Trains You as One Athlete
Most apps handle lifting or cardio. FitSum coaches both, and lets each one adjust based on the other.
Launching soon · iOS & Android
Lifting and cardio, coached together.
FitSum tracks your strength training and your running or riding, and each one adjusts based on the other. Train legs hard and your next run gets lighter. Ride hard and your next squat session does too. For people who train more than one way.
Download on theApp Store
Get it onGoogle Play
Coming Soon
Free to use. Premium from £7.99/mo.
FitSum
Leg Day
STRENGTH
Back Squat
4 × 5 · 100kg
Romanian DL
3 × 8 · 80kg
Walking Lunge
3 × 12
Weekly volume
FitSum
Today
COACH NOTE
Lighter session today — your strength training has been heavy this week.
Best match
Zone 2 · 35 min ride
Try something new
Tempo intervals · 25 min
Quick option
Easy walk · 15 min
FitSum
Zone 2 Ride
CARDIO
Heart rate
142bpm
Zone 2 · Aerobic
24:12
Time
8.4 km
Dist
19.6
km/h
Auto-scaled today
Volume ↓ 15% (heavy legs yesterday)
Why FitSum?
One app where your lifting and your cardio inform each other.
Your Leg Day Affects Tomorrow's Run
Train hard in the gym and your next cardio session is scaled back automatically. Run hard and today's lifting volume adjusts too, based on which muscles overlap between the two.
Suggests a Workout, and Tells You Why
There are always three suggested workouts: your best match, something new, or something quick. Each one comes with a plain-language reason, like 'you haven't trained legs in 5 days.'
See What's Ready to Train
Tracks recovery for each muscle group based on your training load and how long it's been since you last trained it. See today's status for every muscle group, free.
Cares About the Other 23 Hours
Activity Points aligned to World Health Organisation guidelines, plus reminders to get up if you've been sitting too long. FitSum doesn't stop paying attention once you close it.
Works on Your Wrist Too
A dedicated Apple Watch app tracks your workout and heart rate, syncing straight back into your training history on your phone.
How FitSum coaches strength and cardio together
A closer look at how the two disciplines stay in sync, how the coaching shows its reasoning, and how you track progress.
Strength and Cardio, Talking to Each Other
FitSum compares which muscle groups and movement zones overlap between sessions. Log a heavy squat session and your next run gets scaled back automatically. It works both directions: a hard run reduces your leg volume in the gym, tapering off as you recover. When your strength training goes into a deload week, your cardio gets pulled in too so the two plans stay in sync.
FitSum
Tomorrow's Plan
Cross-modality adjust
Lighter session today - your strength training has been heavy this week.
Quads40% ready
Hamstrings55% ready
Glutes30% ready
Calves80% ready
Coaching That Shows Its Reasoning
The strength side tracks your training type, recent performance, and effort level to prescribe weight, reps, and when to deload, including a gradual ramp-back if you've had time off. The cardio side coaches through heart rate zones when you have a monitor, or effort when you don't, building your aerobic base before adding intensity. Every recommendation comes with its reasoning attached, like 'you haven't trained legs in 5 days' or 'this matches your current goal.'
FitSum
Why this workout?
Push Day · 45 min
- You haven't trained chest in 4 days
- Matches your current strength goal
- Recovery is high (8.2/10)
- Fits the 45-minute window you set
HR zones (last ride)
Z1
20%
Z2
55%
Z3
15%
Z4
8%
Z5
2%
Activity Points, Movement Breaks, and Everyday Goals
Activity Points measure your total weekly effort against World Health Organisation physical activity guidelines, so your targets are based on public health evidence. Alongside your workouts, FitSum tracks movement breaks throughout the day and reminds you when you've been sitting too long.
FitSum
This Week
Activity Points
128/ 150 WHO
M
T
W
T
F
S
S
MOVE REMINDER
You've been sitting for 52 min. Time for a 2-minute break.
See How Your Body Is Changing
Body measurements with trend arrows, weekly progress photos with a timeline slider, and charts for exercise performance (weight, volume, estimated 1-rep-max) over custom date ranges. Muscle Readiness shows recovery per muscle group so you know what's ready to train.
FitSum
Bench Press
Estimated 1-rep-max
112.5+8.2 kg
Chest
+3.1 cm
Waist
-2.4 cm
Arms
+1.2 cm
Thighs
+2.0 cm
Why One App Instead of Two
Most people training seriously end up juggling a strength app and a separate cardio app, and the two have no idea the other exists.
Two apps today
Strength app
£3–16
Cardio app
£9–12
Combined
£12–28
vs
One app, FitSum
FitSum
£7.99
You save
up to 70%
One subscription instead of two - and the two disciplines are actually coached together.
Based on published 2026 UK monthly pricing for standalone apps.
| Feature | FitSum | Strength app | Cardio app |
|---|---|---|---|
| Strength + cardio coached together, cross-aware | |||
| Explains why each workout was recommended | |||
| Movement break / all-day activity tracking | |||
| Evidence-based (WHO-aligned) activity goals | |||
| GPS route tracking, privacy-first maps | Varies | ||
| Body measurements & progress photos | Varies | ||
| Full data export | Varies | Varies | |
| Generous free tier, no forced trial | Varies | Varies |
Free to Use. Premium When You Want More.
No trial, no time limit on the free tier. Upgrade only for the extras you actually want.
Free Free forever
£0
Log every workout, track GPS routes, hit your activity goals, and see today's muscle readiness. No trial timer.
PremiumLifetime £129.99
£7.99
/month
or £49.99/year (save ~48%)
Unlimited history, advanced coaching options, full video export, and every deep-dive analytic.
| Feature | Free | Premium |
|---|---|---|
| Workout logging (all types, supersets, timers, audio dip during rest) | Unlimited | Unlimited |
| GPS route tracking & maps | ||
| Activity Points, steps & movement break tracking | ||
| Health platform sync (HealthKit / Health Connect) | ||
| Streaks & badges | ||
| Full data export (GDPR) | ||
| Workout recommendations | Best match | + Try Something New & Quick options |
| Workout history | 14 days | Unlimited |
| Progress trends & charts | 30 days | 90 days, yearly & all-time |
| Progress photos | Last 2 weeks | Unlimited history |
| Body & measurement history | 30 days | Unlimited |
| Custom exercises | 3 | Unlimited |
| Custom routines | 2 | Unlimited |
| Custom equipment & measurement types | — | |
| Bluetooth heart rate - live reading | — | |
| Bluetooth heart rate - zones, calibration, HRR analytics | — | |
| Video export - shorter / watermarked | — | |
| Video export - full length, no watermark | — | |
| Exercise target presets | — | |
| Category allocation editing | — | Full control |
| Advanced training settings (deload preference, rep-range overrides) | — | |
| Muscle Readiness - today's status per muscle group |
Free and Premium both available when FitSum launches. Jump to the store badges.
No big-tech location sharing
Routes use open-source maps, not a location-data pipeline.
Export or delete anytime
All your data, in JSON or CSV, whenever you want it gone or want to leave.
GDPR-compliant, EU-hosted
Built in Britain, hosted on EU servers.
Ready to Train Like It's One Sport?
FitSum is launching soon on iOS and Android.
Download on theApp Store
Get it onGoogle Play
Coming Soon