Simple Budget vs Sinkstack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Budget
This financial tool simplifies budgeting using the envelope system with digital enhancements. Manually track expenses, gain powerful insights into spending habits, and forecast future financial scenarios to grow your savings. Access your budget across devices with phone number sign-up.
- Envelope budgeting system
- Manual transaction entry
- Spending insights and analysis
- Budget calculator
- Cross-device access
- Transaction export
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Simple Budget is a hands-on budgeting app for people who want control over where their money goes. SEE WHERE YOUR MONEY GOES Break your spending down into categories, and give each category a budget. By planning your spending ahead of time, you can build savings directly into your budget, allowing you to have guilt-free spending money while still keeping up with your savings. Track your spending habits with Simple Budget to see if your spending matches your goals. HANDS-ON, WITHOUT THE HASSLE Stay close to your spending to see exactly where your money is going. Avoid the set-it-and-forget-it model and plan for every dollar. When you see each one coming in and out, you understand what you're spending and what you're saving. PLAN FOR THE FUTURE, LEARN FROM THE PAST • Plan your spending ahead of time, from retirement savings to weekend shopping. • Budget Calculator: see how your month ends up after the bills you know are coming, before you decide on that splurge. • Projected spending and savings for the current month. • Recurring income on any schedule: weekly, biweekly, monthly and more. • Year Savings: income, spending and savings for every month of the year. • Spending History: track your spending habits month to month. ENVELOPE BUDGETING, MADE EASY Building your budget is quick and easy with customizable, pre-built budget categories. Find what applies to you, tailor it to your needs, and build a budget that works for you. YOUR BUDGET, YOUR WAY • Track balances across your accounts, free. • Search, filter and sort every transaction, free. • Export your transactions to CSV anytime, free. • Sign in with your phone number and pick up your budget on any device, free. FREE AND PREMIUM Simple Budget is built for everyone, and stays affordable for anyone looking for extra budgeting firepower. The core of Simple Budget is free: budgets and categories, transactions, accounts, income, monthly insights and CSV export. Premium adds detailed category insights and trends, yearly insights, full Budget Calculator editing, history from previous years, and more. Simple Budget Premium is an auto-renewing subscription, billed monthly or annually. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Questions or ideas? luke@pgmediasolutions.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.gosimplebudget.com/privacy-policy
Sinkstack
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Payday Bridge projects a dated cash pool so you can see shortfalls before payday, even when the period ends with money left over. HOW IT WORKS 1. Open Payday Bridge from the dashboard. Enter an opening cash amount, desired buffer and 1–90 day horizon, or explore the labeled example. 2. Add dated income and payments. Mark uncertain income, then compare the entered baseline with uncertain income excluded or all paydays delayed by up to 14 days. 3. Inspect the lowest daily closing balance, same-day posting-order sensitivity and exact daily ledger. Save the plan and share its dates and assumptions. Envelope tracking, recurring schedules, Funding Calendar, paycheck allocation, catch-up planning, statements and existing scenario tools remain available. Saved plans preserve exact cents; failed writes keep the previous in-memory state and corrupt files are preserved. WHAT TO KNOW Manual USD planning for one cash pool, with up to 200 entries per plan and 50 saved plans. Amounts are stored as integer cents. Payments-before-income assumes all same-day outgoings precede incoming cash; actual posting order is unknown. Delayed income beyond the horizon is reported separately. No bank account is connected and no payments or envelope-balance changes occur. Include all obligations and avoid counting envelope transfers and their eventual bills twice. iPhone and iPad.
Screenshots
Verdict
The clearest difference is price: Simple Budget at Free against Sinkstack's $0.99. Simple Budget also leads on iOS requirement (15.6 vs 17.0). Sinkstack's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs every 3 months). On 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
Simple Budget is free to download; Sinkstack costs $0.99 up front. Simple Budget sells 2 in-app purchases, starting at $0.99 per month. Sinkstack asks for nothing beyond the download.
Simple Budget ships an update every 3 months, Sinkstack every 5 days. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.
| Parameter | Simple Budget | Sinkstack |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.5 (50 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 50 — better | — |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 59 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Luke Brady | Robert Corbin |
In-app purchases
Simple Budget
- Monthly Premium Subscription1 Month trial$0.991 Month
- Annual Premium Subscription$9.991 Year
Sinkstack
No in-app purchases









