Invoice Rex vs CardNeuro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Invoice Rex
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Be the king of your invoices. Invoice Rex is a powerful invoicing tool that allows you to issue invoices, customize their appearance and a lot more while synchronizing seamlessly between all of your devices (macOS, iOS and iPadOS) securely via iCloud without any content being stored on our or anyone else's servers. Aside from issuing invoices, Invoice Rex allows you to track other business-related documents like bank statements, cash receipts, storage, journey log and much more. Invoice Rex is designed with you and your comfort in mind - it is simple to use, yet powerful. But if you need any help, there's always a user guide available right from within the app. And if that does not answer your questions, there's a support dialog in the app that allows you to contact us with just a few clicks or taps. Customize the template for printing invoices, bills and other documents just the way you like. Invoice Rex has been written using the latest UI technologies Apple offers, allowing for a single implementation of both its core and the UI to be shared across the entire Apple ecosystem. Invoice Rex is free to use for the first 14 days, then a subscription is required to use the app. You can choose to be billed either monthly or annually. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
CardNeuro
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.
- 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
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CardNeuro is the smartest way to manage your credit cards. Every time you open the app, CardNeuro uses GPS to detect where you are, identifies the merchant, and instantly tells you which card in your wallet earns the most rewards there — then opens Apple Wallet directly to it. No typing, no research, no guessing. NEVER MISS REWARDS See exactly which card to use at every merchant — dining, grocery, travel, gas, shopping and more. CardNeuro matches your cards to the moment so you earn the maximum cash back or points every single time. TRACK ALL YOUR CARDS IN ONE PLACE Add up to 5 cards and connect them via Plaid. See balances, payment due dates, and get alerts before anything is due. Know exactly what you owe and when.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Invoice Rex | CardNeuro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 18 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | Charlie Monroe Software, s.r.o. | Parth Patel |
In-app purchases
Invoice Rex
- Monthly14 Days trial$4.991 Month
- Yearly14 Days trial$49.991 Year
CardNeuro
No in-app purchases
