# Estimate & Invoice Maker vs Simple Invoice PDF

The clearest difference is update cadence: Estimate & Invoice Maker at daily against Simple Invoice PDF's fortnightly. Estimate & Invoice Maker also leads on iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Estimate & Invoice Maker sells 1 one-off in-app purchase and Simple Invoice PDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Estimate & Invoice Maker ships an update daily, Simple Invoice PDF fortnightly. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Estimate & Invoice Maker | Simple Invoice PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Size | 33 MB | 2 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Apenta](https://appshunter.io/developer/1612238829) | [Serghei Eschin](https://appshunter.io/developer/6774241012) |

## What reviewers say

### Estimate & Invoice Maker

[App page](https://appshunter.io/ios/app/estimate-and-invoice-maker/id6757620368)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $29.99 | one-time |


### Simple Invoice PDF

[App page](https://appshunter.io/ios/app/simple-invoice-pdf/id6788337612)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple Invoice Pro | $9.99 | one-time |


## Frequently asked questions

### Is Estimate & Invoice Maker free?

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

### Is Simple Invoice PDF free?

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

### Do Estimate & Invoice Maker or Simple Invoice PDF have ads?

Neither Estimate & Invoice Maker nor Simple Invoice PDF shows ads.

### Which is updated more often, Estimate & Invoice Maker or Simple Invoice PDF?

Estimate & Invoice Maker ships an update daily, and Simple Invoice PDF fortnightly. Most recently, Estimate & Invoice Maker was updated on September 10, 2026 and Simple Invoice PDF on September 19, 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.*