please watch the YouTube video below.
- Since 2014, Samsung view covers with a magnet or a leather cases with a magnetic snap used to cause unwanted results.
- The direction may be wrong when the battery level is low. Please charge the battery fully. I had a Galaxy Ace phone that I used for 5 years. It was very inaccurate. To my surprise, it worked perfectly after replacing the battery.
※ Menu & Settings
※ Background image
- [Background image] option can show recent 50 thumb nails from your gallery.
- When the picture that you want to select does not appear, rename its name as "compass.png" or "compass.jpg". Then it will appear at the beginning.
※ Acceleration sensor turn on/off
- My compass requires 2-3 sensors (acceleration sensor, magnetic sensor, orientation sensor) to improve the performance.
- If your device had unstable sensors, the direction could be inaccurate. I had heard that several Motorola devices (Droid X, RAZR, BIONIC...) had this issue.
- In this case, turn off [Acceleration sensor] option. This app will use an orientation sensor only.
※ True north vs. Magnetic north
- When you turn on [True North] at the settings, this app will calculate true north with your GPS location.
- When GPS is available, the app will show "True north : xx˚ ". xx means "magnetic declination". Positive means that magnetic field is rotated east that much from true north.
- If true north does not appear, please activate GPS hardware.
- To confirm your magnetic declination, visit this website. File:World Magnetic Declination 2010.pdf
※ How to save battery
- Turn off [Camera] and [GPS] at the settings.
- Select [Slow] in sensor response option
- Never use the Home button to exit the app. To close the app completely, use More menu > Exit
※ FAQ
Q. The compass does not work or says "Magnetic Sensor Error!!".
A. Some new devices (Galaxy J, Moto G4, Micromax ...) have no magnetic sensor. Please check your specs.
Q. The compass works, but it shows wrong direction.
A. I guess that your embedded sensors are unstable and weakened by time. Reboot your device and initialized your sensor, go menu -> calibration menu.
Q. GPS information does not appear.
A. Some firmware has GPS hardware trouble. First, restart your device and check location settings.
Q. True north does not appear.
A. The app can calculate true north after GPS is activated.
Q. How to run auto-focusing and camera zoom?
A. Press volume buttons on the side of your device.
Q. Why does this app require internet connection?
A. The connection is required for Google Maps and ads.
Q. What is the orange triangle?
A. It denotes the topside of your device. No matter how you hold the compass in portrait or landscape or even cross but it should be in vertical condition.
Q. How to mute video ads?
A. Turn off [Sound effect] at the settings.
※ Pro version additional features:
1) No ads
2) Direction (Qibla finder, car locator) features
3) Sharing your location and screenshots via SNS and email
※What's new
- v1.8 : Sensor stabilization with filter enhancements
- v1.7.7 : Night mode update (red-green toggle)
- v1.7.4 : New icon
- v1.7.3 : Google Maps update
- v1.7.0 : Jpeg with GPS tag
- v1.7 : Material design
- v1.6 : GPS, True north, Google Maps
- v1.5 : Action Bar
- v1.4 : Acceleration sensor on/off
- v1.3 : Tablet PC support.
- v1.0 : Smart Compass released (Aug. 2010) https://play.google.com/store/apps/details?id=kr.sira.compass
If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.
Hello, I'm androidboy.
For 4 months, I have added Material Design on Smart Tools package app.
It took too much time because the app includes 15+ tools. I had developed new functions, posted all blog articles, took youtube videos and re-drawn images. I'm going to release this version on Feb, 2016.
Set 1: Length, Angle, Slope, Level, Thread - Smart Ruler Pro
Set 2: Distance, Height, Width, Area - Smart Measure Pro
Set 3: Compass, Metal detector, GPS - Smart Compass Pro
Set 4: Sound meter, Vibrometer - Sound Meter Pro
Set 5: Flashlight, Magnifier, Mirror - Smart Light Pro
Set 6: Unit - Unit Converter Pro
※FAQ
Q. Downloading error occurs.
A. Open phone Settings > Apps > Google Play Store and clicked on 'Clear data/cache' .
Q. I changed my phone. Google Play app shows "The app is not compatible.".
A. This package app requires a magnetic sensor. Several brand-new devices (Moto G4, Galaxy J...) had no magnetic sensor. Please check your device's specs.
Q. How to create a shortcut?
A. The app has the shortcuts of 6 tools(compass, sound, unit, flashlight, magnifier and mirror). Like widgets, you can create a shortcut in home screen.
※What's new
- v2.0.4 : New icons, unit converter update (dark style).
- v2.0.3 : Compass update (UTM, MGRS input)
- v2.0.2a : Bug fix on flashlight widget of OS 2.3
- v2.0.2 : Vibrometer and level update.
- v2.0.1 : Unit converter update.
- v2.0 : Material design
If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.
- Scale option for maps and drawings. input [Scale] at the settings.
