PRO Workout tracker · iPhone & Apple Watch

The UK workout tracker that sees your food too.

Sets, reps and weight, with personal bests that update themselves. Apple Watch syncs both ways through HealthKit, so a run logged in Apple Fitness or a class in Strava lands in the same day as the lift you did at lunch.

Get NutraSafe on the App Store → See how it works

NutraSafe Pro £3.99 a month or £34.99 a year iOS only Cancel any time

● Workouts, in the app

The body diagram knows what's sore.

The recovery panel shows which muscle groups have been hit hard recently, so you can decide whether to push or rest. Recent sessions list below.

01 What's in the tracker

Six tiles,
one diary.

Every session lands in the same diary as your food, so the protein and the calories line up next to the work you did to earn them.

i

Lifts, with sets, reps and weight.

Tap in the weight, tap in the reps, tap to finish the set. The rest timer starts on its own. Same flow for squats, bench, deadlifts, dumbbell work or anything in between.

Romanian deadlift, set 3 110kg · 8 reps · RPE 8
PB
Bulgarian split squat 22.5kg dumbbells · 10 each side
3 sets
Hip thrust 80kg · 12 reps · RPE 7
4 sets
ii

Routines you can open and start.

Build your push/pull/legs or upper/lower split once. Walk into the gym, open the routine, start the session. Numbers from last time sit next to the empty boxes so you know what to chase.

Push · Pull · Legs Or your own
iii

Personal bests that update themselves.

Hit a heavier set, or the same weight for more reps, and the PB updates. No spreadsheet, no admin. The history holds every previous best so you can see the line moving.

Romanian deadlift New PB · 12 Jun · prev 105kg
110kg
iv

Apple Watch, both ways.

Start a session on the Watch, log sets from your wrist, see the rest timer count down. Heart rate streams in live. Everything you do on the Watch lands on the iPhone, and everything on the iPhone lands on the Watch, through HealthKit.

HealthKit · two-way
v

Rest timer, between every set.

Auto-starts when you finish a set. Tap to adjust if you want a longer rest. Buzzes when it's time to lift again.

02:00 Rest set 3
vi

Runs and classes show up too.

A run logged in Apple Fitness, a spin class through Strava, a kettlebell session your mate runs on Hevy: anything that writes to HealthKit lands in your diary alongside the lifts.

Outdoor run 5.4km
Spin class 45min
Lift 38min
02 Why same diary as your food matters

Protein in.
Work out.

Tracking your lifts in one app and your food in another means flicking between two screens to ask one question: did I eat enough today? Here the answer is on the same screen.

Calories you ate vs calories you burned

A lift writes calories burned to HealthKit. The food you logged writes calories eaten. Both land in the same daily summary, so the net sits in plain view rather than buried in a separate app.

Protein next to the lifting day

The day you trained legs, the diary already knows you trained. You can see the grams-of-protein bar against your target without opening anything else, and decide whether dinner needs another egg.

NHS strength target, in the weekly chart

The NHS recommends strengthening activities on two days a week alongside cardio. The weekly view shows how many strength sessions you got in, so you can see whether you hit that target without doing the maths.

Reactions on the same diary too

If a Tuesday session keeps leaving you wiped on Wednesday morning, the reaction log and the workout log sit on the same week. The data is there for a coach or a physio to read; we don't grade it.

03 A lifting day, on a page

What a session
looks like.

A lower-body day, logged on the Watch and finished on the phone. Four lifts, one new PB, rest timer between sets, calories burned written back to HealthKit.

One Tuesday evening, in the diary view.

You opened the Lower Body routine. Sets and reps pre-filled from last week so you knew what to chase. Rest timer started after each set. Heart rate streamed in from the Watch. The session closed, calories landed, the PB shifted.

i. Open the routine on the Watch. Lower Body · 4 lifts · 38 min planned.
ii. Log each set as you go. Weight, reps, optional RPE. Rest timer starts on its own.
iii. Finish on the phone. Session summary, calories burned, PB if you set one.
iv. It lands on today's diary page. Next to your food, your protein, your weekly strength count.
04 Questions people ask

Frequently
asked.

The questions we see from lifters, runners, home-gym folk and the people who just want a log they can actually keep up with.

What is a workout tracker app?

A workout tracker logs exercises, sets, reps and weight as you train. It holds the history so you can see what you did last week, tracks personal bests, and keeps the sessions consistent. Ours also includes a rest timer between sets, an Apple Watch companion, and HealthKit so external workouts (Apple Fitness, Strava, third-party apps) show up alongside your lifts.

Can I use the tracker with Apple Watch?

Yes. Start the session on the Watch, log sets from your wrist, see the rest timer count down, see live heart rate. Watch and iPhone sync both ways through HealthKit so finishing a set on either device updates the other.

Does the tracker work without signal in the gym?

Yes. Sessions log to the device first. When you reconnect, the data syncs up. Mobile signal in the squat rack isn't a prerequisite for keeping a record.

Is the workout tracker free?

The download is free. The workout tracker itself sits inside NutraSafe Pro at £3.99 a month or £34.99 a year on iOS. The free tier covers food logging (up to 25 entries a day) and barcode scanning. Workouts, AI Coach, fasting and the suspected-triggers analysis are part of Pro.

Does the tracker write my programme for me?

No. We log what you did: sets, reps, weight, RPE, rest, and chart it over time. We don't generate or suggest specific programmes. If you want one, a coach or a programme like the NHS Strength and Flex plan is the right fit.

Can I track running or cycling here?

The lifting log is ours. The running log lives where you record the run (Apple Fitness, Strava, Nike Run Club). Anything that writes to HealthKit lands on the same diary day, so a Tuesday run and a Wednesday lift sit on the same week without you doing the joining.

What happens if I miss a week?

Nothing breaks. The tracker doesn't streak-shame. The chart has a gap; you carry on next session. If you're working to the NHS two-strength-sessions-a-week target, the weekly view shows you where the gap was so you can plan around it.

Log every set.
Keep chasing the PB.
The food side joins in.

Get NutraSafe on the App Store →

Sets, reps, weight, rest timer, personal bests, Apple Watch both ways. NutraSafe Pro £3.99 a month or £34.99 a year on iOS. Cancel any time inside your Apple subscriptions.

iPhone · iOS 17 · Apple Watch optional
110kg