See How Many Days of Stock Cover You Actually Hold
A full warehouse can still hide a product that runs out this week. Divide stock on hand by its own daily usage and compare each product’s cover with the lead time to replace it.
1 · product | units on hand | average units sold per day
FIRST-LOAD
Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Data note: Everything runs in this browser tab on the stock cover hourglass: your product | units on hand | average units sold per day stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: Fast and slow movers hide each other in one total. After: the stock cover hourglass shows the working beside each named row so the reader can change the assumption and inspect the consequence.
2 · Read the stock cover hourglass
Inventory arithmetic on figures you enter, not demand forecasting, accounting or a stock system. Verify counts and lead times against your own records.
Paid layer: stock cover hourglass print and history
one-time step · the free reading above stays complete
Free tier
- one complete stock cover hourglass run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link
What $4 one-time adds
- print the stock cover hourglass with its row workings
- CSV of days of cover and row explanations
- last five reading summaries saved in this browser profile
$4 once for repeated filing of the stock cover hourglass, not for a better answer. Illustrative time basis: avoiding one five-minute manual reformat per saved reading; no market-price or guaranteed-savings claim.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable until a payment link is configured. The optional unlock is browser-local, profile-scoped and best-effort, not server-verified access. Clearing browser data can remove it; there is no account or cross-device recovery.
Boundary and sources
Inventory arithmetic on figures you enter, not demand forecasting, accounting or a stock system. Verify counts and lead times against your own records.
- Method: The summary reports the tightest product because that is where stock-out happens first. Widget B has 3.75 days of cover against a seven-day lead — flagged, and already unfixable without expedite.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-28, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Mechanism: competence-autonomy-loop
Optional AI formatting, not calculation
For this stock cover hourglass, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a stock cover hourglass. Return plain rows only: product | units on hand | average units sold per day. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: product | units on hand | average units sold per day. No AI response is executed as code.