# b vs A1W Charge

The clearest difference is update cadence: A1W Charge at every 3 weeks against b's every 16 months. b's advantage is iOS requirement (10.0 vs 13.0). 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.

b ships an update every 16 months, A1W Charge every 3 weeks. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | b | A1W Charge |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 53 MB | 48 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [RHT INDUSTRIES LIMITED](https://appshunter.io/developer/1494989445) | [A1 Workman ( Engineering) Limited](https://appshunter.io/developer/1755324011) |

## What reviewers say

### b

[App page](https://appshunter.io/ios/app/b-mola/id1494989446)

Control and monitor your smart air purifiers remotely. Manage power, set timers, and adjust fan speed for optimal indoor air quality. Requires compatible device connection.

**Highlights:** Connect/disconnect mobile device, Switch air purifier on/off, Control turbo power, Set automatic timer, Remote monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### A1W Charge

[App page](https://appshunter.io/ios/app/a1w-charge/id6505136627)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is b free?

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

### Is A1W Charge free?

A1W Charge is free to download, with no in-app purchases.

### Do b or A1W Charge have ads?

Neither b nor A1W Charge shows ads.

### Which is updated more often, b or A1W Charge?

b ships an update every 16 months, and A1W Charge every 3 weeks. Most recently, b was updated on October 24, 2026 and A1W Charge on October 6, 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.*