What's Due vs Simple Checkbook.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Bill reminders
- Income and bill tracking
- Projected occurrences
- iCloud sync
- Quick actions for payments
- Biometric security
- Search functionality
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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/
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.
- Multiple account management
- Detailed transaction logging
- Transaction clearing status
- Balance tracking
- Transaction filtering
- Expense/income charts
- iCloud sync
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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
Verdict
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
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.
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.
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.
| Parameter | What's Due | Simple Checkbook. |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.8 (318 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 80.8% of reviews — better | 50.0% of reviews |
| Number of ratings | 318 — better | 3 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Best chart rank | — | #134 — better |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Semper Phoenix LLC | Matthew Hiles |
Customer experience
What's Due
Simple Checkbook.
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
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- 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
What's Due
- Premium (Monthly)$4.991 Month
- Premium (Annual)$19.991 Year
- Lifetime Premium$59.99
Simple Checkbook.
No in-app purchases
Questions
Is What's Due free?
Is Simple Checkbook. free?
Which has better reviews, What's Due or Simple Checkbook.?
Do What's Due or Simple Checkbook. have ads?
Which is updated more often, What's Due or Simple Checkbook.?
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