Comparison

IOU Ledger vs Monoline

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IOU Ledger

Easily track personal loans and repayments with this simple ledger. Record money lent or borrowed, view balances for each contact, and manage multiple currencies. Data is stored privately in iCloud and syncs across your devices.

Highlights
  • Record money lent, borrowed, received, and repaid
  • View receivables, payables, and currency totals
  • Track individual contact balances and history
  • Edit or delete transactions with automatic recalculation
  • Support for multiple currencies
  • Data syncs via iCloud
Features
Read full description

Frequent money flows, but regular expense trackers are too complicated? "IOU Ledger" focuses purely on personal lending, borrowings, debts, and business receivables/payables—giving you the cleanest money tracking experience. 【Professional Management Features】 • Balance & Assets Dashboard: Instant overview of net assets, pending receivables, and outstanding debts. • Detailed Contact Ledgers: Separate statement for each person—track principal amounts, repayments, and history clearly. • Complete Loan Lifecycle: Full support for lending, borrowing, collections, and repayments. Easily edit or correct any entry. • Seamless Multi-Currency: Track international currencies effortlessly for overseas trips and cross-border debts. • Secure Private iCloud Sync: End-to-end encrypted in your personal iCloud. Seamless multi-device sync, zero risk of data loss. Clarify every debt and take control of your cash flow! Tap to purchase and experience effortless debt & loan tracking.

About

Monoline

Effortlessly track expenses with AI-powered automatic recording from card messages and Apple Pay. Simply write a line in natural language, and it intelligently categorizes your spending. Offers detailed reports and insights into your financial habits.

Highlights
  • AI automatic recording from card messages and Apple Pay
  • Natural language input for expense categorization
  • AI chat for spending analysis and insights
  • Monthly spending reports with personalized advice
  • Receipt scanning for item and amount recognition
  • Multi-currency support with automatic conversion
  • Separate ledgers for different purposes
Read full description

One line is all it takes. Write "lunch burrito 12" the way you'd text a friend, and Monoline fills in the amount, category, and place. No forms, no endless setup. • One-line entry — write naturally, it gets sorted • Several at once — "coffee 4.5, subway 2.75" becomes two entries • Voice — tap the mic and say it; fix the transcript right there • Receipts — snap one or several photos, items and totals are read for you • Shared ledgers — one invite link and your partner or family logs into the same ledger; see who added what • Day — one photo and one line about today, with an AI look-back at the end of the month • Ask AI — ask anything about your spending, answered from your own entries • Reports — monthly and yearly reports of tables and charts, built from your own entries • Foreign currency — write "¥1,200" and it converts at that day's rate, original kept in the memo • Separate ledgers — travel, emergency fund, each with its own currency; period ledgers for trips and events • Clean stats — spending by category and by month at a glance • iCloud Drive backup — restore after a new phone or a reinstall • No account needed — your entries live on your phone; sign in only when you share a ledger Start right away. No sign-up. Monoline Plus (optional subscription): unlimited ledgers and Apple Pay auto-record — payments logged through a Shortcut even when the app is closed. The free app keeps everything above, including AI chat, reports and shared ledgers, with 2 ledgers and a 10-entry auto-record trial. Monthly or yearly, cancel anytime in Settings. Questions: contact@plien.io Terms of Use: https://plien.io/spent/en/terms Privacy Policy: https://plien.io/spent/en/privacy

Screenshots

IOU Ledger4 screens
Monoline4 screens

Verdict

The call

The clearest difference is price: Monoline at Free against IOU Ledger's $0.99. Monoline also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (17.0 vs 26.2). IOU Ledger's advantage is in-app purchases (none vs 2). On review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Monoline is free to download; IOU Ledger costs $0.99 up front. Monoline sells 2 in-app purchases, starting at $1.99 per month. IOU Ledger asks for nothing beyond the download.

UpkeepUpdate frequency

IOU Ledger ships an update fortnightly, Monoline every 4 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard5 real differences · 3 level
IOU Ledger versus Monoline: the parameters behind the verdict, then further details
ParameterIOU LedgerMonoline
Price$0.99Free — better
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.217.0 — better
Further details — not scored
Size14 MB31 MB
Age rating4+4+
Developer伟贤 杨Plien (KR)

Customer experience

IOU Ledger

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Monoline

Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

IOU Ledger

No in-app purchases

2 purchases

Monoline

Subscriptions2
  • Monoline Plus$1.991 Month
  • Monoline Plus Yearly$12.991 Year

Questions

Is IOU Ledger free?
IOU Ledger costs $0.99, with no in-app purchases.
Is Monoline free?
Monoline is free to download, with in-app purchases available.
Do IOU Ledger or Monoline have ads?
Neither IOU Ledger nor Monoline shows ads.
Which is updated more often, IOU Ledger or Monoline?
IOU Ledger ships an update fortnightly, and Monoline every 4 days. Most recently, IOU Ledger was updated on October 28, 2026 and Monoline on October 29, 2026.

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