Trial users pay nothing, so every paying user carries their cost.
Margins
Paying yearly and through Apple: the same mix as the Earmark user.
Where people buy, and what we keep
What each allowance costs
An Earmark+ user at their Summary/Full mix and lengths above, making this much audio. The 70% line is the target margin (spec section 11).
What a Taster user costs
Typical Taster user–
Worst case–
To win each paying user–
How the size limit per item moves the worst case (the whole free pool spent on Summaries of the longest item allowed, no cache):
The fundamentals
Users this month
From the cost log, keyed by user id, so deleted items still count. Paying users are credited with what we keep per Earmark user above, less their share of the overheads. Projected is the whole month at their last-30-day pace. Click a user for every call on Costs.
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Estimates. Voice prices come from the price list in the database (Model Center); check them on the providers' own pages before setting prices. Fees per payment and fixed overheads come from the Overheads page, which says how current each one is. Apple takes its fee after VAT; Stripe's is its UK card rate plus Stripe Billing. Minutes of older audio are estimated from its characters; new audio records its real length.