Fit4i: Gym Workout Tracker
Sets, reps, strength, recovery
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
New in 1.0.18: switch between your own routine and a built plan any time — pause targets, log on your own, come back when you want. 14 days of Pro free, no card.
Tap an exercise, type weight × reps, done. Your first set is logged in under a minute — no setup wizard, no questionnaire.
Want a plan instead? Say so on the first screen and Fit4i builds one from your recovery and equipment.
Either way, every set feeds the same 14-zone muscle map — it knows what has recovered and what's overdue.
LOG THE WAY YOU ALREADY TRAIN
Pick "I train on my own" and you land in an empty workout. Add exercises — or create your own — type weight and reps, tick the set. Next time the same exercise opens pre-filled, with "Last time: 60×8, 8, 7 · 3 days ago" right under the name. Hit every rep at the same weight? A quiet line says "All sets hit — try 62.5 kg?" — one tap to take it, none to ignore it. Rest timer and personal records: automatic.
YOUR ROUTINE, BUILT FROM WORKOUTS YOU ACTUALLY DID
Finished? One card asks "Save as a routine day?" — that's your first routine day, no builder to fill in. Save a second one and you have a split. From then on every slot carries a target: fill the rep range and the weight steps up. Three sessions in range without reaching the top? A stall line offers a swap, and swaps are remembered. Need a break from targets? Pause them; when you resume they catch up to your latest weights, never down.
THE MUSCLE MAP DOESN'T DECORATE. IT DECIDES.
Fourteen zones, each recovering from the sets you logged — weight, reps, how long ago. On your own routine it shows what you trained yesterday, what fell behind this week, and how many sets each zone got. Pick "Build My Plan" and every morning the map serves the day your body is readiest for and says why in one line. A main lift that has waited too long goes first — so your deadlift never quietly disappears.
STILL A PROGRAM, NOT A SHUFFLE
Recovery-driven training usually shuffles the big lifts away. Fit4i keeps the structure: main lifts come back on schedule. Weights and reps advance on their own. Volume climbs in waves and backs off in planned deloads — real periodization, not "add 2.5 kg forever".
YOUR SLEEP IS AN INPUT, NOT A STATISTIC
Sleep, HRV and resting heart rate come from Apple Health — or a ten-second check-in if you don't wear a watch — and they shape today's session, not next month's chart. Rough night: fewer sets, a rep in reserve. Feeling fine anyway? Say so, and the plan believes you.
IT BENDS TO YOUR LIFE
• 25 minutes instead of 60? One tap compresses the session — the main lift survives.
• Bench taken? Swap the exercise; zone and load carry over.
• Missed a few days? No guilt screen — the muscles that fell behind catch up.
• Skipping the plan today? "Empty workout" is always there — log, map and records still count it.
• Want the plan later? Switch any time — your logged weights carry over.
ALSO IN THE BOX
• Apple Watch: today's plan, set logging, rest timer and heart rate on your wrist.
• Nutrition by photo: snap a plate, get calories and protein.
• English, Deutsch, Русский, Español, Dansk. kg or lbs — gym, home, or bodyweight.
FREE FOREVER. PRO WHEN YOU WANT IT TO THINK.
Free, always: the log, your routine days with slot targets, "Last time", history, personal records, the muscle map and the check-in.
Pro adds the layer that decides for you: the auto-built program and its rebuild, the readiness ring that adjusts today's session, planned deloads (volume waves on auto-built programs), the weekly briefing with recovery, and nutrition. Your first 14 days of Pro are free, no card; if you train on your own, the 14 days start the first time you finish a workout on a saved routine day — so every day of Pro lands where Pro actually does something. The subscription renews automatically; cancel anytime in Settings.
Terms of Use: https://coach-production-8c60.up.railway.app/legal/terms
Privacy Policy: https://coach-production-8c60.up.railway.app/legal/privacy
Learn more: https://fit4i.com
Fit4i provides general fitness guidance and is not a medical service. Consult a physician before starting any exercise program.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Two roads, both directions. Switch between your own routine and a built plan whenever you like — nothing is lost either way.
SWITCH ANY TIME
- "Log on my own" and "Pause routine targets" now live in the Home menu of a built plan too
- "Build my plan" no longer switches your mode before you've paid — you keep your routine until you decide
- The pause screen keeps the check-in, the readiness ring and the muscle map in view
- Paused? Reminders stop promising a workout
STRAIGHTER TALK
- The Pro banner names the real differences and can be closed
- The end-of-trial screen promises only what Pro actually does
- A day cut short for recovery now says why
THE LOG
- Routine day names no longer double up ("Push + Legs")
- The "+step" hint stays quiet after a lighter session and on a yellow day; "Last time" marks lighter sessions
- The under-target hint for a zone now counts assistance work too
- Personal records no longer arrive in bunches, the week card stays on an empty week, and a reset streak is labelled
PULL-UPS
- New rung: Weighted Pull-Ups. At 12 reps every set the engine suggests adding weight instead of piling on reps
PRO TRIAL
- Training on your own? Your 14 days of Pro now start the first time you finish a workout on a saved routine day — so every day of Pro lands where Pro actually does something
ENGINE
- After a break, the lighter session is worked out from what you actually lifted
- A deload hits each routine day once
- Texts use real numbers ("12 days off")
- Moving to a plan, new movements get a starting weight from related exercises
- Fixed: after the end-of-trial screen, the check-in and week plan could stay closed until a restart
All 5 languages.
The developer, Mykola Tereshchenko, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mykola Tereshchenko
- Size
- 49.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 9.0 or later.
- iPhone
- Languages
English and 4 more
- English, Danish, German, Russian, Spanish
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Fit4i Pro (Yearly) $79.99
- Fit4i Pro (Monthly) $9.99
- Copyright
- © 2026 Mykola Tereshchenko
