Circular Slide Ruler app icon

Circular Slide Ruler

Align the inner and outer rules and find on the circle all the multiples.

Matteo Bertini · it.slug.circularsliderule

Not rated yet 5K+ downloads vv1.1.1 56.6 KB Android 2.1+ PEGI 3 · Everyone

Download APK 56.6 KB All versions
  • Signature matches the Google Play version Details

At a glance

Latest version
vv1.1.1 (7)
Updated
Jul 9, 2020 (6 years ago)
APK size
56.6 KB
Requires
Android 2.1+ (API 7)
CPU support
Any (no native code)
Category
Tools (app)
Website
slug.it/naufraghi
Developer contact
[email protected]

About this APK

Circular Slide Ruler is an app by Matteo Bertini in the Tools category. It has no native code, so it runs on any Android processor.

What's new in vv1.1.1

What's new: - Orientation is now fixed - Optional dark theme - Use better the screen space (slightly bigger radius) - 10 is painted in swapped colors for better identification Thanks you all for the suggestions!

Description

From the listing uploaded by “split-store”.

Once all the pilots had a rule of this kind on the clock, knowing how to do multiplication and division quickly could save your life. Today planes rely on very different technologies but the rule is still useful whenever you want to do operations without having to type. Just line up the two numbers to get quickly tabs on all their multiples. Very useful for travel, just set the exchange rate, for example, if 1 U.S. Dollar is worth 0.75 Euros, how many U.S. Dollars costs a 40 Euros backpack? Just look at the Ruler to see it costs about 53 U.S. Dollars, without doing math! Join the Google+ Community Android Development https://plus.google.com/communities/105153134372062985968 and opt-in https://play.google.com/apps/testing/it.slug.circularsliderule to test new betas!

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Aug 8, 2025.
  • Certificate issued to “slug.it” This is the certificate of the Google Play version.

Store checks and file details

  • Developer signature verified Aug 6, 2020
  • Validated against Google Play Aug 8, 2025
  • Antivirus scan passed Jan 8, 2021
  • Signed byCN=Matteo Bertini, O=slug.it, L=Firenze, ST=Italia, C=IT
  • Signing certificate (SHA-1)05:FB:DD:B9:1F:3E:02:A2:7E:04:14:8B:51:FC:0B:73:A0:90:AD:32
  • File MD528bbb1d42db5ba60d1ae14de6622c0dc
  • Uploaded by “split-store” Gold tier · 24,358 followers · uploading since 2019

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Required hardware & features

Circular Slide Ruler APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Circular Slide Ruler APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 28bbb1d42db5ba60d1ae14de6622c0dc.

Tags

slug circularsliderule tools circular slide rule

More Tools apps