# E-App — Gema Electrostatic App

> Real-time control and monitoring for Gema OptiStar 4.0 electrostatic coating equipment. (iPhone/iPad app by Gema Switzerland GmbH.)

- Source: https://appshunter.io/ios/app/e-app/id1333995001 (this page in markdown: same URL + `.md`)
- Developer: [Gema Switzerland GmbH](https://appshunter.io/developer/1333995000)
- Category: Productivity
- Price: Free
- Rating: 2.70/5 from 7 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.3 · 108 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Chinese (Simplified, China), European Spanish
- Released: 2018-02-08
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/e-app/id1333995001/reviews.md

## What is E?

With the useful functions of Gema‘s Electrostatic App you control and monitor your Gema OptiStar 4.0 equipment in real time:



Application: All essential OptiStar 4.0 coating parameters are clearly visible on a Smart Device and can be directly adjusted and controlled. Designed for use with manual or automated Gema equipment.


Line Management: View coating process productivity data on the device, and export the data in a PDF file. Important statistics and cost calculations from production are automatically generated. Maintenance countdown timers can easily be viewed at the touch of a button. 



Setup: With this function the configuration of the OptiStar 4.0 is defined.  For automated equipment use, OptiStar 4.0 can be controlled as single device or in a group of control units. System information and diagnostic data are easily retrievable and can be sent via e-mail. The automated firmware update keeps your OptiStar 4.0 up to date.

## Key features

- Real-time equipment control
- Coating parameter adjustment
- Productivity data monitoring
- Data export to PDF
- Maintenance countdown timers
- Automated firmware updates
- Diagnostic data retrieval

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/e-app/id1333995001/reviews.md

### 1/5 — Trash

*2026-03-05*

Complete garbage. When I Bluetooth to my gun the gun doesn’t work correctly.

### 1/5 — Horrible App

*2020-05-29*

This thing is far from perfect, you would be better off weighing your own powder and timing your jobs. So many glitches

## Frequently asked questions about E

### What Gema equipment is compatible with E-App?

E-App is designed to control and monitor Gema OptiStar 4.0 electrostatic coating equipment. It supports both manual and automated configurations of this specific model.

### Can I export production data from E-App?

Yes, E-App allows you to view coating process productivity data directly on your device. You can then export this data in a PDF file for further analysis and reporting.

### How does E-App handle equipment updates?

E-App features an automated firmware update function. This ensures your Gema OptiStar 4.0 equipment stays up-to-date with the latest software automatically.

### What kind of diagnostic information does E-App provide?

E-App provides easy access to system information and diagnostic data for your OptiStar 4.0 equipment. This data can be conveniently sent via email for troubleshooting or support.

### Does E-App offer any cost calculation features?

Yes, E-App automatically generates important statistics and cost calculations from your production data. This helps in understanding the financial aspects of your coating processes.

### What is the update frequency for E-App?

The latest version of E-App is 2.3.4, last updated on July 29, 2025. While specific update frequency isn't detailed, this indicates ongoing development and support.

### What is the user sentiment for E-App?

Based on available data, E-App has a rating of 2.7 stars from 7 ratings. This suggests that user satisfaction may be mixed, with potential areas for improvement.

### Is E-App available on multiple platforms?

E-App is currently supported on iPhone and iPod devices. Compatibility with other platforms like Android is not specified in the provided data.

## Version history (last 5 releases)

### 2.3.4 — 2025-07-29

Updated target SDK

### 2.3.2 — 2024-10-22

Update to latest tech stack

### 2.3.1 — 2024-10-22

Update to latest tech stack

### 2.0.1 — 2023-08-28

-	Language packages (de, en, es, fr, it, ja, zh)
-	Line management: improvements regarding statistic data and simple interpretation
-	Settings: firmware of the OptiStar automatically available in the App

### 2.0.0 — 2023-08-07

-	Language packages (de, en, es, fr, it, ja, zh)
-	Line management: improvements regarding statistic data and simple interpretation
-	Settings: firmware of the OptiStar automatically available in the App

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## Related topics

[eapp](https://appshunter.io/ios/topics/eapp)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*