BatteryPlus vs USB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BatteryPlus
Monitor and manage your smartphone's charging process remotely. This utility app helps you keep track of your device's power status even when you're not home. It supports multiple languages for a wider user base.
- Remote charging monitoring
- Charging process control
- Multi-language support
- Smart phone integration
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This APP is aimed at monitoring and controlling your charging process with your smart phone when you're away from home. The APP supports multiple languages.
USB
This tool connects to U.S. Boiler modulating condensing boilers via a Bluetooth adapter for commissioning, diagnostics, and service. It offers wizards for startup and troubleshooting, data logging, and remote support capabilities through a web portal.
- Bluetooth connectivity to boilers
- Commissioning, diagnostic, and service functions
- Startup, troubleshoot, and service wizards
- Cloud data logging and reporting
- Remote support via web portal
- Boiler firmware and parameter updates
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USB-Connect is a commissioning, diagnostic and service tool consisting of a Bluetooth Adaptor and mobile device app. The app communicates with any U.S. Boiler modulating condensing boiler. USB-Connect is a local service tool with web portal data collection and live streaming to enable remote support. Compatible Boilers include Alpine, Alta, AltaC, Aspen, AspenC, K2WT, K2WTC, K2FT and XC Modulating Condensing Boilers. USB-Connect Features: • Bluetooth Adaptor connects boiler to USB-Connect App. • English and Spanish Language. • Start-up, Troubleshoot and Service Wizards. • Data logs, site photos, service & status reports sent to cloud. • Alta Boiler Control firmware and default parameter updates.
Screenshots
Verdict
The clearest difference is review sentiment: USB at 75% against BatteryPlus's 11%. USB also leads on rating (4.2 vs 2.3) and update cadence (monthly vs every 4 months). On price, ads, in-app purchases and monetization model 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.
USB holds the better App Store score, 4.2 against 2.3. That said, the two scores are not equally well evidenced: USB has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 11% of BatteryPlus's written reviews are positive against 75% of USB's.
BatteryPlus ships an update every 4 months, USB monthly. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.
| Parameter | BatteryPlus | USB |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (3 ratings) | 4.2 (16 ratings) — better |
| Positive reviews | 11.1% of reviews | 75.0% of reviews — better |
| Number of ratings | 3 | 16 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | NINGBO CARSTEL MANUFACTURING CO.,LTD | U.S. Boiler Company, LLC. |
Customer experience
BatteryPlus
USB
In-app purchases
BatteryPlus
No in-app purchases
USB
No in-app purchases
