A kid just got sick and Mom cancelled the 3pm. Three families on your waitlist would take it.
SlotFill texts your waitlist the moment a speech session opens. First family to respond gets it. You never pick up the phone.
The Cost of Empty Slots
You already know this feeling
It's 1pm and you get the text: "So sorry, Liam has a fever. Can't make our 3pm." That's $150-200 gone. And it happens constantly — kids get sick, parents forget, school pickup runs late.
You've got eight families on your waitlist who'd love that slot. But you're in a session until 2, and your admin (if you have one) is handling insurance pre-auths. By the time someone calls the list, there's not enough notice for anyone to rearrange their afternoon.
So the slot sits empty. And a kid who's been waiting three months for a regular spot misses another week.
What if your waitlist worked for you?
When a session opens, tap once. SlotFill texts every family who'd want that time. The first parent to reply "YES" is booked.
No calling three families and leaving voicemails. No group text chain. No "let me ask my husband and call you back." Just: slot opens, text goes out, slot fills.
Built for how speech therapy practices actually work
Pediatric cancellations are higher than any other specialty. Kids get sick constantly. SlotFill doesn't try to prevent that — it fills the gap before the revenue is lost.
Your waitlist families are desperate to get in. Some have been waiting months. They would love to grab a one-off session while they wait for a regular slot. SlotFill makes that possible without you managing it.
Parents get a text. They reply YES. That's it. No app to download, no portal to log into, no password to remember. The simplest possible interaction for a busy parent.
HIPAA-conscious. No patient details in the text. No names exposed. Just "a session is available at [time] — reply YES to claim it."
Everything you need to fill last-minute openings
Simple, fast, and built for busy SLP practices
Instant Broadcast
Send SMS to your entire waitlist in seconds when a slot opens up
Never lose revenue to last-minute cancellations
First-Claim Wins
Fair system where the quickest responder gets the appointment
Fair and transparent for your clients
Simple for Clients
One-tap claim link. No apps to download, no accounts to create
Higher response rates with zero friction
How It Works
Three simple steps to fill your cancelled appointments
Client Cancels
Create an opening in 30 seconds
Broadcast
SMS sent to your waitlist instantly
Slot Filled
First to tap claims it
Built with Privacy in Mind
Your client data stays secure. Period.
Encrypted Data
All data encrypted in transit (TLS 1.3) and at rest (AES-256)
HIPAA-Conscious
We store only scheduling data, never clinical notes or PHI
US-Based Servers
Data hosted on SOC 2 certified US infrastructure (Supabase, Vercel)
Data Ownership
Export or delete your data anytime. Your client list is yours
Sound Familiar?
These are the problems SlotFill solves
"Kids get sick and families cancel last-minute constantly"
Pediatric practices face higher cancellation rates. Fill those slots fast.
"My waitlist families would love an earlier appointment"
Parents are eager to get their kids seen. They just need to know when something opens.
"Every empty slot costs me $150-200"
Last-minute cancellations aren't just frustrating — they hurt your bottom line.
One empty speech session costs you $150-200. SlotFill costs $39/month. Fill one extra session a month and you've paid for a year.
Start free, upgrade when you need more
Free Trial
Try everything with no commitment
- 50 SMS included (~5 cancellations)
- Unlimited waitlists
- Unlimited clients
- First-claim system
- Full access to all features
Pro
Everything you need to fill cancellations
- 300 SMS per month (~30 cancellations)
- Unlimited waitlists
- Unlimited clients
- Analytics dashboard
- Email support
- Buy extra SMS anytime
Frequently Asked Questions
Everything you need to know about SlotFill
When you broadcast an opening, all eligible clients on your waitlist receive an SMS with a unique claim link. The first person to tap the link and confirm claims the slot. Everyone else sees a 'slot already claimed' message. It's fair, fast, and transparent.
No! That's one of the best parts. Clients receive a simple SMS with a link. They tap it, see the appointment details, and tap again to confirm. It works in any mobile browser - no app downloads, no account creation, no passwords to remember.
Absolutely. We use industry-standard encryption for all data in transit and at rest. We don't store session notes or clinical information, only the minimum contact info needed for scheduling. Your client list stays yours.
You have two options: add clients manually through your dashboard, or share your unique waitlist join link. Clients can add themselves via that link - they just enter their name and phone number. You can review and manage all waitlist members anytime.
Families are waiting months to get in. Sessions are going empty every week. Connect the two.
Start your free 30-day trial.
No credit card required · 50 SMS included · Cancel anytime