# Bass vs Invox

The clearest difference is in-app purchases: Invox at none against Bass's 3. Invox also leads on update cadence (weekly vs every 2 weeks). Bass's advantage is iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Bass sells 3 in-app purchases, starting at $3.99 per 7 days. Invox asks for nothing beyond the download.

Bass ships an update every 2 weeks, Invox weekly. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Bass | Invox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 15 MB | 6 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [晓伟 李](https://appshunter.io/developer/1533261370) | [Mohamed Fakiri](https://appshunter.io/developer/1397160283) |

## What reviewers say

### Bass

[App page](https://appshunter.io/ios/app/bass-booster/id6742766017)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week Subscribe | $3.99 | per 7 days |
| Month Subscribe | $9.99 | per month |
| Year Subscribe | $34.99 | per year |


### Invox

[App page](https://appshunter.io/ios/app/invox-pdf-document-scanner/id6745332000)

**In-app purchases:** none


## Frequently asked questions

### Is Bass free?

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

### Is Invox free?

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

### Do Bass or Invox have ads?

Neither Bass nor Invox shows ads.

### Which is updated more often, Bass or Invox?

Bass ships an update every 2 weeks, and Invox weekly. Most recently, Bass was updated on September 14, 2026 and Invox on September 18, 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.*