ARPU has the advantage of fitting in one division and the drawback of every average: it describes a customer who does not exist. Used well it reveals a trend. Used badly it hides exactly the information you need.
Definition
ARPU, average revenue per user, is total revenue for a period divided by the number of users over that same period.
Two calculation choices decide its reliability:
- Which users. All of them, or only paying ones? Both figures are legitimate but tell opposite stories, especially under Freemium.
- Which period. Comparing a monthly ARPU to an annual one is meaningless, and the mistake is common.
What the average flattens
Picture two businesses reporting the same €50 ARPU. The first has a hundred customers all paying €50. The second has ninety-five paying €10 and five paying €810.
These are radically different companies. The second loses half its revenue if two customers leave, which no ARPU will flag. That is the metric's fundamental limit.
The useful reflex is to read the median alongside the mean. If they diverge sharply, your revenue is concentrated on a few customers, and that is a risk to handle before anything else.
What it is actually for
| Question | Does ARPU answer it? |
|---|---|
| Is my customer base moving upmarket? | Yes, through its trend |
| Are my price increases landing? | Yes, alongside customer count |
| Who are my good customers? | No, it dilutes them |
| Can I raise my CAC (customer acquisition cost)? | Partly, LTV (customer lifetime value) is more accurate |
ARPU's best use is comparative over time on a constant scope. Its absolute value says almost nothing.
Three ways to raise it
They are not equivalent, and the order you try them in matters a great deal.
Raise prices
The effect is immediate and the effort is nil, which makes it the first lever to examine. The risk is measurable: track customer count for the three months after, not just revenue. Price positioning covers how to do it without breaking the existing base.
Sell more to the same customer
This is the territory of Upsell and add-ons. The advantage is that CAC (customer acquisition cost) is already paid: every extra euro arrives with no acquisition cost, so at maximum Gross margin.
Change who you sell to
Targeting a segment that pays more raises ARPU mechanically, but that is a change of Niche market, not a setting. Do not attempt it to fix a metric, only if the new segment is genuinely better served by your product.
Frequently asked questions
ARPU or LTV?
ARPU measures a period, LTV (customer lifetime value) measures a whole lifetime. To decide how much you can spend on acquisition you need LTV, because it factors in how long the customer stays.
Should free users count?
Track both versions separately. ARPU on paying users measures your Price positioning. ARPU across everyone measures how well your freemium model works. Mixing them measures nothing.
Is a falling ARPU a bad sign?
Not necessarily. It falls mechanically when you open an entry-level tier, which can be an excellent decision. Read total revenue and customer count at the same time, never ARPU alone.