Home on Parameter

Connect your AI

Mon, 01 Jan 0001 00:00:00 +0000

Every AI client connects to the same address:

https://mcp.parameterfit.com/mcp

The same URL, with setup instructions, lives in the app under Settings, AI Connection, Setup instructions. It appears after a one-time consent screen that spells out exactly what a connected AI can read and change. The AI Connection is the app’s one paid feature; the 14-day trial covers it.

Whichever client you use, adding the connector ends the same way: a sign-in window opens and Apple asks you to sign in to iCloud. Two things matter there.

Coaching prompts that work

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None of these prompts are special phrasing tricks. What makes them work is that your AI can check them against your actual profile, equipment, and history through the MCP server, instead of guessing.

Plan a training block

“Plan my next four weeks. Half marathon on October 12, strength Tuesdays and Thursdays, one full rest day a week.” Dates, constraints, and goals in one message beat ten rounds of clarification.

You: Plan my next four weeks. Half marathon on October 12, strength Tuesdays and Thursdays, one full rest day a week.

Assistant: Building a four-week block toward October 12, strength on Tuesday and Thursday, Sunday held as a full rest day. Sending week one to Parameter now.

Adapt around life

Set your status first (sick, injured, traveling, on break), then: “I set my status to traveling through Friday. Rework this week around hotel gyms.” Your AI is required to plan around a non-ok status, so the status update does real work, not just a note to yourself.

Controlling your treadmill, bike, or rowing machine from Parameter

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Pair the machine

Open Settings, Machine control, Add machine.
Parameter scans for FTMS-compatible Bluetooth machines nearby. Wake your treadmill, bike, or rower’s console so it’s advertising, and it should appear within a few seconds.
Select it from the list and confirm the pairing.

Once paired, it’s saved under Your machines for every workout after. You won’t repeat this step unless you swap equipment or reset your phone’s Bluetooth settings.

Choose what it may control

A master toggle arms machine control, then per-function toggles for speed, incline, resistance, and power. Turn on only what you want handed over: incline but not speed, say, if you’d rather set your own pace.

Set up your equipment

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Pick what you own

The catalog covers about 110 equipment types, from barbells to bands. Go through Settings, Equipment and check off what you have at home and what your gym has. Your AI plans only with what’s actually available to you, so this list is what keeps suggested workouts realistic instead of aspirational.

Open Settings, Equipment.
Check off each item you have regular access to, at home or at your gym.
Leave off anything you don’t have, even if you sometimes use it as a guest somewhere else. You can always add it later.

Inventory your plates and dumbbells

List the plates on your rack and the dumbbells on your stand. This is what feeds the plate calculator’s per-side math and keeps suggested loads buildable rather than landing on a number you can’t actually load.

Interval training

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Read the screen

The current segment fills the display: what you’re doing, the target, and time or distance remaining. The next segment previews below it, so a pace change never ambushes you mid-stride.

A small spec badge in the corner, SEG 3/8 · 400 M, shows where you are in the workout, so you always know how much is left without counting in your head.

Cues and the countdown

Segments advance themselves; you don’t tap anything to move from one to the next. Each event, a warmup ending, a rest starting, a hard effort beginning, has a distinct sound and haptic, and a 5-4-3-2-1 countdown leads every transition. Cues fire whether the app is backgrounded or the phone is locked, so you can put the phone in an armband and forget it’s there.

Strength routines

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A strength day in Parameter is a checklist, not a stopwatch. Here’s exactly how it runs, block by block.

1. The checklist

Your routine runs as a block-by-block checklist: straight sets, supersets, circuits. Each set shows the planned load and reps, and right underneath it, “Last: 9 × 35 lb” or whatever you logged the previous time you ran this exercise. The one question that usually interrupts a set (what did I lift last time) is already answered before you ask it.

The Apple Watch guide

Mon, 01 Jan 0001 00:00:00 +0000

1. Independent mode

Leave the phone at home. The watch app is a complete copy, not a remote: you can start, run, and log any workout from the watch alone, with no phone in range. Pace, heart rate, and your workout log all keep working independently. When the phone comes back into range, whatever you logged on the watch syncs back automatically.

2. Starting from the watch

Open a planned workout on the watch the same way you would on the phone, and start it there. Nothing about starting a workout requires the phone to be present, unlocked, or even nearby.

