# Simple Invoice Maker Generator vs Mobile Doc Fax

The clearest difference is update cadence: Simple Invoice Maker Generator at fortnightly against Mobile Doc Fax's every 3 months. Simple Invoice Maker Generator also leads on ratings volume (12 vs 2) and device support (3 vs 1). Mobile Doc Fax's advantage is rating (5.0 vs 4.8). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Simple Invoice Maker Generator sells 3 in-app purchases, starting at $2.99 per 7 days and Mobile Doc Fax sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Mobile Doc Fax holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Simple Invoice Maker Generator has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Simple Invoice Maker Generator ships an update fortnightly, Mobile Doc Fax every 3 months. The most recent releases landed on September 9, 2026 and July 17, 2026 respectively.

## The numbers

| Metric | Simple Invoice Maker Generator | Mobile Doc Fax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (12 ratings)](https://appshunter.io/ios/app/simple-invoice-maker-generator/id6717593349/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mobile-doc-fax/id6752902553/reviews)** |
| Number of ratings | **12** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 122 MB | 9 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GULNUR DUZGUN](https://appshunter.io/developer/1770469191) | [Pond Shackleford LLC](https://appshunter.io/developer/1856925137) |

## What reviewers say

### Simple Invoice Maker Generator

[App page](https://appshunter.io/ios/app/simple-invoice-maker-generator/id6717593349)

Quickly create and send professional invoices and estimates for your business. Track payments and expenses with smart receipt generation and automatic calculations. Ideal for freelancers, contractors, and small businesses.

**Highlights:** Create professional invoices, Generate estimates, Track payments, Manage expenses, Smart receipt generation, Automatic calculations

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essential Pack Subscription | $2.99 | per 7 days |
| Essential Pack Subscription | $4.99 | per month |
| Essential Pack Subscription | $39.99 | per year |


### Mobile Doc Fax

[App page](https://appshunter.io/ios/app/mobile-doc-fax/id6752902553)

Send and receive documents instantly from your smartphone. Scan papers, attach files from cloud storage, and add electronic signatures. Create professional invoices and fax cover sheets with smart templates.

**Highlights:** Scan documents with camera, Attach files from cloud, Add electronic signatures, Create fax cover sheets, Generate invoices, View sending history

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Doc Premium | $4.99 | per 7 days |
| Fax Premium | $4.99 | per 7 days |


## Frequently asked questions

### Is Simple Invoice Maker Generator free?

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

### Is Mobile Doc Fax free?

Mobile Doc Fax is free to download, with in-app purchases available.

### Which has better reviews, Simple Invoice Maker Generator or Mobile Doc Fax?

Mobile Doc Fax is rated higher. Simple Invoice Maker Generator averages 4.8 out of 5 from 12 ratings, while Mobile Doc Fax averages 5.0 from 2 ratings.

### Do Simple Invoice Maker Generator or Mobile Doc Fax have ads?

Neither Simple Invoice Maker Generator nor Mobile Doc Fax shows ads.

### Which is updated more often, Simple Invoice Maker Generator or Mobile Doc Fax?

Simple Invoice Maker Generator ships an update fortnightly, and Mobile Doc Fax every 3 months. Most recently, Simple Invoice Maker Generator was updated on September 9, 2026 and Mobile Doc Fax on July 17, 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.*