# Workflow Prinex vs Invoice Maker App

The clearest difference is in-app purchases: Workflow Prinex at none against Invoice Maker App's 3. Workflow Prinex also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). Invoice Maker App's advantage is update cadence (fortnightly vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Invoice Maker App sells 3 in-app purchases, starting at $3.99 per 7 days. Workflow Prinex asks for nothing beyond the download.

Workflow Prinex ships an update every 3 months, Invoice Maker App fortnightly. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Workflow Prinex | Invoice Maker App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 15 MB | 14 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PRINEX](https://appshunter.io/developer/1249241358) | [Pattern Consulting OOD](https://appshunter.io/developer/1818399108) |

## What reviewers say

### Workflow Prinex

[App page](https://appshunter.io/ios/app/workflow-prinex/id1319218859)

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

**In-app purchases:** none


### Invoice Maker App

[App page](https://appshunter.io/ios/app/invoice-maker-app-simplebooks/id6746766871)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $3.99 | per 7 days |
| Annual Plan | $29.99 | per year |
| Lifetime Plan | $34.99 | one-time |


## Frequently asked questions

### Is Workflow Prinex free?

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

### Is Invoice Maker App free?

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

### Do Workflow Prinex or Invoice Maker App have ads?

Neither Workflow Prinex nor Invoice Maker App shows ads.

### Which is updated more often, Workflow Prinex or Invoice Maker App?

Workflow Prinex ships an update every 3 months, and Invoice Maker App fortnightly. Most recently, Workflow Prinex was updated on September 23, 2026 and Invoice Maker App on September 21, 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.*