Unified vs Central Gas Service
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Unified
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This app allows hosting different HMIs to monitor and control a plant or machine. You can create the HMIs with the Unified-E App Designer and publish them on the Unified-E App Manager. Unified-E is a software product which is used to operate machines or plants with a smartphone. App development time is drastically reduced by using the "Unified-E App Designer" software, where you can define both the HMI views and push notifications for your individual HMI app. No app programming knowledge is required. There is a Gateway PC required which connects smartphone with machine and ensures that communication is secured and only granted for authorized users. The "Pro" license also allows operating a machine via the Internet without performing any configuration on the firewall or router. By now there are already multiple Unified-E endpoint adapters, e. g. for the S7-, ControlLogix-, Modbus- or OPC UA interface. The software, user manuals, licenses and further information can be found on the website ww.unified-e.com. For developers and integrators all licenses are for free.
Central Gas Service
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Information at your fingertips! This app gives you direct access to your account balance, location and contract information. It also gives you the ability to store and process payment and request service work and deliveries directly through the app.
Screenshots
Verdict
The clearest difference is update cadence: Unified at every 4 weeks against Central Gas Service's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Unified ships an update every 4 weeks, Central Gas Service every 4 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Unified | Central Gas Service |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 weeks โ better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.2 โ better |
| Further details โ not scored | ||
| Size | 189 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Unified-E AG | Rural Computer Consultants, Inc. |
In-app purchases
Unified
No in-app purchases
Central Gas Service
No in-app purchases









