Price at 5, 20 and 50 clients
The honest comparison is at a fixed client count, because both tools charge by it. These are monthly prices, base plan only, before any add-ons.
| Clients | Trainerize | TrueCoach | Onyx Coach |
|---|---|---|---|
| 5 | $25 (Pro 5) | $29.98 (Starter) | €29 (Pro) |
| 20 | $79 (Pro 30) | $69.98 (Standard) | €29 (Pro) |
| 50 | $135 (Pro 50) | $164.98 (Pro) | €29 (Pro) |
| 51 and up | Pro 75 at $180 to Pro 200 at $250, then Studio Plus $275 | Custom quote by email | €29 (Pro) |
Both pricing pages open on annual prices. Billed annually, Trainerize is 10% less ($23, $71 and $122) and TrueCoach is $26.34, $57.99 and $136.99 a month. Trainerize has no 20-client tier, so 20 clients means Pro 30. TrueCoach has no public price above 50 clients.
How each one limits clients
Trainerize sells seats in tiers. When you pass the tier you move to the next one, and the tiers are close together at the bottom (1, 2, 5, 15, 30) and wide at the top (50, 75, 100, 200, 500). Most working trainers sit in Pro 15 to Pro 50.
TrueCoach has three caps: 5, 20 and 50. The jump from Standard to Pro is the one that hurts. Client 21 costs an extra $95 a month on monthly billing ($79 on annual), and you then carry seats you may not fill until you are near 50.
Onyx Coach has no cap. Pro and Elite both include unlimited clients; the only difference between them is the number of premium client slots that switch on the AI features for the clients you choose.
What is sold separately
| Trainerize | TrueCoach | Onyx Coach | |
|---|---|---|---|
| Nutrition and meal plans | Add-on, $20 to $45 | MyFitnessPal tracking included | Not a feature |
| Scheduling and booking | Business add-on, $25 | Not sold as an add-on | Calendar included |
| Payments in the app | Stripe add-on, $10 | Included, 5% fee per transaction | Not a feature |
| Video calls | Add-on, $10 | Not sold as an add-on | Not a feature |
| Branded app | $169 one-time on Pro | Included on Standard and Pro | Not a feature |
| Wearables and Zapier | Integrations included | Standard and Pro only | Apple Health and Google Health Connect sync; no Zapier |
| AI in the workspace | AI workout builder on Grow and up | Not public | Included, plus a Claude or ChatGPT connection |
Trials and billing
Trainerize gives 30 days with unlimited clients and no card. TrueCoach gives 14 days with no card, and its annual plans carry a 90-day money-back guarantee for first-time subscribers. Onyx gives 14 days with no card; if you do nothing at the end of the trial, nothing is charged.
Annual billing takes 10% off Trainerize. On TrueCoach it is one month free on Starter and two months free on Standard and Pro.
Which one, then
Pick Trainerize if you run an online coaching business with nutrition, products and a branded app, and you are fine paying for each of those on top of the base tier. It is the most complete of the three.
Pick TrueCoach if you coach a stable roster under 20 online, want wearable data and Zapier flows, and prefer a simpler tool without an add-on menu.
Pick Onyx Coach if you coach in the gym as well as online and want the session logged live while you stand next to the client, with one price that does not move when your roster does. At 20 clients it is €29 against $69.98 on TrueCoach and $79 on Trainerize; at 50 it is €29 against $135 on Trainerize and $164.98 on TrueCoach.
Questions
Is Trainerize or TrueCoach cheaper?
On monthly billing, Trainerize is cheaper at 5 clients ($25 vs $29.98) and at 50 ($135 vs $164.98), and TrueCoach is cheaper at 20 ($69.98 for Standard against $79 for Trainerize Pro 30). Billed annually, TrueCoach drops to $26.34, $57.99 and $136.99 and Trainerize by 10%. Trainerize gets more expensive once you add nutrition, business or video add-ons.
Which has the longer free trial?
Trainerize, at 30 days with unlimited clients. TrueCoach and Onyx Coach both give 14 days. None of the three asks for a card.
Does either one have unlimited clients?
No. Trainerize tops out at Studio Plus tiers and TrueCoach at a custom quote above 50. Onyx Coach includes unlimited clients on both of its plans.
Can I move my clients from Trainerize or TrueCoach to Onyx?
Yes. Human support is included in every Onyx plan and helps you onboard your first clients and migrate existing plans.