App Overview

Duesday – Subscription Tracker icon

Duesday – Subscription Tracker

Richard Rogers · Finance

Duesday is a subscription tracker that keeps your total monthly spend one glance away — on your Home Screen, your Lock Screen, and at the top of the app — and catches every renewal before it charges, not after.

$9.99

PRICE
$9.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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A product spec, phased build plan, differentiation notes, and screen references.

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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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App evidence

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App Store description

Duesday is a subscription tracker that keeps your total monthly spend one glance away — on your Home Screen, your Lock Screen, and at the top of the app — and catches every renewal before it charges, not after. Open it and you get the full picture: every subscription sorted by renewal date, what's charging this week, and how your spending has changed since last month. On iPad, the list and your insights share the screen side by side. WIDGETS THAT DO THE NAGGING Home Screen and Lock Screen widgets show the monthly total, what's charging next, and where the money goes — in whichever accent color you've picked. RENEWAL REMINDERS THAT ARRIVE IN TIME Monthly plans get three days' warning, yearly plans get two weeks — both adjustable per subscription. If the service has a known cancellation page, the reminder takes you straight there. CATCH FREE TRIALS BEFORE THEY CONVERT Mark anything as a trial and Duesday warns you three days before it becomes a paid plan, then again the day before. The most expensive subscription is the one you forgot you started. ADD A SUBSCRIPTION IN ABOUT 10 SECONDS Type a few letters and pick from 215 built-in services — Netflix, Spotify, iCloud+, Adobe, YouTube Premium, Disney+, gyms, meal kits, and more — each with plan tiers and typical prices pre-filled, and editable, because your price is the one that counts. Or browse the whole catalog by category. Anything unusual goes in through the custom form. SEE WHERE THE MONEY GOES A spend-by-category chart, a 12-month history, and a lifetime tally per service that answers the uncomfortable question: how much have I actually paid Netflix since 2023? And The Year Ahead shows what the next 12 months will cost at today's lineup — and how your recent additions and cancellations changed it. SYNC THROUGH YOUR OWN ICLOUD Optional, and off by default. Turn it on and your iPhone, iPad and Mac stay in step — add a subscription on your phone and it's everywhere in seconds. Everything goes through your own iCloud account, never through us. ALSO ON YOUR MAC One purchase covers all three. On the Mac, Duesday lives in the menu bar — your total right next to the clock. MAKE IT YOURS Twelve accent colors, one tap away in Settings. The whole app restyles instantly, widgets included. SPLITTING A FAMILY PLAN? Track just your share. The totals stay honest. THE SMALL STUFF DONE RIGHT Ask Siri what's due this week, export renewals to your calendar, search your notes and payment methods, snooze a reminder by a day. Full VoiceOver support. PRIVATE BY DESIGN No account. No bank login. No tracking. Your data lives on your devices — and in your own iCloud if you turn sync on. The only other network request is an anonymous refresh of the built-in price list, which you can switch off. Export everything to CSV or JSON whenever you want. If you've been looking for a subscription manager that doesn't want your bank credentials, doesn't need an account, and isn't itself a subscription — this is it. Duesday is a one-time purchase, native Swift on every platform. Requires iOS 17 or later; the Mac app needs macOS 14.

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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BUILD KIT DIFFICULTY

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A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.