Build vs. Buy: When gym owners should vibe-code their own AI tool vs. pay for one
Last checked 2026-10-16. Every claim links to its source.
AI coding tools make it tempting to build everything yourself. Sometimes you should. Often a $100-a-month tool that covers 80% of the job is the better deal.
Written by a gym owner who has built his own tools. Here's how to decide, with real prices and the cost nobody puts on the invoice: babysitting.
How to read the dumbbells
Build effort: how hard it is to get working the first time. Babysitting: how much attention it needs every month after that. One dumbbell is easy. Five means clear your weekends.
What the ~$100/mo tool actually buys you
Not just features. You're renting someone else's maintenance team. When a carrier changes texting rules or an API breaks, it's their problem.
Example: HighLevel's Starter is listed at $97/month (or $970/year) and bundles CRM, SMS, email, booking calendars, reviews tools and workflow automation. Its pricing page also says usage-based charges apply for phone, SMS, email and AI. [source]
Example: NiceJob Starter is $75/month for SMS and email review requests; Pro is $125/month. [source]
Watch for: usage fees, features locked to higher tiers, and plans whose price isn't public.
What building it yourself takes
Time: a weekend for a prototype is realistic. Making it reliable takes longer.
AI coding tools: Cursor and Lovable both have free tiers, plus paid plans. Check their pricing pages for current prices. [source] [source]
Hosting: Vercel's Hobby plan is $0 but is for personal, non-commercial use. Pro is $20/month. [source]
Plumbing: anything that texts needs an SMS provider. Twilio lists $0.0083 per US SMS segment plus carrier fees, $1.15/month for a local number, and A2P 10DLC registration fees. [source]
The hidden cost: babysitting
Breakage: the thing works great until it silently doesn't, usually on a Saturday.
API and rule changes: vendors change APIs, carriers change texting rules. Every connection is a dependency you now own.
Staff training: your front desk has to learn your tool, and there's no help center but you.
Rule of thumb: put a number on your hour. If babysitting eats two hours a month, add that to the DIY price before comparing.
Missed-call text-back
Buy: HighLevel Starter, listed at $97/month (or $970/year), plus usage-based phone/SMS charges. [source]
DIY: Twilio number ($1.15/mo) + a small function that texts back when a call goes unanswered, hosted on Vercel Pro ($20/mo). Texts are pennies. [source] [source]
Call: Cheap to run, but texting compliance (10DLC registration) and call routing are fiddly. Buy unless you enjoy carrier paperwork.
Lead follow-up
Buy: Mindbody Ultimate includes a lead management dashboard and automated email and text campaigns. Mindbody doesn't publish the Ultimate price; plans start at $79/month per location (Starter). [source]
DIY: A form that writes to a spreadsheet, plus AI-drafted follow-up texts through Twilio. The hard part is syncing with your member software so you don't text people who already joined. [source]
Call: Usually buy. Lead follow-up lives or dies on clean data from your booking system, and that's where DIY builds break.
Review requests
Buy: NiceJob Starter, $75/month: SMS and email review requests, review widgets, a reviews page. [source]
DIY: Google gives you a free review link and QR code. Send it after a class milestone with a simple automation or by hand. [source]
Call: Build, or barely build. A link, a QR code at the desk, and a habit get you most of the way. Note: Google prohibits incentives for reviews.
Reporting
Buy: Mindbody Accelerate adds advanced reporting and analytics dashboards. Price isn't published ("Let's talk"). [source]
DIY: Export your member data to CSV and have an AI tool build a weekly dashboard. Hosting a private page on Vercel Pro is $20/month. [source]
Call: Good first DIY project. Reports are read-only, so when one breaks, nothing gets texted to the wrong person.
The 4-question test
1. Does a tool cover 80% of the job for under ~$100/month? Lean buy.
2. Does it touch members directly (texts, billing, calls)? Lean buy. Mistakes are public.
3. Is your workflow weird enough that tools need constant workarounds? Lean build.
4. Will you still want to maintain it in a year? If not, buy.
How much does HighLevel cost?
HighLevel's pricing page lists Starter at $97/month (or $970/year), with usage-based charges for phone, SMS, email and AI. [source]
How much does NiceJob cost?
NiceJob lists Starter at $75/month and Pro at $125/month, no contracts. [source]
What does it cost to send texts myself?
Twilio lists $0.0083 per outbound US SMS segment plus carrier fees, and $1.15/month for a local number. A2P 10DLC registration fees also apply. [source]
Things change. Check with the vendor before you buy.