# DUO Payroll vs VMS BI

The clearest difference is update cadence: VMS BI at every 4 months against DUO Payroll's every 31 months. DUO Payroll's advantage is iOS requirement (15.6 vs 17.0). 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.

DUO Payroll ships an update every 31 months, VMS BI every 4 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DUO Payroll | VMS BI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 4 months** |
| Size | 33 MB | 32 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DUO Accounting and Services Company Limited](https://appshunter.io/developer/1651895806) | [VGENZ COMPANY LIMITED](https://appshunter.io/developer/1804026927) |

## What reviewers say

### DUO Payroll

[App page](https://appshunter.io/ios/app/duo-payroll/id6444049470)

**Features:** macOS Compatibility

**In-app purchases:** none


### VMS BI

[App page](https://appshunter.io/ios/app/vms-bi/id6743693915)

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

**In-app purchases:** none


## Frequently asked questions

### Is DUO Payroll free?

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

### Is VMS BI free?

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

### Do DUO Payroll or VMS BI have ads?

Neither DUO Payroll nor VMS BI shows ads.

### Which is updated more often, DUO Payroll or VMS BI?

DUO Payroll ships an update every 31 months, and VMS BI every 4 months. Most recently, DUO Payroll was updated on October 14, 2026 and VMS BI on October 24, 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.*