Slide Rule

Masayuki Akamatsu Productivity iPhoneiPadiPod touch

Slide Rule is a paid Productivity app for iPhone and iPad by Masayuki Akamatsu. Rated 1.0/5 from 1 ratings. Requires iOS 17.0. Updated August 20, 2026.

Rating: 1.0; 1 ratings
Price: 0.99 USD; on the App Store
Size: 3 MB; Age 4+
Updated: Aug 20; 2026 · v2.5.2

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Screenshots

About Slide Rule

This app is a slide rule simulator. The slide rule (a.k.a. slipstick) is an mechanical analog computer which was formerly used for various scientific calculations, engineering design and surveying. It consists of three linear strips and a sliding cursor and is used for multiplication, division, square, cube, square root, cubic root, trigonometry, logarithm and so on. Please note that trigonometry and logarithm are not supported and the width of the scale is 1,000 pixels in this version.

What’s new

Version 2.5.2 · Updated August 20, 2026

Now takes advantage of ProMotion displays. Dragging the scales and cursor is rendered at up to 120fps for a smoother, more responsive feel.

App privacy

The developer, Masayuki Akamatsu, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

App details

Slide Rule is a paid Productivity app for iPhone, iPad and iPod touch, developed by Masayuki Akamatsu. It is rated 1.0 out of 5 from 1 ratings on the App Store, requires iOS 17.0 or later, is 3 MB to download and is available in 2 languages. It was first released on February 11, 2019 and last updated on August 20, 2026.

Category: Productivity
Rating: 1.0 / 5 (1 rating)
Price: 0.99 USD
Version: 2.5.2
Size: 3 MB
Requires: iOS 17.0 or later
Compatibility: iPhone, iPad, iPod touch
Languages: English, Japanese
Age rating: 4+
Released: February 11, 2019
Last updated: August 20, 2026
Developer: Masayuki Akamatsu

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