Client tracking software for fitness coaches and dietitians: without per-client pricing

Coaching tools charge per client: the bill climbs as your appointment book fills. A tool of your own has room between sessions, where publishers impose their exercise libraries and food databases. What it covers, what it cannot replace, and where to start.

Client tracking software for fitness coaches is billed per client: $19 per month for up to 5 active clients at Hexfit, $90 for 40–150 clients (publisher pricing consulted September 2, 2026). INJEP recorded 203,000 registered sports instructors in 2022. A tool you own costs the same for 5 clients as for 300.

What market tools do well

Nutrium, Hexfit, and ABC Trainerize cover the profession as most practitioners practise it: ready-made exercise libraries, client applications, meal plans, reminders, and payments. A starting coach saves months by adopting one instead of building anything. Nutrium lists €299 annually for unlimited patients, or €39 monthly without commitment, and €179 annually for the plan limited to ten clients per month, including a fourteen-day trial (pricing consulted September 2, 2026). For a solo practitioner following twenty people without unusual rules, the price justifies itself.

A bill tied to your appointment book

This market counts clients followed rather than users. Hexfit rises from $19 to $50 between five and thirty active clients, then $90 up to 150 and $250 beyond 500; its dietitian schedule starts at $59 for thirty clients and reaches $119. ABC Trainerize goes from free for one client to $9 for two, then at least $23 for Pro in tiers from five to 200 clients, plus options: $20–$45 for advanced nutrition, $25 for management, $10 for video, $10 for payments, and a one-off $169 for a branded application (publisher schedules consulted September 2, 2026, in dollars). Your software bill therefore rises as business takes off, the problem already described for per-user pricing in a hiring team.

Public complaints concern everyday details. On Capterra on June 1, 2026, a Hexfit user criticises 'the ergonomics of the application for both provider and client' and wants faster duplication of certain training settings. Maegan, on July 2, 2025, describes ABC Trainerize's 'synchronisation problems with MyFitnessPal' and lack of an integrated food database. Becky, in April 2022, finds Nutrium makes it 'difficult to track and compare previous laboratory results' for markers such as iron. In all three cases the publisher's data model will not bend, and the practitioner works around it.

Between-session follow-up, where the gap lies

The space for custom software is wide. An exercise library can be your own, with your videos and words. Clients can complete a between-appointment journal of feelings, pain, weight, and photos, with an alert when someone has entered nothing for ten days. Measurements and markers can be compared between assessments on a graph the client understands during consultation. Meal plans can use equivalents rather than weighing, based on what the person already eats, on one printable page. Session packages can show how many remain, when to follow up before expiry, and what goes to accounting.

What you will not build yourself

Three components must still be purchased. Whenever a dietitian stores identifiable health data with a provider, that hosting must be HDS-certified: it is contracted, not coded. The Ciqual nutritional composition table is a third-party reference database to query without copying. And the public directory where new clients find practitioners creates an audience no internal tool reproduces. There is also the till: paragraph 375 of tax guidance rules out software developed for a professional's own needs without an accredited body's certificate. The nuance matters here because microentrepreneurs and professionals under the basic VAT exemption are outside this obligation, covering much of the profession. Two deadlines also deserve attention. The French Digital Health Agency announces HDS framework version 2.1 for October 2026, applicable three months after publication, stated as December 2026, with new transparency requirements for transfers outside the European Union (July 15, 2026 news item): the three tools above are hosted outside France. Electronic invoice receipt has been required since September 1, 2026, with issuance from September 1, 2027 for SMEs and microbusinesses through an approved platform; the timeline is in our dedicated article. Paid sports instruction also requires a valid professional card (Articles L212-1 and R212-85 of the French Sports Code). Check your circumstances with your adviser.

The smallest step that already helps

The first delivery does one thing: the client's between-session journal. Marcel, the agent dividing the work, puts it first because it helps from the first evening. Amélie builds it, Félix verifies it with tests written before code, and you open it the next day with three volunteer clients. If the journal holds up, the next steps rest on reality: measurements, then packages, then meal plans. If it fails, you lost an evening instead of a quarter. The AI budget depends on the assistant, its plan and the work requested. Our measured AI spending covers specific tests and does not set this tool's price. Also budget for your approval time, any hosting, external services and maintenance. Maestro organises this on your Mac and remains free for invited beta testers.

Where to start

Take your latest coaching software bill and the client count that month. Division gives what you pay per client per month. Then list what you keep outside the tool: the measurement spreadsheet, message thread where clients describe their week, notebook of remaining sessions. That list is the first piece's specification. The long-term calculation works like any industry subscription.