Why: the goal or problem

Hints are spent one at a time. A permanent unlock cannot express a balance that decreases and can be replenished.

How: work toward a solution

A fictional puzzle app starts with zero hints. Buy three, then use hints repeatedly: the balance falls to zero and further use is blocked. Buying another pack adds three again. This is a local simulation; no purchase is processed. Prices, taxes, fees and refunds are omitted. Reset or reload clears the example.

Purchased units decrease when used.

Illustrative example

Consumable purchase

Puzzle app · No purchased items initially

Hints

0

Purchases: 0

Uses completed: 0

Each hint use deducts one. At zero, use is blocked; another purchase adds three.

No real purchase. Prices, taxes, fees and refunds omitted.

A fictional demo within this article. Reset or reload restores its initial state.

What: the concept

A consumable purchase supplies units that are depleted through use and can be bought again. It differs from a non-consumable feature entitlement.

Combine with free access while making balance and spending clear.

Source