Every coaching platform says "free" somewhere above the fold. Most of them mean a trial. The difference is not marketing hair-splitting: it decides whether your first three clients are a business you can run at zero cost for as long as you like, or a countdown that ends with a card form. (Disclosure: we make AirFit, which has a free plan. We'll say when that shapes an opinion.)
What a free trial is
A time-boxed copy of a paid plan. Usually 14 or 30 days, sometimes with every feature and unlimited clients, sometimes with a card taken up front. When it ends, one of two things happens: you pay, or your account drops to whatever the platform does with non-payers — often read-only, sometimes deleted after a grace period. The trial's job is to get you invested enough that paying is easier than leaving.
What a free plan is
A tier with no end date and no card. It has limits — a client cap, a storage cap, sometimes a feature list — and those limits are the whole deal: as long as you're under them, you pay nothing, forever. The free plan's job is different: it's a product for people the paid plan doesn't fit yet, and a bet that some of them will grow past the limits.
Why the difference matters more than it sounds
- Your first clients are slow. Client one arrives in week two, client three in month three. A 14-day trial is over before you've had a real week of coaching in it. A free plan is still there in month three.
- The card changes your behavior. With a trial you rush to "get your money's worth" and evaluate under pressure. With a free plan you evaluate the way your clients will experience it — slowly, week by week.
- The exit is honest. Leaving a trial you didn't convert usually means losing the work. Leaving a free plan you've outgrown means upgrading — the work stays.
How to read a pricing page in thirty seconds
- Find the word "free". Is there a plan column priced at $0 with no asterisk? That's a free plan. Is it a badge that says "free trial" or "try free"? That's a trial.
- Find the client cap on the $0 column. One client is a demo. Five is a side business. Unlimited-for-30-days is a trial in disguise.
- Find what's grayed out. Forms, nutrition, branding and payments are the features most often held back. A free plan that removes them is free for the workouts and paid for the practice.
- Look for a card icon on the signup button. "No card required" on the free plan is the tell that it really has no end date.
Where the platforms land
As of August 2026: Trainerize has both — a one-client free plan and a 30-day unlimited trial. Everfit has a real five-client free plan with the workflow features on the paid tier. TrueCoach has a 14-day trial and no free plan. AirFit has a 5-client free plan with every feature, plus 30 days of the Pro limits on every new account, no card either way. The full survey, with the numbers, is in the best free personal trainer software in 2026.
The one rule
Use trials to decide between paid plans you've already chosen to pay for. Use free plans to start. If you're under five clients and paying for software, you're funding a trial that never ended. Here is what ours holds, limits and all.