Best Iou Apps

246+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated September 2026

With an average user rating of 4.8★, the iou category is one of the App Store's strongest. Browse all 246+ apps we track, sorted so the most loved ones surface first.

Compare top Iou Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Who Owes Me - Payment TrackerWho Owes Me - Payment TrackerFree4.6★ (803)NoYesSep 2026
2IOU-MarkerIOU-MarkerFree5.0★ (8)YesYesSep 2026
3IOU - EnglishIOU - EnglishFreeNoNoMay 2026
4Payback: Debt & IOU TrackerPayback: Debt & IOU TrackerFreeNoYesSep 2026
5Debt & IOU TrackerDebt & IOU TrackerFreeNoYesJul 2026
6IOU: Split Receipts & ExpenseIOU: Split Receipts & ExpenseFree4.4★ (17)NoYesSep 2026
7Debty - Private Debt TrackerDebty - Private Debt TrackerFree4.8★ (131)NoYesSep 2026
8IOU - Promise & Favor TrackerIOU - Promise & Favor TrackerFreeNoYesJun 2026

Top Picks for Iou

Who Owes Me - Payment Tracker#1

Who Owes Me - Payment Tracker by Voglhuber

Remember debts, split expenses
Editor's Choice
💰 Finance
4.6😐(803 ratings)
FreeIn-App Purchases
Who Owes Me - Payment Tracker screenshot 1
Who Owes Me - Payment Tracker screenshot 2
Who Owes Me - Payment Tracker screenshot 3
Who Owes Me - Payment Tracker screenshot 4
Who Owes Me - Payment Tracker screenshot 5
Who Owes Me - Payment Tracker screenshot 6

Easily track money lent and borrowed, and split expenses with friends. This app helps you remember debts, manage payments, and provides an overview of your financial obligations. It offers features like cloud sync, currency support, and data export.

What We Love

  • 👍 Easy to use and intuitive
  • 🚀 Provides a good overview of debts
  • 💡 Helpful for tracking money owed
  • 🚀 Simple and straightforward

Room to Improve

  • 💰 Subscription or high one-time cost
  • 🔒 Limited functionality in free version
  • 🐛 Sync issues between devices
  • 🐛 Crashes and data loss
  • 💰 Expensive for the features offered
IOU-Marker#2

IOU-Marker by IOU Marker

Agreements, e‑sign, payments
Strong Contender
💼 Business
5.0(8 ratings)
FreeAds
IOU-Marker screenshot 1
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IOU-Marker screenshot 5
IOU-Marker screenshot 6

Create professional agreements and manage payments effortlessly. Draft documents using AI, e-sign, and track invoices and due dates in one organized platform. Secure sign-in ensures your data is protected.

More Iou apps to explore

FAQ about Iou

What are the best iou apps for iPhone?
Who Owes Me - Payment Tracker tops our iou apps ranking as of September 2026, with a 4.6-star average from 803 App Store ratings, and it's free to download.
Yes — 20 of the top iou apps we rank are free to download, including Who Owes Me - Payment Tracker and IOU-Marker.
Who Owes Me - Payment Tracker has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 246+ iou apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app helps you remember who you owe money to and who owes you money. It allows you to track debts, split expenses with friends, and maintain an overview of your financial transactions with contacts.
Key features include remembering debts, splitting expenses, cloud synchronization between devices, support for over 155 currencies, part payments, marking debts as paid, exporting data, generating PDFs, and sending reminders via SMS or email.

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