Comparison

What's Due vs Simple Checkbook.

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

Head to head
About

What's Due

Organize your income and bills to avoid late payments. This app provides reminders, projections, and quick actions to manage your finances efficiently. Sync across devices and secure your data with biometrics.

Highlights
  • Bill reminders
  • Income and bill tracking
  • Projected occurrences
  • iCloud sync
  • Quick actions for payments
  • Biometric security
  • Search functionality
Features
Read full description

Tired of using spreadsheets for tracking your bills? Or maybe you have all of your bills in a to-do app that's not designed for bill tracking... Do you sometimes forget that a bill is due until it's already overdue? That's where What's Due comes in! Never forget about your upcoming bills again with this easy-to-use app. Some of the top features: - Projected Occurrences: Show the next occurrence only... Or turn on the 'Include Projections' filter to include projections up to a year out. - Income & Bills: Add all your income and bills to track everything in one place. - Calendar: See your month at a glance — a month grid marking the days income and bills are due, with each day's list one tap away. - Charts (premium): Visualize your bills and income with category, account, and trend charts — including your on-time payment rate and year-over-year comparisons. - Search: Quickly find any income or bill with the dedicated Search tab. - Widgets (premium): Add widgets to your Home Screen to see and update your bills without opening the app. - Unlimited Bills (premium): Track all your bills (premium feature) or up to 5 upcoming bills at a time without upgrading. - Bill Reminders: Never forget to pay a bill with bill reminder notifications. - iCloud Sync: Automatically syncs with your iCloud, so you can start on your iPhone and continue on your iPad, Mac, or Apple Vision Pro. - Quick Actions: Swipe right to mark as paid or scheduled (paid, but hasn't cleared your bank yet) and left to delete an income/bill. Long pressing a bill with a 'Bill Pay URL' added will allow you to quickly pay online. - Import/Export CSV (premium): Import your bills from a CSV file. Or export them to save outside the app. - Biometrics: Hide your bills from prying eyes by locking them behind biometrics. - Alternate App Icons: Personalize your app with alternate icon options. - Accent Colors (premium): Set your favorite accent color to be used throughout the app. - Multilingual: Use What's Due in English, Spanish (español), French (français), Italian (italiano), Portuguese (português), or German (Deutsch). With an upgrade to Premium, you get: - Widgets - Charts - Unlimited Income/Bills - Import/Export CSV - Accent Colors Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Simple Checkbook.

Manage your personal finances with this straightforward checkbook application. Track multiple accounts, log detailed transactions, and visualize your spending habits with insightful charts. Sync your data seamlessly across devices via iCloud.

Highlights
  • Multiple account management
  • Detailed transaction logging
  • Transaction clearing status
  • Balance tracking
  • Transaction filtering
  • Expense/income charts
  • iCloud sync
Features
Currently charting
Read full description

A simple checkbook to help organize your finances. Features: - Keep track of any number of accounts. - For each transaction, track the date, name, type, amount, check number, category, and notes. - Mark transactions as cleared. - Displays cleared, outstanding, and current balance. - Ability to filter transactions displayed. - Display charts for expenses or income by category. - Syncs to iCloud

Screenshots

What's Due4 screens
Simple Checkbook.4 screens

Verdict

The call

The clearest difference is price: What's Due at Free against Simple Checkbook.'s $3.99. What's Due also leads on rating (4.8 vs 3.7) and review sentiment (81% vs 50%). Simple Checkbook.'s advantage is in-app purchases (none vs 3) and chart position (#134 vs unranked). On update cadence and ads 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

What's Due is free to download; Simple Checkbook. costs $3.99 up front. What's Due sells 3 in-app purchases, starting at $4.99 per month. Simple Checkbook. asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

What's Due holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: What's Due has 318 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 81% of What's Due's written reviews are positive against 50% of Simple Checkbook.'s.

UpkeepUpdate frequency

What's Due ships an update every 3 weeks, Simple Checkbook. every 2 weeks. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

Scorecard9 real differences · 2 level
What's Due versus Simple Checkbook.: the parameters behind the verdict, then further details
ParameterWhat's DueSimple Checkbook.
PriceFree — better$3.99
Rating4.8 (318 ratings) — better3.7 (3 ratings)
Positive reviews80.8% of reviews — better50.0% of reviews
Number of ratings318 — better3
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
Best chart rank—#134 — better
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone, iPad
Requires iOS26.018.0 — better
Further details — not scored
Size49 MB3 MB
Age rating4+4+
DeveloperSemper Phoenix LLCMatthew Hiles

Customer experience

What's Due

All ratings318 ratings
Positive96.9%
Neutral2.2%
Negative0.9%
Written reviews26 reviews
Positive80.8%
Neutral3.8%
Negative15.4%

Simple Checkbook.

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

What's Due

Reported bugs

3 issues
  • Data randomly disappears and reappears
  • Auto pay doesn't auto pay bills
  • No notifications or reminders

Requested features

11 requests
  • Add user to bills
  • Calendar view
  • One-time payment option
  • Dark mode
  • Add current savings option
Show 6 more
  • Auto-pay for bills and income
  • +/- for whole month
  • Visual graph of monthly/annual data
  • Counter on app icon
  • Total $ by month
  • Add payday

Simple Checkbook.

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

What's Due

Subscriptions2
  • Premium (Monthly)$4.991 Month
  • Premium (Annual)$19.991 Year
One-time1
  • Lifetime Premium$59.99
None

Simple Checkbook.

No in-app purchases

Questions

Is What's Due free?
What's Due is free to download, with in-app purchases available.
Is Simple Checkbook. free?
Simple Checkbook. costs $3.99, with no in-app purchases.
Which has better reviews, What's Due or Simple Checkbook.?
What's Due is rated higher. What's Due averages 4.8 out of 5 from 318 ratings, while Simple Checkbook. averages 3.7 from 3 ratings.
Do What's Due or Simple Checkbook. have ads?
Neither What's Due nor Simple Checkbook. shows ads.
Which is updated more often, What's Due or Simple Checkbook.?
What's Due ships an update every 3 weeks, and Simple Checkbook. every 2 weeks. Most recently, What's Due was updated on September 25, 2026 and Simple Checkbook. on September 24, 2026.

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