# GT FMS vs billinvoice

The clearest difference is update cadence: billinvoice at every 2 months against GT FMS's every 28 months. billinvoice also leads on iOS requirement (15.1 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.

GT FMS ships an update every 28 months, billinvoice every 2 months. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | GT FMS | billinvoice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 months** |
| Size | 134 MB | 33 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GT Business Systems Sdn Bhd](https://appshunter.io/developer/1638884035) | [Gcan info opc pvt.ltd](https://appshunter.io/developer/1745315383) |

## What reviewers say

### GT FMS

[App page](https://appshunter.io/ios/app/gt-fms/id1506572730)

**Features:** macOS Compatibility

**In-app purchases:** none


### billinvoice

[App page](https://appshunter.io/ios/app/billinvoice/id6784236864)

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

**In-app purchases:** none


## Frequently asked questions

### Is GT FMS free?

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

### Is billinvoice free?

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

### Do GT FMS or billinvoice have ads?

Neither GT FMS nor billinvoice shows ads.

### Which is updated more often, GT FMS or billinvoice?

GT FMS ships an update every 28 months, and billinvoice every 2 months. Most recently, GT FMS was updated on October 27, 2026 and billinvoice on October 31, 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.*