# LWF Observer vs ChargeMAX

The clearest difference is update cadence: LWF Observer at weekly against ChargeMAX's every 5 weeks. 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.

LWF Observer ships an update weekly, ChargeMAX every 5 weeks. Both last shipped on October 27, 2026.

## The numbers

| Metric | LWF Observer | ChargeMAX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Size | 35 MB | 36 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LWF TECHNOLOGIES LTD](https://appshunter.io/developer/1713708772) | [Foshan Dalv New Energy Technology Co.. Ltd](https://appshunter.io/developer/1754741143) |

## What reviewers say

### LWF Observer

[App page](https://appshunter.io/ios/app/lwf-observer/id6470452164)

**In-app purchases:** none


### ChargeMAX

[App page](https://appshunter.io/ios/app/chargemax/id6596742999)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LWF Observer free?

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

### Is ChargeMAX free?

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

### Do LWF Observer or ChargeMAX have ads?

Neither LWF Observer nor ChargeMAX shows ads.

### Which is updated more often, LWF Observer or ChargeMAX?

LWF Observer ships an update weekly, and ChargeMAX every 5 weeks. Most recently, LWF Observer was updated on October 27, 2026 and ChargeMAX on October 27, 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.*