How Much Do AI Fitness Apps Cost? The 12-Month Math (2026)

By the Trunk teamUpdated September 7, 202614 min readPrices verified September 7, 2026

How much do AI fitness apps cost? Twelve months runs $59.99 to $399.99 on the annual plans as of 2026-09-07 — or $599.88 if you pay Dr. Muscle month to month — with the coaching-style apps at the top end and tracker-style apps with a generator built in clustered between $59.99 and $99.99 a year. ChatGPT, Claude, and Gemini all have $0 tiers; their cheapest paid plans run $59.88 to $200 for a year, and their top consumer tiers start at $100 a month.

Disclosure first: we make Trunk. Trunk+ is a $9.99 one-time unlock that connects your logged sets to a ChatGPT, Claude, or Gemini account you already have. Trunk is iOS only, has no Android app, and its App Store rating is 5.0 from exactly one rating. Every competitor number below links to the page it came from, so you can check our work.

How much do AI fitness apps cost over 12 and 24 months?

Two rules make the table comparable. The 12-month column uses the cheapest full-year route the vendor publishes, which is almost always the annual plan; the 24-month column doubles that, or leaves a one-time price alone. Hevy and Strong are in the table at $23.99 and $29.99 a year because they anchor the cheap end, not because they run AI.

All prices verified 2026-09-07 from the linked page. USD, US storefront; prices vary by region and change without notice. Paying month to month for a year costs more than the annual route: $599.88 for Dr. Muscle, $419.88 for JuggernautAI, $215.88 for Ellim Plus, $191.88 for Fitbod. Strong also lists a $23.99 yearly SKU, and Hevy lists a second monthly SKU at $3.99, on the same App Store pages.

Strong has no AI features at all. Hevy's own help center says its Trainer programs are "generated using an algorithm and do not rely on AI", and Trainer is Pro-only. Alpha Progression sits in the same position: its site never uses the word AI, describing an algorithm that recommends the weight and reps for your next set.

Two numbers in that table are worth staring at. Dr. Muscle at the monthly rate is $599.88 for one year, plus another $18.99/mo if you add the meal plan (source). And Fitbod's month-to-month year ($191.88) costs almost exactly the same as two full years on its annual plan ($191.98).

Two apps whose yearly cost nobody can compute

Zing Coach's App Store listing shows in-app purchases at $18.99, $29.99, $39.99, and $59.99, plus a $19.99 one-time Body Scan Report, all verified 2026-09-07 (source). Only the $29.99 item carries a billing period on the listing (3 months). Zing's help center lists four Premium durations — one week, one month, three months, twelve months — prints no prices at all, and says what you are offered varies by sign-up date, location, and user profile (source). Every article that prints a Zing annual price is guessing which SKU is the yearly one, so we are not printing one; check the app's pricing page.

Freeletics is a near miss rather than a blank. Its listing names six auto-renewing options — Training at 3, 6, and 12 months, and Training and Nutrition at 3, 6, and 12 months — but attaches no period to any individual price. The Training Coach prices sit there as $34.99, $59.99, $74.99, and $79.99, the bundle at $49.99 and $89.99, so which figure buys a year is a guess. Freeletics also sells a one-time Lifetime Access, but only through its own website, and we could not read the price. Check the App Store listing and the Lifetime Access article.

Why three articles quote three different prices for the same app

These apps run many price SKUs at once, and the App Store shows a rotating subset of them with no billing period attached. Fitbod's listing carries a Monthly Plan row at $12.99 and another at $15.99, A Year of Fitbod Elite at $79.99 and again at $95.99, and a stack of unlabeled legacy rows; the set we saw changed between page loads, and across three fetches the legacy amounts ranged from $2.99 to $59.99. Hevy lists two monthly rows, $2.99 and $3.99. Strong lists both $23.99 and $29.99 for a year, and both $79.99 and $99.99 for the Forever unlock, on one page.

Some of that is documented. Fitbod's help center says legacy plans cannot be reinstated once cancelled and that the old pricing is gone for good (source), and Zing's says the offer depends on your sign-up date, location, and profile. Hevy and Strong publish no explanation for their duplicate SKUs at all, which is the point: nothing on the store page tells you which price is yours.

So where a vendor publishes a number on its own help center or pricing page, we use that. Fitbod's help center states $15.99/mo and $95.99/yr, which is the row in the table above. Where a vendor publishes nothing, we say so instead of picking a SKU and hoping.

What ChatGPT, Claude, and Gemini cost

Verified 2026-09-07 from each vendor's own pricing page. USD; prices may change. Google AI Plus is $4.99/mo at the 400 GB tier; Google One lists a 2 TB variant of the same plan at $9.99/mo (source). App Store in-app purchase prices differ from these web prices for the same plans.

Free tiers matter here because reading a link costs the assistant almost nothing. Claude's free plan is $0 and lists web search; you turn it on per chat from the "+" button in the composer, and with it on Claude can pull the full contents of a URL you hand it (source). OpenAI's help center says web search is available on ChatGPT Free, Go, Plus, Pro, Business, Enterprise, and Edu, and OpenAI's bot documentation says ChatGPT may visit a web page with a ChatGPT-User agent when a user asks about one (source, source).

Gemini is where the documentation runs out. Google publishes no page saying the Gemini app will open a URL you paste into chat. Our developer has run it and it works, which is one person's testimony rather than vendor documentation or a published test — treat it that way. No vendor publishes a numeric free-tier browsing quota either, so nobody can tell you how many link reads a free plan gets before it throttles.

