No signup · local proof · evidence backed
Six more real apps, not six more empty landing pages.
These are narrow browser-local decision tools promoted from high-scoring operational opportunities. Each runs before payment, cites its authority boundary, and inherits the portfolio commercial ladder: $0 free proof → $5 first paid proof → $50 diagnostic → $99 action pack.
Companies House · ACSP · evidence retention
IDEA-2947ACSP 7-Year Identity Evidence Retention Date Calculator
Calculate a seven-year retention date from an identity-verification completion date and create a browser-local evidence reminder without uploading client data.
Run free appHMRC · CIS · monthly close
IDEA-2927CIS Nil Return vs Inactivity Decision Gate
Run a browser-local monthly control for a CIS period and distinguish a normal return, a nil return path and a temporary inactivity path before filing.
Run free appHMRC · Plastic Packaging Tax · mass balance
IDEA-3120Plastic Packaging Tax Mass-Balance Running-Ledger Checker
Paste opening balance and dated attribution movements to test whether a three-month mass-balance working ledger ever drops below zero, entirely in the browser.
Run free appCompanies House · director · PSC
IDEA-2952Companies House Director + PSC Dual-Role Action Reconciler
Separate director and PSC identity-verification actions for one person so a team does not mistake one role submission for completion of the other.
Run free appOfgem · heat networks · registration
IDEA-2987Heat Network Registration Role & Evidence Readiness Gate
Run a bounded readiness check for heat-network scope review, operator/supplier mapping, regulatory contact ownership and registration evidence before Ofgem submission.
Run free appGitHub Copilot · seat billing · FinOps
IDEA-3068GitHub Copilot Upfront Seat Billing Exposure Calculator
Estimate next-cycle upfront seat exposure using your own assigned-seat count and unit price, with a separate planned-removal scenario and no GitHub account access.
Run free app