# Invoice Maker vs PreventivOk

The clearest difference is update cadence: PreventivOk at fortnightly against Invoice Maker's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Invoice Maker sells 2 in-app purchases, starting at $2.99 per month and PreventivOk sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Invoice Maker ships an update monthly, PreventivOk fortnightly. The most recent releases landed on October 25, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Invoice Maker | PreventivOk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/invoice-maker-estimates-app/id1629304943/reviews)** | — |
| Number of ratings | **14** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 91 MB | 45 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nadim Radjab](https://appshunter.io/developer/1600041613) | [Antonio Augello](https://appshunter.io/developer/1844412810) |

## What reviewers say

### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-estimates-app/id1629304943)

Streamline your billing and get paid faster with this intuitive invoicing app. Create professional, customizable invoices and estimates with ease, track payments in real-time, and manage client information efficiently. Access your data from anywhere with cloud-based technology.

**Highlights:** Customizable invoices and templates, Cloud-based access, Scheduling and reminders, Real-time payment tracking, Add logo and signature, Client management

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Subscription | $2.99 | per month |
| Yearly Subscription | $26.99 | per year |


### PreventivOk

[App page](https://appshunter.io/ios/app/preventivok/id6753686989)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced | $2.99 | per month |
| Premium | $4.99 | per month |


## Frequently asked questions

### Is Invoice Maker free?

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

### Is PreventivOk free?

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

### Do Invoice Maker or PreventivOk have ads?

Neither Invoice Maker nor PreventivOk shows ads.

### Which is updated more often, Invoice Maker or PreventivOk?

Invoice Maker ships an update monthly, and PreventivOk fortnightly. Most recently, Invoice Maker was updated on October 25, 2026 and PreventivOk on October 12, 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.*