# COMAX Service vs Invoice Maker

The clearest difference is in-app purchases: COMAX Service at none against Invoice Maker's 3. COMAX Service also leads on ads (none vs shown). Invoice Maker's advantage is update cadence (every 5 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Maker sells 3 in-app purchases, starting at $9.99 per 7 days. COMAX Service asks for nothing beyond the download.

COMAX Service ships an update every 4 months, Invoice Maker every 5 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | COMAX Service | Invoice Maker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 87 MB | 65 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Native Data Systems (1995) LTD.](https://appshunter.io/developer/581907863) | [METKO LABS BILISIM ITHALAT VE IHRACAT TICARET LIMITED SIRKETI](https://appshunter.io/developer/1671640855) |

## What reviewers say

### COMAX Service

[App page](https://appshunter.io/ios/app/comax-service/id1610327383)

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

**In-app purchases:** none


### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-estimates/id6753343850)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Generator | $9.99 | per 7 days |
| Invoice Generator | $29.99 | per month |
| Invoice Generator | $59.99 | per year |


## Frequently asked questions

### Is COMAX Service free?

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

### Is Invoice Maker free?

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

### Do COMAX Service or Invoice Maker have ads?

Invoice Maker shows ads; COMAX Service does not.

### Which is updated more often, COMAX Service or Invoice Maker?

COMAX Service ships an update every 4 months, and Invoice Maker every 5 days. Most recently, COMAX Service was updated on October 7, 2026 and Invoice Maker on October 13, 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.*