# InvoiceZap vs STYM

The clearest difference is iOS requirement: STYM at 16.0 against InvoiceZap's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. InvoiceZap sells 2 in-app purchases, starting at $9.99 per month and STYM sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | InvoiceZap | STYM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Size | 24 MB | 86 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fancygames, Ltd.](https://appshunter.io/developer/355409981) | [Geoplan s.r.l.](https://appshunter.io/developer/1803191961) |

## What reviewers say

### InvoiceZap

[App page](https://appshunter.io/ios/app/invoicezap-invoice-maker/id6746954530)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InvoiceZap Pro | $9.99 | per month |
| InvoiceZap Pro | $69.99 | per year |


### STYM

[App page](https://appshunter.io/ios/app/stym-smart-estimate-maker/id6749853242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $12.99 | per month |
| Premium Annual | $89.99 | per year |
| Annuale | $89.99 | per year |


## Frequently asked questions

### Is InvoiceZap free?

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

### Is STYM free?

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

### Do InvoiceZap or STYM have ads?

Neither InvoiceZap nor STYM shows ads.

### Which is updated more often, InvoiceZap or STYM?

InvoiceZap ships an update every 4 days, and STYM every 4 days. Most recently, InvoiceZap was updated on October 12, 2026 and STYM on October 8, 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.*