FITBOD ALTERNATIVE · 6 min
A Fitbod alternative with a coach you can ask mid-workout
Looking for a Fitbod alternative because you want to know why your workout looks the way it does? Lenjo is an iPhone and Apple Watch strength app built around an AI coach you can talk to: before the workout, between sets, and after you save it.
Lenjo versus Fitbod in one paragraph
Fitbod generates your workout for you. Lenjo lets you ask about it. When a set feels wrong, you tell the coach what you feel and get cues for that exercise. When you slept badly or only have 45 minutes, you say so and today's plan changes, with the reason spelled out. It also reads sleep, HRV and resting heart rate from Apple Health, and logs your meals from a photo.
What Fitbod does well
Fitbod is a mature, well-reviewed app. It builds each session from your equipment, schedule and an estimate of how recovered each muscle group is, applies progressive overload for you, and shows a video demo for every exercise. If you want an app that decides the workout and you simply follow it, Fitbod does that job well.
If you are also weighing a plain logger, see our Fitbod vs Hevy comparison of price, plans and Apple Watch support.
Why lifters look for a Fitbod alternative
Threads from people switching apps tend to circle the same three points:
- →The session changes every day, which makes it hard to run a steady program and see clean progress on one lift.
- →It is hard to tell why an exercise, set count or weight was chosen.
- →When something feels wrong in the middle of a set, there is nobody to ask.
Ask your coach mid-workout
This is the part of Lenjo people notice first. You are halfway through Romanian deadlifts and your lower back is doing the work your hamstrings should be doing. Instead of finishing the sets and hoping, you type what you feel into the coach chat.
Below is a real exchange from one of our own sessions, translated from Chinese. The coach had already paused the RDLs. Then a cue clicked:
Lenjo coach
For the rest of today, if your lower back keeps bothering you, I'd still do the leg extensions (seated, no load on the back), and keep the glute bridges and standing pelvic tilts. None of those load the back. Hold off on the RDLs for now. Don't put your back on the line just to train legs.
You
Yep. Once I brace my core and squeeze my glutes, my lower back stops hurting.
Lenjo coach
That's it. You just found the key.
Your back settling down tells us the problem was the movement pattern: an anterior pelvic tilt plus a sagging lower back were handing the work from your glutes and hamstrings to your lower back. Once "brace + squeeze" brings your pelvis back to neutral, the load goes back to your hamstrings and glutes.
That is also the main fix for your anterior pelvic tilt, so keep it beyond RDLs: when you stand, walk and squat.
Finish the session like this, keeping that feeling:
- Dumbbell Romanian deadlift
- Remaining sets, 2 × 8 kg dumbbells × 10
- Squeeze your glutes before each rep. Don't chase depth.
- Leg extension
- 3 × 12, 24 kg
- Seated, no load on the back.
- Glute bridge
- 3 × 15, bodyweight
- Brace and squeeze; glutes drive first on the way up.
- Standing posterior pelvic tilt
- 3 × 15 s
- Practice the brace-and-squeeze feeling you found today.
Lenjo coach
If your back starts complaining again on the RDLs, shorten the range. A smaller range that feels right beats going deep and loading your back.
Three things happened in that exchange. The coach responded to a feeling you described. It kept the exercise once the cue worked, with a smaller range. And it rewrote the rest of the session around the same idea. You can ask the same way about any exercise: "my arms give out before my back on rows", "my knees cave on the last reps", "should I swap this for a machine?".
The coach works from what you describe and any photo you send. It cannot watch you lift in real time. Every built-in exercise also has an illustration and form cues you can open during the set.
Plans that follow how you recovered
Before you train, Lenjo can read sleep, HRV and resting heart rate from Apple Health, alongside your saved workouts. The coach turns that into one of four decisions for each lift: add load, hold, reduce, or swap the exercise. A night of six hours and a low HRV might mean RPE 6–7 and one fewer set per exercise.
If you want to see how that decision logic works in detail, read our guide to an adaptive workout plan.
