# Invoice Maker by SPK vs Simple Invoice Bill Maker

The clearest difference is rating: Invoice Maker by SPK at 4.8 against Simple Invoice Bill Maker's 4.2. Invoice Maker by SPK also leads on ratings volume (911 vs 6) and iOS requirement (13.0 vs 17). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Invoice Maker by SPK sells 9 in-app purchases, starting at $4.99 per month and Simple Invoice Bill Maker sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Invoice Maker by SPK holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Invoice Maker by SPK has 911 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 73% of Invoice Maker by SPK's written reviews are positive against 69% of Simple Invoice Bill Maker's.

Invoice Maker by SPK ships an update weekly, Simple Invoice Bill Maker every 10 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Invoice Maker by SPK | Simple Invoice Bill Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (911 ratings)](https://appshunter.io/ios/app/invoice-maker-by-spk/id1575877820/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/simple-invoice-bill-maker/id6737187790/reviews) |
| Number of ratings | **911** | 6 |
| Positive reviews | **73.3% of reviews** | 69.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 30 MB | 26 MB |
| Requires iOS | **13.0** | 17 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [SPK Studios LLC](https://appshunter.io/developer/1575877822) | [IT WAVES](https://appshunter.io/developer/1596113244) |

## What reviewers say

### Invoice Maker by SPK

[App page](https://appshunter.io/ios/app/invoice-maker-by-spk/id1575877820)

Create and send professional PDF invoices and estimates quickly and easily. This ad-free, watermark-free app is ideal for small business owners, consultants, and freelancers on the go. Customize templates, track clients, and manage your billing efficiently.

**Highlights:** Create unlimited invoices and estimates, No ads or watermarks, Customizable invoice fields, Client list management, Multiple sharing options (email, WhatsApp, text), Convert estimates to invoices, Company logo and signature upload

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| My Invoice Generator | $4.99 | per month |
| The Invoice Maker | $7.99 | per month |
| Invoice Maker App | $9.99 | per month |
| Invoice Maker Pro | $9.99 | per month |
| Smart Invoice Maker | $39.99 | per year |
| Quick Invoice Maker | $59.99 | per year |
| Invoice Maker Professional | $69.99 | per year |
| App Invoice Maker | $89.99 | per year |
| Invoice Maker Plus | $89.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and efficient
- 💡 Helpful features
- ⭐ Great app overall

**What reviewers complain about**

- 🐛 Data loss issues
- 🔒 Lack of device sync
- 📝 Limited item descriptions
- 🔧 Unreliable functionality

**Reported bugs**

- Invoices not updating correctly
- Inability to unsubscribe from paid features

**Requested features**

- Ability to sync data across devices
- Increased character limit for item descriptions
- Improved customer support


### Simple Invoice Bill Maker

[App page](https://appshunter.io/ios/app/simple-invoice-bill-maker/id6737187790)

Easily create and customize professional PDF invoices on your mobile device. This tool is designed for freelancers and small business owners needing quick and hassle-free billing solutions. Features include custom branding, client management, and automatic tax calculations.

**Highlights:** Quick PDF generation, Custom branding, Client management, Tax and discount calculator, On-the-go invoicing

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $1.99 | per 7 days |
| Premium Monthly | $3.99 | per month |
| Premium Yearly | $34.99 | per year |


## Frequently asked questions

### Is Invoice Maker by SPK free?

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

### Is Simple Invoice Bill Maker free?

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

### Which has better reviews, Invoice Maker by SPK or Simple Invoice Bill Maker?

Invoice Maker by SPK is rated higher. Invoice Maker by SPK averages 4.8 out of 5 from 911 ratings, while Simple Invoice Bill Maker averages 4.2 from 6 ratings.

### Do Invoice Maker by SPK or Simple Invoice Bill Maker have ads?

Neither Invoice Maker by SPK nor Simple Invoice Bill Maker shows ads.

### Which is updated more often, Invoice Maker by SPK or Simple Invoice Bill Maker?

Invoice Maker by SPK ships an update weekly, and Simple Invoice Bill Maker every 10 days. Most recently, Invoice Maker by SPK was updated on October 24, 2026 and Simple Invoice Bill Maker on October 25, 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.*