# Invoice Rex vs CardNeuro

The clearest difference is in-app purchases: CardNeuro at none against Invoice Rex's 2. CardNeuro also leads on update cadence (every 4 days vs monthly) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Invoice Rex sells 2 in-app purchases, starting at $4.99 per month. CardNeuro asks for nothing beyond the download.

Invoice Rex ships an update monthly, CardNeuro every 4 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Invoice Rex | CardNeuro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cardneuro/id6785665759/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free |
| Size | 18 MB | 45 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Charlie Monroe Software, s.r.o.](https://appshunter.io/developer/647791583) | [Parth Patel](https://appshunter.io/developer/6785665761) |

## What reviewers say

### Invoice Rex

[App page](https://appshunter.io/ios/app/invoice-rex/id6480509935)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


### CardNeuro

[App page](https://appshunter.io/ios/app/cardneuro/id6785665759)

This app automatically identifies your location and suggests the best credit card for maximum rewards at that merchant. It helps you track card balances and due dates, ensuring you never miss a payment or a reward opportunity.

**Highlights:** Automatic merchant identification via GPS, Best card suggestion for maximum rewards, Direct opening to Apple Wallet, Track up to 5 credit cards, View balances and due dates, Payment due date alerts

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Rex free?

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

### Is CardNeuro free?

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

### Do Invoice Rex or CardNeuro have ads?

Neither Invoice Rex nor CardNeuro shows ads.

### Which is updated more often, Invoice Rex or CardNeuro?

Invoice Rex ships an update monthly, and CardNeuro every 4 days. Most recently, Invoice Rex was updated on October 27, 2026 and CardNeuro on October 28, 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.*