# EVOLVE BATTERY vs Kmilight

The clearest difference is update cadence: Kmilight at monthly against EVOLVE BATTERY's every 4 months. 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.

EVOLVE BATTERY ships an update every 4 months, Kmilight monthly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | EVOLVE BATTERY | Kmilight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.2 (5 ratings)](https://appshunter.io/ios/app/kmilight/id1605691215/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free |
| Size | 38 MB | 72 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [应刚 郑](https://appshunter.io/developer/1446858821) | [Jiangsu Konsung Bio-Medical Technology Co., Ltd.](https://appshunter.io/developer/1137866872) |

## What reviewers say

### EVOLVE BATTERY

[App page](https://appshunter.io/ios/app/evolve-battery/id1568415457)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kmilight

[App page](https://appshunter.io/ios/app/kmilight/id1605691215)

This app synchronizes and manages health data from connected pulse oximeters and wrist-worn devices, including blood oxygen saturation, heart rate, and sleep monitoring. It analyzes sleep data, generates trend charts, and can display data from connected ventilators, though this data is for informational purposes only.

**Highlights:** Blood oxygen saturation monitoring, Heart rate tracking, Sleep monitoring and analysis, Health data trend charting, Ventilator data display, Data management and storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EVOLVE BATTERY free?

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

### Is Kmilight free?

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

### Do EVOLVE BATTERY or Kmilight have ads?

Neither EVOLVE BATTERY nor Kmilight shows ads.

### Which is updated more often, EVOLVE BATTERY or Kmilight?

EVOLVE BATTERY ships an update every 4 months, and Kmilight monthly. Most recently, EVOLVE BATTERY was updated on October 15, 2026 and Kmilight on October 7, 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.*