Smart Ruler Pro

4.6
1.31K reviews
10K+
Downloads
Content rating
Everyone
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About this app

Smart Ruler Pro is the 1st set of Smart Tools collection.

It integrated 6 simple and useful tools into this app. Here is the list.

1. Ruler - length
2. ProtractorⅠ(Touch) - angle
3. ProtractorⅡ(Plumb) - slope
4. ProtractorⅢ(Camera) - goniometer, clinometer
5. Surface level - sprit level
6. Thread pitch - screw, bolt, nut

* Pro version added features:
- No ads
- Multi-Touch mode
- Caliper mode
- Ruler Extension
- Architectural and Engineering Scales
- Various Tilt units
- Screen capture

* Do you want more tools? Get [Smart Tools] package.

For more information, watch YouTube and visit the blog. Thank you.


* It is a one-time payment. The app price is charged only once.

** No internet support : You can open this app without any connection. After installation, open the app 1-2 times with your device connect to WI-FI or 3G/4G.
Updated on
Mar 3, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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4.6
1.31K reviews
Tony Luxton
November 13, 2020
Excellent app. Will go on the SD card. EDIT: Thanks for implementing the change I suggested. I can now change the text colour without the zero button being visible. It was too easy to press accidentally!
20 people found this review helpful
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A Google user
November 25, 2019
Checking 300 tools for correct angular placement, this paid app was the best way to verify using my camera. Downloaded free app then paid to support this developer & stop ads. Once bought app, it auto requested if I wanted to delete the free one, which I was glad so I didn't have to do this later. Strong suggestions: 1) Save or 🌟 icon to remember so I don't have to manually get the angles each time. 2) In white mode, make the selected angle white so I don't have to strain to read dark on light
25 people found this review helpful
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Andrew Bryan
July 14, 2021
This is really great. The one annoyance is I usually have my phone in dark mode, but I want to select a white background for this tool.. but selecting "white" when in dark mode seems to result in a grey background
10 people found this review helpful
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Smart Tools co.
November 11, 2021
Thanks for your comments. This issue has been fixed in the latest update. Select the white background one more time in settings.

What's new

- v2.7.5 : Support for Android 12
- v2.7.4 : More models are calibrated