iS7 vs POWERBELY
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
iS7
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--- Industrial automation tool --- Read and write variables on Siemens S7 PLC (input, output, timer, counter, memory and data block) Manage a virtual push button for remote operations, with configurable I/O, for custom use. Check operative status of S7.300 and S7.400 PLC Link the new S7.1200 and S7.1500 series and, on the last release, also the little LOGO PLC. For all detailed informations please visit support website. http://www.trotti.eu/iS7/index.html
POWERBELY
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The POWERBELY intelligent battery management system can monitor the battery status through Bluetooth connection, collect, store and process the information during battery operation in real time, exchange information with external devices, solve the key problems of the safety, ease of use and service life of the lithium battery system, extend the service life of the battery, and enhance the stability of the battery after grouping. 1. Display real-time voltage, current, power and other parameter values in instrument panel and digital form; 2. Display the real-time voltage, alarm status and trigger alarm value or protection value of all single batteries; 3. Comparison of each data of the cells and voltage difference. The maximum voltage and minimum voltage of the series or parallel battery packs, the maximum voltage and minimum voltage of the battery cells during the monitoring of a single battery. And display of cell balancing status. 4. Warning of cells' temperature. Real time alarm and protection times for high/low temperature, charge/discharge overcurrent, short circuit, overvoltage and undervoltage. 5. Record warnings history that occur at every moment. 6. Support simultaneous connection of multiple batteries and calculation of serial and parallel connections. 7. Support the simultaneous viewing of the cells status and cells balance of multiple groups of batteries. 8. Compatible with POWERBELY batteries of different models. Hope POWERBELY can help you understand more about the convenience of battery use.
Screenshots
Verdict
The clearest difference is price: POWERBELY at Free against iS7's $14.99. POWERBELY also leads on in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 4 months). On ads 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
POWERBELY is free to download; iS7 costs $14.99 up front. iS7 sells 1 one-off in-app purchase. POWERBELY asks for nothing beyond the download.
iS7 ships an update every 4 months, POWERBELY every 2 weeks. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.
| Parameter | iS7 | POWERBELY |
|---|---|---|
| Price | $14.99 | Free โ better |
| Update frequency | Every 4 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPod |
| Requires iOS | 15.0 | 11.0 โ better |
| Further details โ not scored | ||
| Size | 43 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlo Trotti | Shenzhen Bely Energy Technology Co., Ltd. |
In-app purchases
iS7
- Alarms$2.99
POWERBELY
No in-app purchases









