Signal · Cost

Zombie subscriptions

Recurring supplier subscriptions that are rising, duplicated, or long-unchanged — quiet savings sit here.

Cost

What the signal measures

Recurring supplier subscriptions that are rising, duplicated, or long-unchanged — quiet savings sit here.

Why it matters

Recurring supplier subscriptions accumulate silently — a tool signed up for a trial in 2023, an analytics platform whose seat count crept up, two identical-looking subscriptions to the same vendor under different contact names. Individually they are rounding errors; collectively they can be 5-10% of your overheads. This signal identifies the three patterns — rising, duplicate, and long-unchanged.

How to act on it

The drafted action is a review checklist per supplier: what is this for, who uses it, is the plan right-sized, is there a duplicate? Compass does not suggest cancelling anything — the human always decides whether the £30/month spend still earns its keep.

Worked example — fixture consultancy

On the fixture, Flowstate Analytics (s-flow) rises every month across the window from £300 to £750 — a classic scale-creep zombie. CloudHost Ltd and CloudHost Limited (near-identical names, different supplier IDs) look like a duplicate bill. Compass surfaces both patterns with the underlying bill sequence so the human can decide.

Deterministic maths, AI writes the words.

Every number in this signal is computed by unit-tested TypeScript in src/signals/zombieSubscriptions.ts. The AI drafts only the wording of the suggested action, never a figure.