The Prime Edge Systems mark: a stylised P and E forming a barbell.

Free. Local-first. No account.

Everything you track, on your own device.

Workouts, food, body measurements, photos, lab results and clients — in one application that never sends any of it anywhere.

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Version 1.0.1, for Windows, Linux and Android.

799 exercises in the bundled library
660,644 USDA foods in the download
82 muscles the library maps movements to
0 bytes sent anywhere by default

What it does

Workout logging

Log sets as you go, with a rest timer, personal records and a progression suggestion based on what you actually lifted.

Food diary

660,644 USDA foods, searchable offline, with servings, your own recipes, quick macro entries when that is all you want to log, and a fasting timer. Copy a meal or a whole past day onto today. A seven-day rolling average sits beside the day's total, taken over the days you actually logged and saying how many that was. Water too, against a goal you set — there is no default, because how much a body needs depends on size, diet, activity and climate. Whole and basic foods and 646,950 branded and packaged products are all in the download and all searchable the first time you open the app — nothing to switch on, nothing to fetch.

Progress

Twenty-two measurements including blood pressure and resting heart rate, each with a chart, its history, and a note on how to take it. BMI, resting calories and total daily calories are worked out from those measurements and nothing else — each naming its equation, saying what it is not for, and refusing rather than substituting when an input is missing. Body fat is estimated from the tape measurements and labelled as an estimate; type your own in and the app never overwrites it. Mark a photo as your “before” and export it beside your latest, with the measurements from both dates and nothing cropped or brightened to flatter the comparison.

An exercise library

799 movements with cues, muscle targets, equipment requirements and research notes that cite their sources.

Plans

Build the days you train and the sets on each — straight sets, pyramids, drop sets, supersets — written out as real numbers.

Lab results

Type in a panel from a report. The app records what your laboratory printed — it supplies no reference ranges of its own.

Reports

Training, nutrition and body summaries over any period, plus energy in against an estimated energy out with your weight trend beside it, where each goal stands, and a suggested calorie target worked out from what you actually logged — shown with its arithmetic, and applied only if you choose it. Exported as a real PDF you can print or hand to a coach.

Tools

Interval timer, stopwatch, plate calculator, one-rep-max estimates, body calculators, pace and unit conversion.

Coaching

An optional second workspace for clients, sessions, notes, their medical file, service plans, invoices with a real PDF, payments you have received, enquiries and documents — kept strictly separate from your own training. Feedback goes to a client as a file you send yourself: there is no server in the middle, no payments are processed, and a private note can never end up anywhere.

Medical

Conditions, allergies, intolerances, injuries and medications — the dose, the times of day, and a reminder if you want one — with your own notes beside them. Nothing recorded there changes a calculation — there is no published figure for what a given condition does to a given person's metabolism, so the app does not invent one, and it says so on the screen rather than only in the source.

Your data, in your hands

A backup is one file you choose the location of. There is also a plain CSV export for reading everything in a spreadsheet. Neither is uploaded anywhere, and the app says which of the two you can restore from.

What it looks like

Unretouched screens from the Android and Windows builds, of the same fictional profile. Pick a platform, pick a screen, and click any screenshot to see it full size.

The Today screen: a greeting and date, a training card showing the last session was three days ago with a Start button, food today reading 2316 of 2400 kcal, a seven-day average of 2517 kcal a day across six of the last seven days, water at 1.3 of 3 litres, and two medications due at 06:30 and 08:00. — **Today**The day in front of you: the last session, food against your own target, the week's average beside it, water, anything you take, and any goal in progress.

The Today screen on Windows: the navigation rail down the left, and training, food, this-week-so-far, water, medication and body weight cards laid out across the width of the window. — **Today**The day in front of you: the last session, food against your own target, the week's average beside it, water, anything you take, and any goal in progress.

The Train screen: a card to start an empty workout, links to Plans and to the exercise library of 799 movements, and a list of recent workouts with their dates and durations. — **Train**Start an empty session, open a plan, or go to the library. Recent workouts sit underneath.

The Train screen on Windows: start, plans and exercise library cards across the top, and the full list of recent workouts with their dates and durations below, all without scrolling. — **Train**Start an empty session, open a plan, or go to the library. Recent workouts sit underneath.

A finished workout: 66 minutes, 3 exercises, 9 working sets, 3615 kg of volume, then each exercise with the load and reps of every set written out. — **Workout review**What you did, written out as numbers: duration, working sets, volume, and the load and reps of every set.

A finished workout on Windows: duration, exercises, working sets and volume across one row, then each exercise with the load and reps of every set. — **Workout review**What you did, written out as numbers: duration, working sets, volume, and the load and reps of every set.

The Nutrition screen for a single day: 2316 of 2400 kcal with protein, carbohydrate and fat bars against their targets, then breakfast, lunch and dinner with each food, its serving and its macros. — **Food diary**The day's meals against the targets you set, with the macros of every entry from the bundled USDA database.

The Nutrition screen on Windows: the day’s calories and macro bars across the top, then breakfast, lunch and dinner with every food, its serving and its calories in one view. — **Food diary**The day's meals against the targets you set, with the macros of every entry from the bundled USDA database.

A body weight chart over three months showing a downward line, labelled with the change in range, a trend of minus 0.5 kg per week fitted to 25 readings, and the range covered, followed by every individual reading. — **Body weight**Your readings plotted, with the trend line and the number of readings it was fitted to stated on screen.

