One active request: the subscription dev constraint nobody argues with

Subscription development services sell on the word unlimited. Unlimited requests, unlimited brands, unlimited revisions. The part that actually makes the model work is the opposite word: one. One active request on the board at a time.

The economics are simple once you see them. A senior engineer costs more than most founders expect once you load benefits and taxes, which is why an agency quote for a full-time-equivalent build starts around a quarter million a year. Unlimited-request subscriptions sit far below that because the queue is the throttle. You can stack fifty cards in Trello, but delivery happens one card at a time, and that single constraint is what keeps the flat fee flat.

For the buyer, the one-at-a-time rule changes how you should write tickets. When everything is urgent, the queue becomes a lottery. When the board has one active slot, you are forced to order work by what ships value first, and the substance of each request goes up. Teams that thrive on this model write smaller, sharper cards: one endpoint, one scraper, one migration. Delivered, reviewed, next.

The comparison people miss is context switching. A developer juggling six clients' simultaneous emergencies loses meaningful time per switch, and you pay for that tax whether or not it appears on an invoice. A serial queue eliminates it: full focus on your card, then the next one. Turnaround claims like 72 hours are credible precisely because nothing else is competing for the same hours.

Unlimited is the marketing. One is the mechanism. Pick services that are honest about both.

Pricing and the full workflow: https://www.poketdev.com/