The cheapest numerology API at volume

What a request costs

Plan	Requests / month	Monthly	Cost per 1,000 requests
Free	100	$0, no card	$0
Starter	10,000	$9	$0.90
Pro	500,000	$49	$0.098
Overage (opt-in, paid plans)	up to 50,000 / 2,500,000 extra	billed in arrears	$0.10

Annual billing is $90 for Starter and $490 for Pro, which is two months free and brings Pro down to about $0.082 per 1,000.

Get a free key or see every plan on the home page.

One price for every endpoint

Some APIs charge credits that vary by endpoint, so a full report can cost many times a single number. Here, one request is one request:

• A full 47-field Pythagorean chart from POST /v1/charts/pythagorean costs one request.
• Personal year, month and day cycles from POST /v1/cycles cost one request.
• Compatibility between two people from POST /v1/compatibility costs one request.
• A batch costs one request per chart, with no surcharge.

Life path, destiny, soul urge, karmic debts, pinnacles and the rest come back together in the chart, so you never pay per field.

What real workloads cost

Workload	Requests / month	Plan	Monthly cost
Trying the API or a hobby project	up to 100	Free	$0
A blog calculator with a few hundred visitors a day	about 10,000	Starter	$9
A mobile app charting 1,000 sign-ups a day	about 30,000	Starter + 20,000 overage	$11
Daily personal-year cycles for 15,000 active users	about 450,000	Pro	$49
Backfilling 500,000 existing users	500,000	Pro	$49

How to compare numerology API prices

Headline prices hide the real cost. Compare these four numbers:

1. Cost per 1,000 requests on the plan you would actually buy: divide the monthly price by the included requests, then multiply by 1,000.
2. What one request buys. Is it one number or a whole chart? Do some endpoints cost more credits than others?
3. The overage rate, and whether there is overage at all. Many APIs simply stop with 429 at the quota until next month.
4. What the free tier includes: every endpoint, or a cut-down version? Does it need a card, and does it expire?

Prices change, so check each provider’s current pricing page before deciding. Ours is generated from the same code that enforces it, and GET /v1/plans returns it as JSON.

Frequently asked questions

What is the cheapest numerology API?

At volume, Simple Numerology API: among the numerology APIs we compared in October 2026, its Pro plan had the lowest price per request, 500,000 requests for $49 a month, or $0.098 per 1,000. Overage is $0.10 per 1,000.

What is the cheapest paid plan?

Starter, at $9 a month for 10,000 requests, or $90 a year.

Is there a free numerology API?

Yes. The free plan includes 100 requests a month on every endpoint, with no credit card and no expiry.

Do some endpoints cost more than others?

No. Charts, cycles and compatibility each cost one request, and a batch costs one request per chart.

What happens if I go over my plan?

By default the API returns 402 and nothing is billed. On a paid plan you can turn on overage, which keeps serving requests at $0.10 per 1,000 up to a monthly cap.

Are there setup fees or minimum commitments?

No. Plans are monthly or annual, you can cancel any time from the dashboard, and cancelling returns you to the free plan instead of revoking your keys.