Pay per call. No subscription.

Every tool has one price per successful call. Calls with invalid input are free. 100 calls per day are free without a key.

Nested cup weights1652–1698

No keyFree100 calls per day per client

CreditCHF 55,000 calls at CHF 0.001

CreditCHF 2020,000 calls at CHF 0.001

CreditCHF 5050,000 calls at CHF 0.001

Larger credit: CHF 200. Credit is prepaid through Stripe (card, TWINT) and does not expire. See the terms.

Price per tool

Tool	Group	CHF / call	Calls per CHF 20
Business days between two dates	Dates and deadlines	0.002	10,000
Deadline in business days	Dates and deadlines	0.002	10,000
Is this a business day?	Dates and deadlines	0.001	20,000
Public holidays for a year	Dates and deadlines	0.002	10,000
Exact calculator	Exact maths and money	0.001	20,000
Unit conversion	Exact maths and money	0.001	20,000
Currency conversion at ECB reference rates	Exact maths and money	0.002	10,000
Loan, savings and investment maths	Exact maths and money	0.003	6,666
Repair JSON and match it to a schema	JSON	0.002	10,000
Validate JSON against a schema	JSON	0.001	20,000
Convert documents to Markdown or JSON	Files	0.01	2,000
Synthetic test records	Test data	0.005	4,000
Test records for your JSON Schema	Test data	0.005	4,000
Validate business identifiers	Identifiers and Swiss QR-bills	0.001	20,000
Swiss QR-bill code	Identifiers and Swiss QR-bills	0.01	2,000
Check a Swiss QR-bill payload	Identifiers and Swiss QR-bills	0.002	10,000
Explain a cron schedule and list its next runs	Time	0.001	20,000
Convert a time between time zones	Time	0.001	20,000
ISO week numbers	Time	0.001	20,000
CEFR level of a text	Language level	0.04	500
Rewrite a text for a CEFR level	Language level	0.15	133
Sudoku: generate, solve, grade	Puzzles and everyday	0.002	10,000
Word search generator	Puzzles and everyday	0.002	10,000
Everyday calculators (30)	Puzzles and everyday	0.001	20,000