V-SPER
1.0
v2.0.0 by Joazco
About V-SPER
V-SPER (Package Name: com.joazco.vsper) is developed by Joazco and the latest version of V-SPER 2.0.0 was updated on November 5, 2025. V-SPER is in the category of Education. You can check all apps from the developer of V-SPER. Currently this app is for free. This app can be downloaded on Android 6.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.
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
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
V-SPER 2.0.0 Update
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!
Read More
V-SPER Features
Previous Versions
More
Requires Android: Android 6.0+
Screen DPI: 120-640dpi
SHA1: f7eb0024e765247ce8423f2a201ea8892b7cb295
Size: 16.97 MB
What's New:
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!
We look forward to your feedback!
Variant
Arch
Version
DPI
30
August 19, 2025
V-SPER
1.6.0
(30)
Requires Android: Android 6.0+
Screen DPI: 120-640dpi
SHA1: 362cb5ed77c3426e40e62bba20c97aa74f0cd1a8
Base APK: com.joazco.vsper.apk
Split APKs: config.en, config.mdpi, config.zh
Size: 16.2 MB
What's New:
App update to meet Android 15 requirements.
Android 6.0+
120-640dpi
30
September 8, 2025
V-SPER
1.6.0
(30)
Requires Android: Android 6.0+
Screen DPI: 120-640dpi
SHA1: 4c1b501e08af541840590fd4cf6ebd5067685b9b
Base APK: com.joazco.vsper.apk
Split APKs: config.en, config.fr, config.mdpi
Size: 16.19 MB
What's New:
App update to meet Android 15 requirements.
Android 6.0+
120-640dpi
30
September 14, 2025
V-SPER
1.6.0
(30)
Requires Android: Android 6.0+
Screen DPI: 120-640dpi
SHA1: c23372373b7e0802ead7635c0e8fa4e5c6dd632c
Base APK: com.joazco.vsper.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xhdpi, config.zh
Size: 11.99 MB
What's New:
App update to meet Android 15 requirements.
Android 6.0+
120-640dpi
30
October 4, 2025
V-SPER
1.6.0
(30)
Requires Android: Android 6.0+
Screen DPI: 120-640dpi
SHA1: 5284b800ed0c6c6c2c3d99e74bfede5c16913454
Base APK: com.joazco.vsper.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxxhdpi, config.zh
Size: 16.53 MB
What's New:
App update to meet Android 15 requirements.
Android 6.0+
120-640dpi
30
October 7, 2025
V-SPER
1.6.0
(30)
Requires Android: Android 6.0+
Screen DPI: 120-640dpi
SHA1: 7697739435b310558588b88920a85f1e635aec8a
Base APK: com.joazco.vsper.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxhdpi, config.zh
Size: 12.01 MB
What's New:
App update to meet Android 15 requirements.
Android 6.0+
120-640dpi
Variant
Arch
Version
DPI
29
November 6, 2024
V-SPER
1.5.1
(29)
Requires Android: Android 5.1+
Screen DPI: 120-640dpi
SHA1: 76798b1a0665e1b41f287dca8d0d4025cefacbb2
Base APK: com.joazco.vsper.apk
Split APKs: config.en, config.fr, config.mdpi
Size: 15.45 MB
What's New:
- Added haptic feedback on button click
- Fixed multiple bugs
- Fixed multiple bugs
Android 5.1+
120-640dpi
29
November 8, 2024
V-SPER
1.5.1
(29)
Requires Android: Android 5.1+
Screen DPI: 120-640dpi
SHA1: d6ab01503dbf3773413cc830a4d3f102ae7bfb73
Base APK: com.joazco.vsper.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxhdpi, config.zh
Size: 11.82 MB
What's New:
- Added haptic feedback on button click
- Fixed multiple bugs
- Fixed multiple bugs
Android 5.1+
120-640dpi
Variant
Arch
Version
DPI
27
October 9, 2024
V-SPER
1.5.0
(27)
Requires Android: Android 5.1+
Screen DPI: 120-640dpi
SHA1: d6e0ba44ff3dd74913a9901e22882cc6a3d1b660
Base APK: com.joazco.vsper.apk
Split APKs: config.en, config.mdpi, config.zh
Size: 15.45 MB
What's New:
Update to the latest version of the Android SDK
Android 5.1+
120-640dpi
27
October 10, 2024
V-SPER
1.5.0
(27)
Requires Android: Android 5.1+
Screen DPI: 120-640dpi
SHA1: 87997b26bd65afba9facc4bc06ec1a79654a3e79
Base APK: com.joazco.vsper.apk
Split APKs: config.ar, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxhdpi, config.zh
Size: 11.82 MB
What's New:
Update to the latest version of the Android SDK
Android 5.1+
120-640dpi
More Information
Package Name:
Update Date:
2025-11-05
Latest Version:
2.0.0
Need Update:
Available on:
Requirements:
Android 6.0+
Report:
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