PowerMeter vs eSign Assistant+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PowerMeter
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1. Basic function page (welcome page/connection matching/technical support) Welcome page: Once you enter the smart meter app page, you will automatically jump to the next page after the app is launched. Connection pairing: APP guide the user to open the search for the Bluetooth device, and the search results are displayed in a list. Technical support: Service users at any time, put customer service functions in the system interface to facilitate user assistance. 2. Communication parameter settings Different connection modes contain RS-485 or Ethernet can be set for different environments. Such as the baud rate, the same bit, the data bit, the stop bit, the IP address, the subnet mask, and the gateway address, Modbus TCP connection port, and other different parameters. 3. Phase line parameter setting Different parameter settings can be made for four wiring types such as 1P2W, 1P3W, 3P3W, and 3P4W. Each setting item needs to be adjusted according to the physical wiring system and C.T. serial connection mode, and should be paid attention to the correctness of the serial connection mode of each interface. 4. C.T. parameter setting The APP provide 333mV and 5A equalizer parameter settings and users can confirm whether the current matches the set value. 5. Other functions If necessary, users can also reset the hardware directly (all parameters are restored to factory settings).
eSign Assistant+
This app helps manage and project content onto ePaper electronic ink screen digital signage. It offers template editing, device and member management, and quick projection features for various meeting and display needs.
- Template management with editing and previews
- Bluetooth device management with status
- Member list import and management
- Group management for templates, devices, and members
- One-click image projection
- Multilingual support (Chinese, English)
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The ePaper Assistant+ App is specifically designed as a mobile image projection tool for TPV Group's ePaper electronic ink screen digital signage products. With a fresh UI/UX design, it boasts rich functionality and intuitive operation. 【Features】: 1. Template Management: Easily access built-in default templates for instant use, with seamless editing and real-time previews for tailored templates that meet diverse meeting needs. 2. Device Management: Swiftly add nearby devices via Bluetooth, with clear device status displays. 3. Member Management: Input individual member lists or swiftly import Excel data for efficient management. 4. Group Management: Group templates, devices, and members to streamline management for various industries or meeting setups, keeping everything under control. 5. Quick Projection: Effortlessly project images with one-click convenience, whether on a single device or multiple devices in a group, and utilize the auto-seating function for rapid deployment of conference nameplates. 6. Multilingual Support: Available in Simplified Chinese, Traditional Chinese, and English. Now supporting: 5.79" single-sided 3-color digital signage, 5.79" single-sided 4-color digital signage, 7.3" double-sided 4-color/6-color digital signage, 7.3" single-sided 4-color/6-color digital signage, 7.3" single-sided 6-color digital photoframe, 13.3" single-sided 6-color digital signage. with more devices in the pipeline. Download and enjoy!
Screenshots
Verdict
The clearest difference is iOS requirement: PowerMeter at 13.0 against eSign Assistant+'s 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PowerMeter ships an update every 2 months, eSign Assistant+ every 3 months. The most recent releases landed on September 13, 2026 and September 9, 2026 respectively.
| Parameter | PowerMeter | eSign Assistant+ |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 234 MB |
| Age rating | 4+ | 4+ |
| Developer | Chicony power Technology Co.,Ltd. | Tpv Display Technology (China) Limited |
In-app purchases
PowerMeter
No in-app purchases
eSign Assistant+
No in-app purchases









