iPhone · TodayToday’s session open: zone, duration, phases and Borg scaleAndroid · WeekProgress of the week and the program, equipment and volumeiPhone · CalendarThe month of your 20-week cycle, sessions colored by zoneAndroid · Session logSessions done, skipped or moved (Premium)iPhone · Load and formFitness, fatigue and form, with the forecast for the days ahead (Premium)Android · MacrocycleThe 20 weeks: base, build and recovery (Premium)iPhone · AthletesPro Coach: all your athletes and who trains today or tomorrowAndroid · AgendaPro Coach: everyone’s sessions, day by dayiPhone · StudioPro Coach: your name, studio and logo on PDFs; backup of all athletes
Real app screens, with sample data.
Features
Grounded in physiology, built for real training
Forjum Cardio turns your profile and measured values into useful zones and weeks you can follow.
Zones made for you
Zones from heart-rate reserve (Karvonen) and max heart rate, refined by your LT1/LT2 thresholds once you measure them with a test.
11 machines and sports
Exercise bike, elliptical, stepper, treadmill and road running with level, cadence, speed or watts for each zone; swimming, rowing, walking, Nordic walking, trail and cross-country skiing by heart-rate zone.
Profile and measured values
Age, weight, resting and measured max heart rate, VO₂max and field tests drive the plan. If you take medication that changes your heart rate, zones adapt and the app reminds you.
Sessions ready to follow
Each session shows a summary, its phases (warm-up, main block, cool-down), the zone in beats per minute and the Borg scale.
Privacy first
Profile and plan stay on your phone, with no account. Apple Health and Health Connect only with your permission. Read the privacy policy.
Print and PDF
Print or save as PDF the week, the mesocycle or the whole cycle (Premium); with Pro Coach, with your own logo.
Workouts, load and form
Import workouts from Apple Health or Health Connect; with Premium the app compares them with your plan, tracks load and form and adapts the weeks ahead.
Race and periodization
20 weeks in 4-week blocks with a recovery week; choose the method and your race date, with the taper on the right days.
Reminders and backup
If you turn them on, an evening summary before every training day; backup to a file to move to a new phone.
Plans
Free, Premium or Pro Coach
The app is free to download; annual subscriptions add the rest and are managed through the App Store or Google Play.
To get started
Free
Today’s session and this week’s plan
Month calendar preview
Zones, equipment and threshold tests
Profile from Apple Health or Health Connect
Reminders and backup to a file
Annual subscription
Premium
Session log: done, skipped, rescheduled
All 20 weeks and the macrocycle
Load, form and workout analysis
Print, PDF and calendar export
In the free version, Premium pages show sample data
For coaches
Pro Coach
Everything in Premium
Several athletes on one phone, no cloud
Agenda with everyone’s sessions for the week
PDFs with your name, studio and logo
Evening reminder with names and backup of all athletes to a file
Prices and any free trial are shown in the store and in the app. Subscriptions renew automatically and can be cancelled in your store settings.
Built for
Built for
Structured cardio for people who want clarity, not guesswork.
Running and trail
Cycling and indoor bike
Gym and home
Coaches and their athletes
How It Works
How It Works
Three steps to consistent training: no waiting, no account, just progress.
1
Answer a few questions
Age, weight, heart rate, goal and equipment; values from Apple Health or Health Connect import in one tap.
2
Get your plan
The app builds 20 weeks of zone-based sessions with progression and recovery weeks; you choose the method.
3
Train and track progress
Open Today, follow the session and mark it done: you always see where you are in the cycle.
Why Forjum Cardio?
Why Forjum Cardio?
Designed for athletes, coaches and anyone who wants structured training.
No account, ever
Your data stays on your phone
Core features are free
Four tabs: Today, Calendar, Progress, Profile
For beginners and experienced athletes
Works without a connection
FAQ
Frequently Asked Questions
Everything you need to know before you start.
What does Forjum Cardio calculate?
Your heart-rate zones and a 20-week plan, session by session: zone, duration, structure and targets for your machine. It uses your profile and measured values (resting and max heart rate, VO₂max, LT1/LT2 thresholds if you have them).
Can I import data from Apple Health or Health Connect?
Yes, with your permission: date of birth, height, weight, resting heart rate, blood pressure and VO₂max for your profile, plus workouts with heart rate; sleep and HRV when available. The app only reads, it never writes. With Pro Coach, the phone’s data only go into its owner’s profile.
Does my data leave my phone?
No: profile, plan and workouts stay on the device and never reach Forjum. Only the files you choose to share leave it (backups, PDFs). See the privacy policy.
What do Premium and Pro Coach include?
Premium unlocks the session log, all 20 weeks, load and form, workout analysis, printing and PDF. Pro Coach adds several athletes on one phone, everyone’s agenda, PDFs with your logo and reminders with names. Both are annual subscriptions managed by the App Store or Google Play.
How do I move to a new phone?
There is no cloud: in Settings use “Export backup” (with Pro Coach, from Studio, the backup of all athletes), keep the file wherever you like and restore it on the new phone. Your subscription comes back with “Restore purchases”.
How do I cancel my subscription?
In the subscription settings of the App Store or Google Play; in the app, use “Manage subscription”. It stays active until the end of the paid period.
Which devices are supported?
iPhone (App Store) and Android (Google Play), on the system versions listed in the stores.
Is this medical advice?
No. Forjum Cardio is designed for adults planning exercise; with medication or health conditions it shows warnings and limits intensity, but it does not replace your doctor. Check with them before starting a new program.
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