Can I code this? A Customer Satisfaction (NPS) Survey Tool
A one-question rating scale with an optional follow-up comment is about as simple as a survey gets — genuinely one of the more approachable ideas here.
Build it
Effort: an eveningRunning cost: $0/mo to start
Why CanICodeThis says Build it
A single rating-scale question (0-10) with an optional text follow-up is a minimal, well-bounded form
Storing and aggregating responses into a score over time is ordinary CRUD and charting
Emailing the survey link after a purchase or support interaction is one transactional-email call
The parts that'll cause problems
Segmenting responses by customer attributes (plan tier, signup date) needs real data modeling beyond raw scores
Automatically triggering the survey at the right moment (after a specific event) needs integration with wherever that event happens
Trend analysis and cohort comparison over time is a real, separate reporting feature
How I'd build this
frontend
Astro or Next.js
database
Turso (SQLite)
email
Resend
hosting
Cloudflare Pages
MVP scope
A single 0-10 rating question with an optional comment
Emailed survey link after a trigger event
A dashboard showing score over time
Postpone to v2
Segmentation by customer attributes
Automatic triggering tied to product events
Cohort trend comparison
What it actually costs to build
AI agent — with a subscription (Claude Pro/Max, Cursor, etc.)
$0 marginal
AI agent — pay-per-use API, no subscription
$16–$27 one-time
Hosting, once it's running
$0/mo (free tier)
Domain name, if you want your own
~$12/yr
Existing tools solving a similar problem typically run $29–$79/mo — see how they compare below.
The build prompt
Genuinely one of the simpler builds in this library:
1. A single 0-10 rating question with an optional comment field — one page, one form.
2. An emailed survey link sent after a trigger event (a purchase, a support interaction closing) via a transactional email API.
3. Store responses and show a dashboard with the score trend over time.
That's a real, complete NPS survey tool. Out of scope: segmentation by customer attributes, which needs those attributes captured and joined against responses, real additional data modeling, and automatic triggering tied to product events (rather than a manual send), which needs your product to emit those events in the first place.