Try it: estimate your next load from RPE
Enter your last working set and how hard it felt. The calculator estimates a load for your next session. It is a simplified version of the reasoning the coach does with more context; our RPE workout planner guide explains how to rate a set.
Next-load estimate from RPE
60 kghold
Estimated one-rep max: 80.0 kg. Rounded to the nearest 1 kg.
A rough estimate from one set (Epley formula plus reps in reserve). It does not know your sleep, soreness, or technique. Lenjo's coach reads your saved workouts and recovery data before suggesting a load.
Food in the same app
Snap a photo of a meal and Lenjo estimates the calories and logs it. Because meals and workouts live in one place, the coach can take a low-protein day or a big dinner into account when it plans. You do not need a separate calorie app to give it that context.
Run the workout on Apple Watch
With Lenjo Pro, send the plan to your watch and confirm each set on your wrist. The watch shows live heart rate and a recovery cue between sets, with a minimum rest so you do not rush. More detail is in our guide to Apple Watch recovery between sets. Logging on iPhone alone is free.
Lenjo and Fitbod side by side
| Lenjo | Fitbod | |
|---|---|---|
| Something feels off mid-set | Ask the coach in chat. It gives cues for that exercise and adjusts the rest of the session. | Exercise video demos and written form cues. |
| How the next workout is built | The AI coach reads your saved workouts and recovery signals, then explains each change. | An algorithm generates sessions from your equipment, schedule and estimated muscle recovery. |
| Recovery signals | Training log plus sleep, HRV and resting heart rate from Apple Health, with your permission. | Training log; muscle recovery can be adjusted for other activity from Apple Health, Fitbit or Strava. Its site does not describe using sleep or HRV. |
| Changing today's plan | Say it in plain words: "I only have 45 minutes and my lower back is tight." | Adjust settings such as workout duration and available equipment. |
| Food | Snap a photo to log a meal; the coach can see what you ate when it plans. | Its FAQ says Fitbod does not track calories directly. |
Fitbod details checked on fitbod.me and help.fitbod.me on Oct 9, 2026. Fitbod is a trademark of its owner; Lenjo is not affiliated with Fitbod.
Want the full picture of how an AI coach turns a plan into a logged session? See how an AI strength training plan should adapt.
FAQ
Common questions
01Can I ask Lenjo's coach about my form?＋
Yes. Describe what you feel, for example "my arms give out before my back on rows", and the coach gives cues for that exercise and can change the rest of the session. It works from your description and any photo you send. It cannot watch you lift in real time, so treat its cues as coaching based on what you tell it.
02Can Lenjo build a workout for me like Fitbod?＋
Yes. Ask the coach for a session with your goal, equipment and time. It returns a structured plan with exercises, sets, reps, load and rest that you can review, edit and start on iPhone.
03Is Lenjo free?＋
Running and logging workouts on iPhone is free, with an allowance to try the AI coach. Lenjo Pro adds Apple Watch workouts, higher AI coaching and photo-analysis allowances, and in-depth reports. The subscription screen in the app shows current prices.
04Does Lenjo work with Apple Watch?＋
Yes, with Lenjo Pro. Send the plan to your watch, confirm each set on your wrist, and see live heart rate and a recovery cue between sets. You can also train without a watch.
05Does Lenjo track food?＋
Yes. Take a photo of a meal to estimate calories and log it, or log it by hand. The coach can take your recent meals into account.
06Where is my data stored?＋
Core records stay mainly on your iPhone. The AI coach and photo analysis need an internet connection, and the relevant content is processed by third-party model services as described in the privacy policy.
NEXT GUIDES
Go deeper on training decisions
01
Adaptive Workout Plan
How the next session should change after a hard week, a bad night or a missed target.
READ GUIDE →
02
RPE Workout Planner
Record how hard each set felt, then use it to choose the next load.
READ GUIDE →
03
Apple Watch Recovery Between Sets
What your heart rate can and cannot tell you between sets.
READ GUIDE →