Invoice Rex vs FinZenFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Invoice Rex
Read full descriptionHide full description
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/
FinZenFlow
Read full descriptionHide full description
FinZenFlow helps you organize personal finances clearly, without advertising or tracking. Manage accounts, income, expenses, transfers, categories, tags, payees, and recurring transactions. Build monthly and yearly budgets, plan upcoming transactions, and use automations that detect patterns. View reports for income, expenses, cash flow, and net worth, with comparisons and exports. The free plan stores data on the device; Premium can sync it through your private iCloud CloudKit database and adds biometric lock, advanced import and export, and backups. Free for up to 2 accounts and 20 categories; Premium removes the limits. FinZenFlow does not provide financial, tax, or legal advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: FinZenFlow at every 3 days against Invoice Rex's monthly. On price, ads, in-app purchases 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 and FinZenFlow sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Invoice Rex ships an update monthly, FinZenFlow every 3 days. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.
| Parameter | Invoice Rex | FinZenFlow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Charlie Monroe Software, s.r.o. | Francisco J. Camacho |
In-app purchases
Invoice Rex
- Monthly14 Days trial$4.991 Month
- Yearly14 Days trial$49.991 Year
FinZenFlow
- FinZenFlow Family Premium1 Month trial$3.991 Month
- FinZenFlow Family Premium1 Year trial$39.991 Year
Questions
Is Invoice Rex free?
Is FinZenFlow free?
Do Invoice Rex or FinZenFlow have ads?
Which is updated more often, Invoice Rex or FinZenFlow?
Other comparisons
