Comparison

PowerMeter vs eSign Assistant+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PowerMeter

Features
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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).

About

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.

Highlights
  • 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)
Features
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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

PowerMeter3 screens
eSign Assistant+4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 8 level
PowerMeter versus eSign Assistant+: the parameters behind the verdict, then further details
ParameterPowerMetereSign Assistant+
PriceFreeFree
Rating5.0 (1 ratings) — better
Number of ratings1 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better16.0
Further details — not scored
Size1 MB234 MB
Age rating4+4+
DeveloperChicony power Technology Co.,Ltd.Tpv Display Technology (China) Limited

In-app purchases

None

PowerMeter

No in-app purchases

None

eSign Assistant+

No in-app purchases

Questions

Is PowerMeter free?
PowerMeter is free to download, with no in-app purchases.
Is eSign Assistant+ free?
eSign Assistant+ is free to download, with no in-app purchases.
Do PowerMeter or eSign Assistant+ have ads?
Neither PowerMeter nor eSign Assistant+ shows ads.
Which is updated more often, PowerMeter or eSign Assistant+?
PowerMeter ships an update every 2 months, and eSign Assistant+ every 3 months. Most recently, PowerMeter was updated on September 13, 2026 and eSign Assistant+ on September 9, 2026.

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