Comparison

S7 Link vs POWERBELY

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

Head to head
About

S7 Link

Features
Read full description

A NEW APP, THE FUNCTIONS YOU KNOW โ€ข All the functions and tabs of previous versions are kept: pushbutton panel, manual commands, variables, alarms, point tables, PLC links, CPU status, date and time, backup and sharing โ€ข Updating keeps your connections, tables, options and purchases; backups made with iS7 can be restored SUPPORTED PLCS CPUs of the S7-300, S7-400, S7-1200 and S7-1500 families and LOGO!, reachable on the network through ISO on TCP (RFC 1006). S7-1200 and S7-1500 need PUT/GET access enabled and DBs without optimized access. IN-APP PURCHASE Alarm management on real PLCs is available as an in-app purchase. Whoever has already bought it keeps it. SAFETY S7 Link can write to PLCs and act on machinery in operation. Use it with care and at your own risk, and do not rely on it for safety functions. In the background, iOS decides when alarms are checked, and it can be hours apart. Requires iOS 26 or later. Siemens, SIMATIC and S7 are trademarks of Siemens AG. S7 Link is an independent product, not affiliated with or endorsed by Siemens.

About

POWERBELY

Features
Read full description

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

S7 Link4 screens
POWERBELY4 screens

Verdict

The call

The clearest difference is price: POWERBELY at Free against S7 Link's $14.99. POWERBELY also leads on in-app purchases (none vs 3) 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

POWERBELY is free to download; S7 Link costs $14.99 up front. S7 Link sells 3 one-off in-app purchases. POWERBELY asks for nothing beyond the download.

UpkeepUpdate frequency

S7 Link ships an update every 4 months, POWERBELY every 2 weeks. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.

Scorecard4 real differences ยท 2 level
S7 Link versus POWERBELY: the parameters behind the verdict, then further details
ParameterS7 LinkPOWERBELY
Price$14.99Free โ€” better
Update frequencyEvery 4 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.011.0 โ€” better
Further details โ€” not scored
Size10 MB14 MB
Age rating4+4+
DeveloperCarlo TrottiShenzhen Bely Energy Technology Co., Ltd.

In-app purchases

3 purchases

S7 Link

One-time3
  • Alarms$2.99
  • Charts$2.99
  • OPC Client$4.99
None

POWERBELY

No in-app purchases

Questions

Is S7 Link free?
S7 Link costs $14.99, and also offers in-app purchases.
Is POWERBELY free?
POWERBELY is free to download, with no in-app purchases.
Do S7 Link or POWERBELY have ads?
Neither S7 Link nor POWERBELY shows ads.
Which is updated more often, S7 Link or POWERBELY?
S7 Link ships an update every 4 months, and POWERBELY every 2 weeks. Most recently, S7 Link was updated on November 10, 2026 and POWERBELY on November 7, 2026.

Other comparisons