eLockApp vs HeatNext BT
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
eLockApp
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With the GROTHE eLock app, GROTHE eLock locking cylinders can be opened securely and managed conveniently. Each user can be assigned access authorisations, which are encrypted and transmitted to the locking cylinder via Bluetooth when an opening attempt is made. There they are cross-checked and, if authorisation is granted, the cylinder knob is released for operation. The app is fully functional offline. - Opening the door via smartphone (time-limited and permanently open) - Easy to use app - Live battery display for all Locking cylinder within range Additional features for administrators: - Management of access authorisation of all users - Configuration of door parameters such as e.g. release times - Reading out the event memory of the locking cylinders - Determining the communication key for secure data transmission The APP: Open the door with the eLock app or transponder. Manage access authorisations with the eLock app: simply add or delete users. Manage multiple locking cylinders in one app. View the last 1000 events. Automatic locking of the door after an adjustable time The mechanics: Double knob cylinder with electronic authorisation on one side. Open and lock the door manually from the inside using the rotary knob. Quick to install - simply replace the existing locking cylinder. Increased security at the entrance as the cylinder requires no cabling, cloud or network.
HeatNext BT
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The HeatNext BT app provides an easy way to manage your heating or cooling systems with your HeatNext BLE capable devices. Whether you need to adjust temperature, set daily schedules, or troubleshoot issues, the app offers straightforward features to keep your home comfortable. Key Features: - Temperature Control: Set your preferred temperature with just a few taps, helping you maintain a comfortable environment. - Daily Scheduling: Configure and adjust daily schedules to automate temperature changes throughout the day, aligning with your daily routine. - Quick Adjustments: Use user functions to make quick changes to your systemβs operation, perfect for when you need to make quick or temporary changes. - On/Off Control: Easily turn your heating or cooling system on or off with a single tap. - Issue Detection: The app detects issues and provides clear troubleshooting information.
Screenshots
Verdict
The clearest difference is update cadence: HeatNext BT at every 6 weeks against eLockApp's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
eLockApp ships an update every 9 months, HeatNext BT every 6 weeks. The most recent releases landed on October 27, 2026 and October 18, 2026 respectively.
| Parameter | eLockApp | HeatNext BT |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 6 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 13.0 |
| Further details β not scored | ||
| Size | 12 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Grothe GmbH | Nomnio |
In-app purchases
eLockApp
No in-app purchases
HeatNext BT
No in-app purchases