Paying twice for AI

Here is the arithmetic that matters. If you pay $20/mo for ChatGPT Plus, that is $240 over 12 months for an AI that can already read a web page and write a training block. Add Ellim Plus at $99.99/yr and you are at $339.99 for the year with two AI bills. Ellim's own privacy policy names Anthropic, OpenAI, and Google as the processors behind its AI features (source) — one reason an in-app AI tends to be a subscription, since every generated program costs the app money. It is not the only reason: the algorithmic generators in the first table have no LLM bill at all and still charge monthly.

What two AI bills actually cost

Arithmetic from the verified prices in the two tables above, all verified 2026-09-07. USD; prices may change.

ChatGPT Plus or Claude Pro plus Trunk+ costs less over a year than JuggernautAI ($349.99) or Dr. Muscle ($399.99) alone, and the assistant is still useful for your email and your taxes. Stay on a free assistant tier and the AI part of your training costs $9.99 once and nothing after that. Only two rows in the first table charge less than $9.99 for a single month — Hevy at $2.99 and Strong at $4.99 — and neither of them runs an LLM.

How the Trunk+ setup works

It is a copy and paste, not an integration: Settings, Trunk+, Connect AI, Generate Key, Copy Prompt, then paste that prompt into your assistant. It opens a private URL and reads your real logged sets. Ask it for a program and it replies with a single import link — tap it, check the program on the confirmation page, tap Add to Trunk. We wrote the step-by-step in connecting ChatGPT to a workout tracker.

One caveat you should hear from us rather than discover: that URL is a bearer secret. Anyone holding it can read your workout data until you tap Revoke Key.

Where a built-in AI does something your ChatGPT cannot

One-time unlocks that already exist

HevyGPT

Trunk is not the only route from a workout log to your own assistant. HevyGPT is an official custom GPT built by Hevy: you connect it from Hevy's Integrations screen, ChatGPT reads your training history, and it writes generated routines back into the app without any copy and paste. It works on a free Hevy account.

Its limits are specific. A free Hevy account caps you at 4 routines, so a bigger generated plan will not import. It is ChatGPT-only — no Claude, no Gemini — and Hevy's page says the Android ChatGPT app will not do it (source).

Two other things moved recently. Hevy shipped a one-way send-workouts-to-ChatGPT-and-Claude button in v3.1.12 on 2026-09-03, and it gives Pro users a public API key, though those docs are v0.0.1 and Hevy warns it may change the structure or abandon the project (source). Liftin' announced an MCP beta for ChatGPT and Claude in July 2026; we could not verify whether it needs the paid tier. We compare the two closest options in HevyGPT vs Trunk Connect AI.

Lifetime unlocks compared

Verified 2026-09-07. USD, US storefront; prices may change. Strong's App Store page also lists a $79.99 PRO Forever SKU.

Trunk+ is the cheapest one-time unlock among the iOS trackers we researched, which is a narrower claim than cheapest anywhere. On Android, FitNotes is free forever with no ads and no in-app purchases (source), and its optional Supporter app is $6.99 once as of 2026-09-07 — cheaper than Trunk+, with no AI of any kind (source). Hevy Pro Lifetime pays for itself against Hevy's own $23.99 annual plan in a little over three years; Strong PRO Forever takes about three and a third years against $29.99/yr.

Bridges that are not trackers

A second group sells the connection itself rather than the log. Arvo publishes arvo-mcp, a free open-source MCP server that reads your history and writes workouts back, though it needs an Arvo account (source). AthleteData bridges 30-plus services — Hevy, Garmin, WHOOP, Apple Health — into Claude, ChatGPT, or Perplexity on an MCP-only plan at $9/mo, with no annual option offered, verified 2026-09-07 (source). Caliber ships an MCP server inside its paid tier; we could not verify that tier's price, so check Caliber's pricing page. None is a gym log, and we have not priced them to the same standard.

Who should pick which

You already pay for ChatGPT and you already use Hevy. Use HevyGPT. It is free, official, bidirectional, and needs no copy and paste. Switching apps to save a subscription you are not paying for makes no sense. If you outgrow the 4-routine free cap, Hevy Pro Lifetime at $74.99 is a clean one-time exit from that decision.

You use Claude or Gemini, or you want no routine caps. This is where Trunk+ fits: $9.99 once, any assistant that can open a link, and a free tier with no caps on programs, days, exercises, or history, so a generated plan never bounces off a limit. If all you want is to paste a Claude- or Gemini-written plan into a tracker, Ellim's free tier imports pasted text and photographed plans and caps nothing — Trunk+ is for when you want the assistant reading your actual logged sets. Read the Trunk gaps before you buy: iOS only, no Apple Watch app, no CSV export button, no exercise library with videos or instructions, and one App Store rating.

You want the app to decide every set. Pay the subscription. Fitbod at $95.99/yr, Alpha Progression at $79.99/yr, or Dr. Muscle at $399.99/yr do per-set prescription and automatic deloads that no chat assistant will do for you between sets. That is a real product, not a markup. Dr. Muscle is also the cheapest of the three to try: its 14-day trial takes no payment information, and the account drops to a permanent free plan afterwards with one AI exercise recommendation a day (source).

You are a powerlifter who wants a coached block. JuggernautAI at $34.99/mo, with the understanding that there is no free tier after the two-week trial and the whole app stops working if you cancel.

You are on Android. Not Trunk. Hevy, Fitbod, and Boostcamp all ship Android apps; Trunk has none and none is announced.

You want a mature log and no AI at all. Strong and Hevy are the two best-built trackers in this category by a distance — years of refinement, Apple Watch apps, and 109K and 91K US App Store ratings respectively against Trunk's one. Free Strong gives you 3 custom routines, free Hevy gives you 4, and both let you log unlimited workouts. If those caps bite, the one-time unlocks above end the question permanently.

If you want the wider field rather than the price sheet, we ranked the options in best AI workout apps.