Fons vs Harness
Fons
fons.comHarness
harnesscalendar.comSide by side
| Figure | Fons | Harness |
|---|---|---|
| Price from | $19.95/mo | $15/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| Plans published | 1 | 2 |
| Spec score · Music Lesson Scheduling Software | 8.1 (#8) | 8.0 (#12) |
| Billing | It offers three automated billing models intended to reduce invoicing and payment chasing. | Instructors can customize rates, billing schedules, and payers. |
| Purpose | Fons describes itself as studio management software for music teachers that automates and simplifies their businesses. | Harness is a calendar and studio management platform for private lesson instructors. |
| Scheduling | The product supports online booking, streamlined scheduling, and tracking cancellations. | Students can use shared scheduling or rescheduling links to choose available times. |
| Security | Fons publishes a vulnerability disclosure policy covering fons.com and fons.app and asks researchers to report issues responsibly. | The privacy policy says each instructor's data is isolated at the database level and cannot be viewed by other platform users. |
| Support | The Suzuki Association member offer includes concierge onboarding and training, ongoing business support, and webinars. | The contact page lists technical support by email and says Harness aims to respond to all inquiries within 24 business hours. |
Plans
In their own words
Harness
Harness is a web-based calendar and studio management platform for private lesson instructors. Students can use shared scheduling or rescheduling links to choose available times, while families can view lessons, notes and invoices through a student portal. Instructors can customize rates, billing schedules and payers. Calendar tools include attendance and payment tracking, lesson events with assigned rates, drag-and-drop scheduling and availability annotations. Student profiles combine details, lesson history and payment balances, with automatic status tracking and intake forms. Finance features include income and expense tracking, invoices, Stripe-powered payments, profit and loss statements and Schedule C compliant exports. The free Hobby plan supports up to five students. Professional costs $15 a month and lists unlimited students, automated monthly billing, payment reminders, self-serve scheduling links and priority email support. A 30-day trial is available. The documentation says Harness is in active development.