# CS vs WattGuru

The clearest difference is in-app purchases: CS at none against WattGuru's 1. CS also leads on iOS requirement (15.0 vs 17.6). WattGuru's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. WattGuru sells 1 one-off in-app purchase. CS asks for nothing beyond the download.

CS ships an update every 5 weeks, WattGuru fortnightly. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CS | WattGuru |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 8 MB | 9 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Forster Individual Batteries GmbH](https://appshunter.io/developer/1568985596) | [Michael Caklec](https://appshunter.io/developer/974662614) |

## What reviewers say

### CS

[App page](https://appshunter.io/ios/app/cs-batteries-smart-connect/id6479569677)

Monitor your lithium battery's performance directly from your phone. View key metrics like charge, voltage, and current, along with detailed battery information and settings. Connects via Bluetooth 5.0 for convenient, real-time data access.

**Highlights:** Real-time battery monitoring, View State of Charge, Voltage, Current, Power, Access detailed battery info (Status, Cycles, Switches), Modify battery name, Bluetooth 5.0 connectivity, Company contact and website information

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

**In-app purchases:** none


### WattGuru

[App page](https://appshunter.io/ios/app/wattguru/id6741865891)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WattGuru Full Version | $3.99 | one-time |


## Frequently asked questions

### Is CS free?

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

### Is WattGuru free?

WattGuru is free to download, with in-app purchases available.

### Do CS or WattGuru have ads?

Neither CS nor WattGuru shows ads.

### Which is updated more often, CS or WattGuru?

CS ships an update every 5 weeks, and WattGuru fortnightly. Most recently, CS was updated on November 8, 2026 and WattGuru on November 4, 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.*