Parti

Parti is a science & education application developed by Carsten Scholtes, packaged as a single Android APK of version 1.0 weighing in at 7.01 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

1. Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
2. File size is a light 7.01 MB, so it installs quickly even on modest connections.
3. This build is signed by "Carsten Scholtes" — always verify the developer name matches what's listed on the app's official store page before installing an update.
4. After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
5. We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

Parts are usually specified in the form of fractions as divident / divisor.
With different parts using different divisors it is difficult to compare the sizes of the parts.
The main gist of Parti is to determine the least common multiple (lcm) of all different divisors.
(The different parts can be expressed using the lcm as common divisor making the parts easily comparable.)

Divisors are represented and processed as BigInts in order to provide exact results.
(BigInts are designed to store whole values of arbitrary size, as long as enough memory is available.)

General Usage:

• 
  After entering a divisor in the central editor widget
  it can be added / removed with the button to the right of the input field.
  The list of divisors in the bottom section is changed accordingly.
  Also, lcm and gcd in the top section are updated to reflect the new list of divisors.
  


• 
  Tapping a value in the list puts the value into the editing widget.
  Dragging a list value to the left removes it from the list and puts it into the editor widget.
  Dragging a list value to the right removes it without changing the editor widget.
  


• 
  In the top bar, a button for clearing the whole list is available.
  There are also buttons for undoing and redoing any changes of the current session.
  


• 
  The value of the gcd can be changed deliberately
  with any change modifying the list of divisors accordingly:
  Tapping the value of the gcd opens a requester to replace the gcd with an arbitrary whole number.
  There is a button to set it to 1 (or to the value it had before it was set to 1).
  Further buttons increase or decrease the gcd by 1.
  

Is Parti free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Parti require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Parti safe to install?
We link to the exact APK published by Carsten Scholtes. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Parti?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

1. Tap the Download APK button above and save the file to your device.
2. Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
3. Open the downloaded io.gitlab.carsten_scholtes.parti.apk file from your Downloads folder.
4. Tap Install and wait for Android to finish.
5. Open «Parti» by Carsten Scholtes and grant only the permissions it actually needs.
6. Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.