Body weight on Windows: a wide three-month chart with the trend line, the change in range and the number of readings, followed by the individual readings. — **Body weight**Your readings plotted, with the trend line and the number of readings it was fitted to stated on screen.

The Measurements tab with BMI 26.2, BMR 1788 kcal and TDEE 2771 kcal across the top, naming the Mifflin-St Jeor equation and the activity factor used, and below them body weight, body fat, waist, chest, hips and both biceps, each with a sparkline. — **Progress**Measurements, photos, goals, lab results and your medical record, each over whichever period you pick. Body fat is worked out from the tape measurements above it, and says that it is an estimate.

The Measurements tab on Windows: BMI, BMR and TDEE across the top, a period selector including a custom range, and each measurement on its own row with a sparkline and a field to record today's reading without leaving the screen. — **Progress**Measurements, photos, goals, lab results and your medical record, each over whichever period you pick. Body fat is worked out from the tape measurements above it, and says that it is an estimate.

The Medical tab: conditions, intolerances and medications with their dose and the time of day they are taken, and a note at the bottom saying the application does not adjust any calculation because of anything recorded here. — **Medical**Conditions, allergies, medications and what you take them for, kept with the rest of your record. **None of it changes a number.** There is no published figure for what a given condition does to a given person's metabolism, so the application does not invent one.

The Medical tab on Windows: conditions, intolerances and medications grouped under headings, each medication showing its dose and time, and the statement that nothing recorded here changes a calculation. — **Medical**Conditions, allergies, medications and what you take them for, kept with the rest of your record. **None of it changes a number.** There is no published figure for what a given condition does to a given person's metabolism, so the application does not invent one.

A report over three months: observations such as 2.5 sessions a week counted across 91 days, food logged on 13 of 91 days, and a bench press stall, each with the count it came from, followed by training totals and an Export PDF button. — **Reports**Counts taken from your own records, each saying what it was counted over, and a PDF if you want one.

A report on Windows: the observations the app counted, each with the figure it came from, and the training totals and volume-by-muscle bars visible underneath at the same time. — **Reports**Counts taken from your own records, each saying what it was counted over, and a PDF if you want one.

The exercise library: a search field over 799 exercises and an alphabetical list, each row showing the movement pattern, the level and the impact. — **Exercise library**799 movements, each tagged with its pattern, level and impact, searchable by whatever you call it.

The exercise library on Windows, titled and with a back arrow: a search field over 799 movements and an alphabetical list showing pattern, level and impact. — **Exercise library**799 movements, each tagged with its pattern, level and impact, searchable by whatever you call it.

The Arnold Press page showing an illustrated figure pressing two dumbbells overhead, with playback controls stepping through the frames of the movement. — **Exercise detail**An illustrated demonstration for the movement, with the muscles worked, the equipment and the set-up underneath.

The Arnold Press page on Windows: the illustrated demonstration down the left at the height of the window, and the muscles worked, equipment, set-up and instructions in a column to the right. — **Exercise detail**An illustrated demonstration for the movement, with the muscles worked, the equipment and the set-up underneath.

The Tools screen listing an interval timer, stopwatch, plate calculator, one-rep max estimates, body calculators, pace and speed, and a unit converter, each with a one-line description. — **Tools**The everyday arithmetic of training, including a one-rep max that shows the spread between formulas rather than one figure.

The Tools screen on Windows, listing the interval timer, stopwatch, plate calculator, one-rep max estimates, body calculators, pace and speed, and unit converter. — **Tools**The everyday arithmetic of training, including a one-rep max that shows the spread between formulas rather than one figure.

The Knowledge screen: searchable articles grouped under Getting started and Training principles, each carrying an evidence label such as Established or Moderate beside its title. — **Knowledge centre**Training and nutrition explained, with the strength of the evidence labelled on every claim.

The Knowledge screen on Windows: searchable articles grouped by topic, each with an evidence label such as Established or Moderate beside its title. — **Knowledge centre**Training and nutrition explained, with the strength of the evidence labelled on every claim.

What it does not do

There is no server, so there is nothing to leak.

No account. No sign-up. No analytics, no telemetry, no crash reporting, no advertising, no tracking. The application makes no network request at all — not by default, and not on request either. There is no switch, because there is nothing to switch off: the Android build does not even ask for permission to use the network.

Your workouts, food, measurements, photos, medical notes and lab results are stored in a database on your device that only this application reads. Backups go where you put them.

No account No sign-up No analytics No telemetry No crash reporting No advertising No tracking No subscription

Where the numbers come from

Anywhere the application estimates something, it says so, names the method, and shows the disagreement between methods rather than one confident figure. Where research supports a claim, the citation is on screen. Where it does not, the application says that instead of inventing one.

Energy expenditure is offered through several published equations at once, so the spread between them is visible.
One-rep-max estimates list every formula and the range they cover.
Lab reference ranges come from your laboratory, never from the app.
Averages are taken over the days you actually logged, never over days you did not.

Free, and staying that way

Prime Edge Systems costs nothing, has no subscription, no paid tier, and no feature held back. If it is useful and you want to put something toward it, there is a donation link — and nothing in the application changes whether you use it or not.

Support the project

One-off, entirely optional, and it unlocks nothing — because there is nothing locked.

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