V-SPER2.1.0
Publisher Description
Tools for building 3D objects (molecules) for better understand the VSEPR theory
Build and observe to come true with figures of repulsion, geometry, angles.
V-SPER, free application, is a support for the teaching of the VSPER theory (Valence Shell Electron Pair Repulsion). This theory makes it possible to predict the geometry of molecules from the sole electrostatic repulsion of valence electron pairs.
It is based on the Lewis model of distribution of the valence electrons of the atoms concerned. The latter is a prerequisite to take full advantage of V-SPER. The molecule is denoted AXnEm. The atoms (or portions of molecules) linked to the central atom A are denoted X (n: number of X, whether they are linked by single or multiple bonds).
The non-bonding electron pairs belonging to the central atom A and not being involved in bonds are denoted E (m: number of E). V-SPER allows to build simple and 3D objects (molecules) and to display the repulsion figure in blue (FigREP), the molecular geometry in yellow (Geom) as well as the angles.
Some angles are just modeled and do not always correspond to experimentally measured angles, such as the relative lengths of single or multiple bonds
About V-SPER
The company that develops V-SPER is Joazco. The latest version released by its developer is 2.1.0.
To install V-SPER on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-08-04 and was downloaded 57 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the V-SPER as malware as malware if the download link to com.joazco.vsper is broken.
How to install V-SPER on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the V-SPER is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by V-SPER will be shown. Click on Accept to continue the process.
- V-SPER will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 2.1.0
posted on 2026-08-04
Updated to the latest Android version with various improvements and bug fixes.
version 2.0.0
posted on 2025-11-02
V-SEPR – A tool that allows you to model the geometry of molecules based on VSEPR theory (3D), now with the added ability to build Lewis structures directly within the application (2D) — a new feature. Build and observe to become familiar with Lewis structures, repulsion shapes, molecular geometry, and bond angles. You can now navigate between 3D and 2D representations.
We look forward to your feedback!
version 1.6.0
posted on 2025-07-08
App update to meet Android 15 requirements.
version 1.5.1
posted on 2024-10-30
- Added haptic feedback on button click
- Fixed multiple bugs
version 1.5.0
posted on 2024-09-20
Update to the latest version of the Android SDK
version 1.4.0
posted on 2024-04-09
Version 1.4.0:
Update of the application to match the latest version of iOS.
We would like to remind you that some angles are simply modeled and do not always correspond to experimentally measured angles, as well as the relative lengths of single or multiple bonds.
This update fixes several bugs, including the issue of the status bar hiding the top of the application.
We thank you for your constructive feedback.
version 1.3.0
posted on 2023-08-20
Updated to Android SDK version 32.
