Privacy policy
Calculations run in your browser. AskCalculators has no application server, account system, hosted calculator database or automatic cross-device synchronization. It does use a browser-local database.
What is stored on this device
The askcalculators IndexedDB database stores projects, drafts, successful calculation history, scenarios, snapshots, reports and settings. Some drafts are also cached in session storage. Local storage holds the theme, history and retention preferences, a recent-project reference and the optional Legacy/Data grid view preference. Local counters record event names, counts, dates and calculator/workflow identifiers, not entered values, result values or project names. They are not transmitted as site-wide analytics.
The optional workflow Data grid opens our own calculator page in a same-origin side panel. The frame and parent exchange a per-open identifier and bounded save/readiness status, not calculation values. Both views read the same browser-local project records; a grid save does not create a hosted project or a new account.
Your choices and retention
Data and privacy lets you inspect counts, export or import a backup, select 7, 30 or 90 days of automatic history retention, turn off automatic history, and delete history or all site data. Expiry is applied when the application runs; it is not a background deletion service. Disabling history alone does not disable drafts. Intentional projects, saved scenarios, workflow evidence and reports remain until you delete them.
The “Do not save this session” switch on a calculator pauses newly initiated drafts, history, local counters, scenario saves, workflow-step saves and automatic URL updates for this tab. It stores only that preference in session storage. It does not erase records already saved or a write already submitted to the browser, and it is not an incognito browser. Explicit exports and copied links remain available. The preference may not survive navigation when browser storage is denied.
Links are not secret storage
Portable links can put inputs in URL query parameters. Requested URLs may reach hosting logs, browser history, bookmarks, messages and previews. The fragment-link option keeps state after #, which is not normally sent in an HTTP request, but page scripts and recipients can read it. Neither format is encrypted, access-controlled or revocable. No personalized social-preview server exists. Do not share financial, health or identifying values unintentionally.
Backups, reports and deletion
Workflow PDFs include a locally generated QR. By default it opens only the workflow page. Selecting “This saved workflow” deliberately embeds the project name, saved inputs and results, formula versions, saved times, capture time and template in a compressed URL fragment. This also includes inputs omitted visually by the Summary template. Anyone with the link or PDF can read that snapshot. It is not encrypted, authenticated, live or revocable. Receiving it previews the data without automatically saving a project; an explicit action saves a separate local copy. No third-party QR service or short-link database receives the data. Large snapshots require a project file instead.
PDF, CSV, JSON and project files are generated locally. Files can contain sensitive values. Deletion on this site affects this browser's application data, not copies in Downloads, another browser/device, shared messages, hosting logs or backups. Clearing automatic history removes its automatic snapshot copies; deliberately saved workflow evidence and reports are separate. Browser eviction, a cleared profile or device loss can remove local data. Export important work and store it safely.
Hosting and outside services
Your hosting/security provider can receive normal request metadata such as IP address, URL, user agent, time and security signals. Browser-local does not mean invisible to scripts running on the same origin. This release includes no advertising, analytics beacon, embedded payment SDK or hosted AI script. When checkout is enabled, an ordinary link opens a Stripe-hosted payment page; no Stripe script executes in the calculator workspace. Optional commercial links are ordinary disclosed external links, not embedded trackers. When an enabled link takes you to a payment provider, affiliate destination or sponsor, that provider's terms and privacy policy apply; calculator values are not attached by this application.
The application does not set cookies. A hosting/security provider may process technical data separately. Before enabling any new provider, the operator must verify its data flow, applicable consent requirements and this policy. Checkout stays disabled until a real Stripe Payment Link, seller details and approved terms are configured. Stripe collects purchaser and payment information on its own hosted page. The seller uses the purchase email and payment record to verify payment, deliver the files and handle support/refunds. These records are separate from calculator inputs. A return-page visit is not payment verification.
Construction Planning Pack
The downloadable pack runs locally without browser storage, telemetry or network requests. Unsaved project data exists in page memory; .acplan, CSV and printed PDF files are created only when you export them. It does not open the website's IndexedDB database or upload client information. Closing the page loses unsaved changes. Downloaded files and manually emailed order records have separate retention and deletion responsibilities.
Stripe purchase information
Payment details are entered on Stripe, not in this static website. Purchase email, payment status and applicable billing information are available to the seller for fulfillment and support. Do not include calculator inputs in a checkout link, payment reference or support message. Stripe and hosting providers process technical request data under their own policies. The seller must determine applicable retention, tax and privacy obligations for the actual business.
Contact and corrections
Use the contact page for privacy or correction requests. Do not send private calculator inputs unless necessary and explicitly agreed. This disclosure describes the application; it does not certify legal compliance of an unknown hosting configuration.