# Whisper Lithium vs Cool Guard

The clearest difference is update cadence: Whisper Lithium at every 3 weeks against Cool Guard's every 2 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.

Whisper Lithium ships an update every 3 weeks, Cool Guard every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Whisper Lithium | Cool Guard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/whisper-lithium/id6461822734/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 32 MB | 22 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [江西达伙网络科技有限公司](https://appshunter.io/developer/1234844673) | [TouchLync, Inc](https://appshunter.io/developer/1740499417) |

## What reviewers say

### Whisper Lithium

[App page](https://appshunter.io/ios/app/whisper-lithium/id6461822734)

This app monitors and manages lithium battery systems in real-time. It displays critical battery parameters, alerts users to potential issues like over-temperature or voltage anomalies, and helps prolong battery life and enhance pack stability. It also supports viewing multiple battery statuses and offers online assistance.

**Highlights:** Real-time voltage, current, and power display, Single battery voltage and alarm status, Cell comparison and balance display, Temperature and short circuit warnings, Warning event logging, Support for multiple battery viewing, Online assistance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Cool Guard

[App page](https://appshunter.io/ios/app/cool-guard-qc-test-app/id6502345075)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Whisper Lithium free?

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

### Is Cool Guard free?

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

### Do Whisper Lithium or Cool Guard have ads?

Neither Whisper Lithium nor Cool Guard shows ads.

### Which is updated more often, Whisper Lithium or Cool Guard?

Whisper Lithium ships an update every 3 weeks, and Cool Guard every 2 months. Most recently, Whisper Lithium was updated on November 3, 2026 and Cool Guard on October 30, 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.*