Plan the week.
Execute the day.
Lock it in.

Lock That Fitness In is a workout tracker, macro log, and supplement stack in one — so the whole day lives in one place and nothing gets forgotten. iPhone now; Android planned for Q2 2027.

Tell me when it is on

One email when the app is out, nothing else. Remove yourself any time by emailing support@ltfi.global. See the privacy policy.

Tedious tracking made simple.

Currently in closed beta. Want in now? Email us.

The Today screen: a nutrition ring at 450 of 1,815 calories, then cards for training, supplements, water and steps, and a morning section listing body weight.A gold Locked In card reading Double Record: heaviest weight 60 lb, was 40 lb; best estimated one-rep max 72 lb, was 49 lb.

Plan ahead

Decide the week on Sunday, not at the rack.

Lay the week out in one pass — training days, rest days, the deload when it comes due. Each planned session waits on the day it belongs to, already loaded, so the decision is made before you are standing in front of a barbell making it.

  • Blocks run in weeks — week 1 of 4, with the deload marked.
  • Every day carries its own state: planned, done, or skipped.
  • A week that worked can be repeated as it stands.
The weekly planner showing week 1 of 4 with a deload prompt, and Sunday, Monday and Tuesday each listing their planned, done or skipped sessions.

Execute the day

One list, and everything on it locks at midnight.

Training, supplements, water, steps, the weigh-in, the food — one checklist with a count that only goes up. Items lock as you complete them. At midnight the day closes, and the week's record is what you actually did rather than what you meant to do.

The evening section of the Today screen: an evening supplement stack, a session in progress at 3 of 36 sets logged, and a note that everything locks at midnight in 24 minutes.
The day closes itself. Nothing to file at the end.
A July calendar with a gold padlock on each completed day, above a five-week streak and 39 sessions locked in.
A locked day is a padlock on the calendar. Five weeks, 39 sessions.
Beat a lift you have done before and the record lands on the set that earned it.

Log the work

The logger gets out of the way.

Weight and reps behind steppers big enough for chalked hands. Supersets kept in rounds, left and right sides tracked apart, rest that pauses when you do. The plate maths is done for you, and the bar is drawn the way you will actually load it.

The logger mid-session: superset A of three rounds, a cable lateral raise on the left side with rest paused, weight and rep steppers, and a Lock it in button.
Supersets, left and right sides, rest that pauses.
The plate calculator showing 345 lb on a 45 lb bar, drawn as loaded plates, with the per-side breakdown 45 + 45 + 45 + 10 + 5.
345 lb, drawn plate by plate, per side.
A hold timer counting down inside a teal ring, with a Hold to stop button beneath it.
Timed holds run the clock and write the set down themselves — the RPE prompt is already waiting when it ends.

Know the load

Balance you don't have to keep in your head.

Every set you log feeds a per-muscle count across the last seven days, front and back. Under-trained muscles surface on their own, with the number that says so — and they feed straight into the next session instead of into a note you will not re-read.

Build a workout to hit these gaps

The app's own prompt, once the gaps are visible.

A front and back body map in teal with a Room to add reading, six muscles below minimum and none over maximum, above per-muscle set counts for upper chest, calves and mid traps.

Never wonder again

Did I take the creatine this morning?

The stack is grouped by when you take it — morning, afternoon, evening — with the dose written down once and the days it applies to written next to it. Macros work the same way: presets for the food you actually eat, so logging lunch is a tap rather than a search.

A supplement stack listing fish oil, multivitamin, NAC, potassium, taurine and TUDCA with their doses, then an afternoon group and an evening group.
Dose and timing written down once, not remembered daily.
The nutrition screen showing 1,365 calories and 145 g of protein left for the day, carb, fat and fibre bars, and quick-add presets for fruit and meals.
Presets for the food you actually eat.

Steal a workout

Run someone's proven block instead of an algorithm's.

When someone you follow locks in a session, it arrives with the sets they actually did — not a template of what they intended. Take it into your own plan and it is yours: the same exercises in the same order, loaded with the numbers they hit.

  1. Someone you follow locks in a session.
  2. It lands in your feed with the real sets.
  3. Add it to your plan and train it.

A record of the work, not the body.

One photo per session, if you want one. Rendered with your lift summary, stored on your device.

Optional. Local. Skip it and the log still works.

One app, whole day

Four apps and a note file, replaced.

Training, macros, supplements, sleep and body weight live on one day's screen — planned in advance, logged as you go, closed out at midnight.

Tell me when it is on

One email when the app is out, nothing else. Remove yourself any time by emailing support@ltfi.global. See the privacy policy.

Tedious tracking made simple.

iPhone now. Android planned for Q2 2027. Want the closed beta now? Email us.

A share card carrying a gold seal reading Lock That Fitness In, five week streak, above a rail of locked weeks and a count of 39 sessions.

Everything else it does

  • Plate calculator

    The bar drawn the way you load it, per side, barbell or EZ-bar.

  • Timed holds

    Planks and carries run a clock and log themselves when it stops.

  • Supersets and rounds

    Grouped exercises kept in rounds, with rest that pauses when you do.

  • Left and right sets

    Sides tracked apart, so an imbalance is visible instead of averaged away.

  • Deloads on schedule

    Blocks run in weeks and the deload is marked before you have to think about it.

  • Sleep and recovery

    Sleep, energy and soreness move the next session's set count up or down.

  • Weekly muscle load

    Every set counted per muscle across seven days, front and back.

  • Macro presets

    The food you actually eat, saved once, logged with one tap.

  • Supplement stacks

    Grouped by morning, afternoon and evening, with the dose written down.

  • Streaks and records

    Locked days build a week; beaten lifts surface as records on the set.

  • Shared workouts

    Send a session or a template by link, or take one from your feed.

  • Coach handoff

    Export a structured summary of your training to hand to a coach.

  • Apple Health

    Reads body mass, sleep, macros and steps. Read-only — it writes nothing back.

  • Custom exercises

    Add your own movements when the library does not have the variant.

Questions

Do I need an account?

Yes. The account is how a log survives a reinstall or a new phone, and it is what the shared workouts and the friend feed are built on.

Which devices does it run on?

iPhone today. An Android version is planned for the second quarter of 2027. There is no web version.

Does it read Apple Health?

It can read body mass, sleep analysis, dietary macros and step count, with your permission and read-only — it does not write anything back. The full list is in the privacy policy.

What does it cost?

Nothing during the beta, and no part of the beta sits behind a paywall. A paid tier is planned for later; it is not built yet.

What happens to my data?

What is collected, who processes it, how long it is kept and how to delete it are all set out in the privacy policy and the consumer health data policy.

Lock That Fitness In