For most small businesses, connecting two apps you already use — a scheduler and a CRM, a form and an invoicing tool — runs $2,500 to $6,000 as a one-time build, plus nothing extra to run it unless something breaks. A messier case, where the data on each side doesn’t agree with itself, gets scoped first for $400 so the number you get back is real.
Why most quotes just say “it depends”
Ask around and you’ll get a shrug and a request for a call. That’s not evasion, usually — the honest cost genuinely depends on a few things. But “it depends” without a range is a stall tactic dressed up as caution, and it trains buyers to distrust the whole page. Here’s what the number actually depends on, and what it looks like on each end.
The real range
| Situation | What it costs | Why |
|---|---|---|
| Two apps, both with a clean API, one clear direction of data flow | $2,500–$3,500 | The floor for any build — small jobs stay small |
| Two-way sync, or a field that means something different in each system | $3,500–$6,000 | The extra cost is reconciling meaning, not moving data |
| You’re not sure what’s actually wrong, or there are more than two systems involved | $400 first, applied to the build if you go ahead | Paying to find out beats guessing and building the wrong thing |
| Ongoing maintenance once it’s live | from $500/month | Bugs fixed free; a set amount of build time each month for anything new |
These are the same numbers on the pricing page — if the two ever disagree, that page is wrong and this one should be trusted less until it’s fixed.
Why it isn’t a flat “connect two apps” price
Two numbers move the estimate more than anything else:
- Does the data mean the same thing on both sides? A “customer” in a CRM and a “customer” in a scheduler often aren’t the same record — one has duplicates, one has a required field the other doesn’t collect. Reconciling that is the actual work; moving bytes between two APIs rarely is.
- Does it need to run both ways? A one-way sync (scheduler → CRM) fails safely: if it breaks, nothing updates and you notice. A two-way sync can create a loop or overwrite a correction, so it needs guardrails a one-way sync doesn’t.
What buying it off the shelf costs instead
Off-the-shelf integration platforms charge by the task or by the connected app, and the published rate is worth comparing against a custom build even if you end up going custom: Zapier’s paid plans start near $20/month for a small number of monthly tasks and scale from there as volume grows (Zapier pricing, checked August 2026). For a business running a handful of workflows a month, that’s cheaper up front than a custom build — and it’s the right call if the two systems already have clean, well-documented APIs and the logic is genuinely simple. It stops being the right call once you need logic those platforms don’t support, or once the per-task cost climbs past what a one-time build would have cost over a year or two.
When you don’t need this at all
If the “connection” is really just someone re-typing the same five fields into a second system a couple of times a week, the fix might be deleting one of the systems, not connecting them. That conversation is free — it’s what the discovery call is for.
Book the free call if you want a straight answer on which side of this your situation falls on.