# Sinkstack: Paycheck Budget — See the gap before payday

> See the gap before payday (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/sinkstack-paycheck-budget/id6776308197 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Finance, Utilities
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-06-08
- Data updated: 2026-10-12

## What is Sinkstack?

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.

## Is Sinkstack safe?

Not enough ratings yet to assess Sinkstack.

## Is Sinkstack legit?

Sinkstack: Paycheck Budget appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sinkstack is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 3.0.1 — 2026-09-30

A clearer App Store name and search details. No other changes in this update.

### 3.0 — 2026-09-14

Payday Bridge

Payday Bridge projects a dated cash pool so you can see shortfalls before payday, even when the period ends with money left over.

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.

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.

### 2.3.1 — 2026-06-26

This update sharpens the interface: the iPad layout now uses a centered, comfortable reading width instead of stretching edge to edge, plus small display fixes. iPhone is unchanged.

### 2.3 — 2026-06-21

Sinkstack 2.3 — a pro upgrade for your sinking funds, still 100% offline.

• Paycheck Allocator: split an incoming amount across every envelope by proportional, priority-waterfall, or even strategy — to the exact cent, never creating or losing a penny.
• Two-way What-If Solver: "reach my goal by this date → here's the monthly," or "at this rate → here's the finish date."
• Catch-Up Plans for any envelope that's fallen behind, spread over the periods you choose.
• Recurring bills that auto-reset: annual, semiannual, quarterly, or monthly funds roll over on their own.
• Insights roll-up: total monthly set-aside, 30/60/90-day cash needs, over/underfund counts with one-tap reclaim, and a monthly-net chart.
• Export a PDF statement.

No account, no bank links, no cloud — every number stays on your device.

### 2.2 — 2026-06-20

Introducing the This Month planner — see exactly how much to set aside this month, which funds are on pace, and which are behind, with a one-tap catch-up. Plus per-year breakdowns, a busiest-month view, and a full accessibility pass with Dynamic Type and VoiceOver.

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## More apps by Robert Corbin

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- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF: Expense Report](https://appshunter.io/ios/app/receipt-to-pdf-expense-report/id6761782025)
- [Route Your Pay: Mileage Log](https://appshunter.io/ios/app/route-your-pay-mileage-log/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-12.*