# Invoice Center Pro vs SIPSpace

The clearest difference is in-app purchases: SIPSpace at none against Invoice Center Pro's 3. Invoice Center Pro's advantage is update cadence (every 3 weeks vs every 4 months) and device support (4 vs 1). On price and ads there is nothing between them.

Both are free to download. Invoice Center Pro sells 3 in-app purchases, starting at $12.99 per month. SIPSpace asks for nothing beyond the download.

Invoice Center Pro ships an update every 3 weeks, SIPSpace every 4 months. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Invoice Center Pro | SIPSpace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (93 ratings)](https://appshunter.io/ios/app/invoice-center-pro/id878327332/reviews)** | — |
| Number of ratings | **93** | — |
| Positive reviews | 55.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Subscription | — |
| Size | 43 MB | 30 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Starkode Limited Company](https://appshunter.io/developer/874698946) | [Switzerland Innovation Park Basel Area AG](https://appshunter.io/developer/1819121450) |

## What reviewers say

### Invoice Center Pro

[App page](https://appshunter.io/ios/app/invoice-center-pro/id878327332)

Easily create and send invoices and estimates for products or services. Get paid faster with on-the-spot billing, customizable templates, and secure payment collection. Manage contracts and track inventory with a built-in barcode scanner.

**Highlights:** Create invoices and estimates, Collect payments and taxes, Email and print PDF invoices, Barcode scanner for billing, Manage contracts and templates, Offline mode, Customizable reports

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Invoices | $12.99 | per month |
| Premium Suite | $24.99 | per month |
| Premium Suite Annual | $99.99 | per year |


### SIPSpace

[App page](https://appshunter.io/ios/app/sipspace/id6746951628)

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Center Pro free?

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

### Is SIPSpace free?

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

### Do Invoice Center Pro or SIPSpace have ads?

Neither Invoice Center Pro nor SIPSpace shows ads.

### Which is updated more often, Invoice Center Pro or SIPSpace?

Invoice Center Pro ships an update every 3 weeks, and SIPSpace every 4 months. Most recently, Invoice Center Pro was updated on September 28, 2026 and SIPSpace 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.*