Building workouts by hand

Mon, 01 Jan 0001 00:00:00 +0000

Connecting an AI is optional. Every workout type, every builder, and the full history and charts work the same whether or not an AI is attached to your account. This guide covers using Parameter as a standalone, manual tracker.

1. The interval builder

Build interval workouts from segments defined by time or distance. Set a target for each segment as a speed, a pace, or a heart-rate zone chip, and use repeats so a workout like 8×400m is three taps (one segment, one repeat count, one rest segment) instead of thirty-two individual rows.

Understanding your history

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1. Planned versus actual

Every workout’s detail view shows what was planned and what actually happened, side by side, per set and per segment. If you adjusted a weight, swapped an exercise, or ran a segment slower than planned, that difference is marked directly on the entry. Deviations are never hidden or averaged away: the point of the view is to show exactly where the session diverged from the plan.

Do I need an Apple Watch?

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No. Everything runs on the phone. The watch is recommended, since mirroring, haptics, and wrist logging are a big part of the experience, but it is never required. On a paired FTMS machine you get live speed, distance, and grip heart rate with no watch at all.

What does the $1/month actually gate?

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Only the AI connection. Logging, execution, the watch app, machine control, history, and export are free, and stay free.

What exactly can my AI see and do?

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It can read your profile, equipment, and workout history, and write plans and workouts. It can never write your logs, your profile, or your equipment. The boundaries are per-tool and hard-coded.

What happens if the app crashes mid-workout?

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Nothing is lost. Every check-off and transition is saved to disk before the screen advances, so reopening offers to resume or save as partial, and the recovered HealthKit session reattaches with all its samples.

Which machines work?

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Bluetooth FTMS-compatible treadmills, bikes, and rowers. For everything else, the console table flattens any interval workout into numbered steps you key in by hand.

Your data: export, delete, revoke

Mon, 01 Jan 0001 00:00:00 +0000

Privacy claims are only worth as much as you can check yourself. These are the controls that make Parameter’s checkable: what you can pull out, what you can wipe, and what happens when you cut an AI off.

1. The export zip

Request an export and you get one zip: your complete workout data as both JSON and CSV, plus a plain-language README explaining the format, so you don’t have to reverse-engineer field names yourself. The export includes archived and soft-deleted workouts, not just whatever is currently visible in your active history. It’s free, it isn’t gated behind a paywall or a support request, and it stays available for as long as your account exists.

How do I disconnect an AI?

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Settings → AI connection → Revoke, per client. It takes effect in about a minute. New connections trigger a “Was this you?” alert, so nothing connects quietly.

How does the trial work?

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14 days, the full app including the AI connection. Apple shows the price, $1/month, before the trial starts and notifies you before it converts. No card details go to us; it’s a standard App Store subscription.

The watch isn't syncing.

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Open Parameter on both devices and mirroring resumes automatically. If it doesn’t, check both are signed into the same Apple ID and that iCloud for Parameter is on.

Which AIs work?

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Claude, ChatGPT, Gemini, Grok, Perplexity, Microsoft Copilot (through a Copilot Studio agent), and any client that speaks MCP. Capabilities and setup differ per client; see the connect-your-AI guide for setup steps and the Why Parameter page for what that means in practice.

Will Parameter start or stop my treadmill?

Mon, 01 Jan 0001 00:00:00 +0000

Never. It adjusts speed, incline, resistance, and power, but the machine starts and stops only when you do it. The one Stop button in the app is gated behind an explicit confirmation.

Home on Parameter

Connect your AI

How the sign-in works, for every client

Coaching prompts that work

Plan a training block

Adapt around life

Controlling your treadmill, bike, or rowing machine from Parameter

Pair the machine

Choose what it may control

Set up your equipment

Pick what you own

Inventory your plates and dumbbells

Interval training

Read the screen

Cues and the countdown

Strength routines

1. The checklist

The Apple Watch guide

1. Independent mode

2. Starting from the watch

Building workouts by hand

1. The interval builder

Understanding your history

1. Planned versus actual

Do I need an Apple Watch?

What does the $1/month actually gate?

What exactly can my AI see and do?

What happens if the app crashes mid-workout?

Which machines work?

Your data: export, delete, revoke

1. The export zip

How do I disconnect an AI?

How does the trial work?

The watch isn't syncing.

Which AIs work?

Will Parameter start or stop my treadmill?