Best apps like Invoice Rex

9+ similar apps compared and reviewed

4.3 avg rating
8 free apps
Updated August 2026
Invoice Rex
Invoice Rex
Charlie Monroe Software, s.r.o.

Whether you want more options like Invoice Rex or a completely different take on the same concept, our curated list of 9+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Invoice Rex

GreenBooks: Money Manager#1

GreenBooks: Money Manager by Savings LLC

Take control of your money
Editor's Choice
💰 Finance
4.7😊(234 ratings)
FreeIn-App Purchases
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GreenBooks: Money Manager screenshot 6

This app simplifies personal finance management by consolidating all your accounts in one place. It allows for easy transaction entry, custom spending categories, and bill tracking, all while prioritizing user privacy with no advertisements or data collection.

What We Love

  • 👍 Simple and straightforward
  • 🚀 Easy to use and navigate
  • 💡 Helpful for tracking expenses and budgeting
  • 🔒 Secure with iCloud sync

Room to Improve

  • 🐛 Occasional syncing issues
  • 🐛 Miscalculation of account balances
  • 💡 Lack of advanced features like budgeting tools
Potassius - BANANO Wallet#3

Potassius - BANANO Wallet by Perish LLC

Worth Considering
💰 Finance
3.0(2 ratings)
Free
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Manage your cryptocurrency with this secure wallet. Send, receive, and gift digital currency instantly worldwide. Features include encrypted messaging, transaction history, and multiple account support.

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4
CalConvert: Pro Calculator $€
CalConvert: Pro Calculator $€
CalConvert: Pro Calculator $€
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This app offers a powerful scientific calculator, extensive unit conversion capabilities across dozens of categories, and real-time foreign exchange rates for over 150 currencies. It also includes a world clock and convenient home screen widgets for quick access to its functions.

Advanced scientific calculatorExtensive unit conversions (600+ units)Real-time currency exchange rates (150+ currencies)
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Stocks 2 Buy
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Know when to buy/sell stocks
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This app helps traders and investors make informed decisions by providing tools for stock discovery, portfolio optimization, and risk management. It offers AI-powered research summaries, trade recommendations, and fundamental comparisons to assess stock performance and potential.

Stock and ETF discovery based on risk appetitePortfolio optimization with risk managementPeer-based fundamental stock comparison
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Subscriptions Manager
Subscriptions Manager
Subscriptions Manager
Subscriptions Tracker App
Free
$0.99 | 100% OFF

Easily track all your recurring payments and get timely reminders before they renew. Customize your subscriptions with unique icons and colors, and sort them for quick access. Enjoy a clean, ad-free experience with customizable themes and dark mode support.

Track unlimited subscriptionsAdd predefined or custom subscriptionsReceive renewal notifications
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AI Invoice Maker & Receipt
AI Invoice Maker & Receipt
AI Invoice Maker & Receipt
Simple Invoice Generator
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Create, send, and track professional invoices and estimates on the go. This app helps small business owners and freelancers manage payments, customize templates with branding, and sync data across devices for easy financial management.

Create professional invoices and estimatesCustomize with logo and brand colorsTrack paid and unpaid bills
💰 Finance
(4)
free with in-app purchases
8
iCurrency Exchange Pro
iCurrency Exchange Pro
iCurrency Exchange Pro
Currency Converter
Free

Easily convert currencies with real-time exchange rates. View historical data graphically and set custom alerts. Supports a wide range of currencies and offers Apple Watch integration.

Real-time exchange rate updatesDual currency conversionHistorical rate data (365 days)
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Suber - regular expenses
Suber - regular expenses
Suber - regular expenses
Control your spending
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Easily track recurring expenses using customizable templates and receive timely payment reminders. Monitor your spending habits with daily, weekly, monthly, and yearly cost breakdowns to maintain financial awareness.

Add expenses with templatesCreate custom expense templatesCalculate total cost by period
💰 Finance
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