# Power vs GZBtech

The clearest difference is update cadence: Power at every 2 months against GZBtech's every 17 months. Power also leads on iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Power ships an update every 2 months, GZBtech every 17 months. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Power | GZBtech |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 17 months |
| Monetization | Free | — |
| Size | 11 MB | 208 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Power Sonic Europe Limited](https://appshunter.io/developer/1460233457) | [CUHOM INC.](https://appshunter.io/developer/1801912949) |

## What reviewers say

### Power

[App page](https://appshunter.io/ios/app/power-sonic-lithium/id6446947396)

Monitor battery health in real-time, displaying voltage, current, and power. Get instant alerts for critical conditions like over-temperature or under-voltage. Compare individual cell voltages and manage your battery's on/off status with ease.

**Highlights:** Real-time parameter display (voltage, current, power), Battery on/off control, Single battery voltage and alarm status, Cell voltage difference comparison, Real-time critical condition alarms, Warning event logging

**Features:** macOS Compatibility

**In-app purchases:** none


### GZBtech

[App page](https://appshunter.io/ios/app/gzbtech/id6743202072)

**In-app purchases:** none


## Frequently asked questions

### Is Power free?

Power is free to download, with no in-app purchases.

### Is GZBtech free?

GZBtech is free to download, with no in-app purchases.

### Do Power or GZBtech have ads?

Neither Power nor GZBtech shows ads.

### Which is updated more often, Power or GZBtech?

Power ships an update every 2 months, and GZBtech every 17 months. Most recently, Power was updated on September 8, 2026 and GZBtech on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*