Arvo vs FitnessAI
Complete comparison of a live AI coach and the veteran strength algorithm. Find out which one fits your training.
Last updated: March 2026
How much does FitnessAI cost in 2026?
FitnessAI costs about $9.99/month or $59.99–$89.99/year via in-app purchase in 2026, with no functional free tier. Arvo offers a Free plan with core AI coaching and a Pro plan at €4/month with methodologies and volume landmarks. Verify the current price at checkout before subscribing.
FitnessAI is one of the longest-running AI workout apps. Since its launch on the App Store, it has built its reputation on a simple idea: an algorithm trained on millions of logged workouts that sets your exercises, reps, and weights, then adjusts the numbers as you log each session. Apple once featured it as App of the Day, and its tap-to-log interface is still one of the simplest ways to get a data-driven strength plan without thinking about programming.
Arvo takes a different approach. Instead of a fixed algorithm that hands you numbers, 20 specialized AI agents coach you through every set: they read your RIR/RPE, adjust the next set in real time, and program full methodologies such as Kuba Method, Mentzer HIT, or FST-7 with scientific fidelity. Arvo also tracks MEV/MAV/MRV volume landmarks per muscle group and imports your existing history from other apps, PDFs, or photos.
The honest difference: FitnessAI is a proven, simple progression algorithm with years of logged data behind it. Arvo is a live coach that adapts inside the workout and follows named methodologies. If you want minimal setup and steady algorithmic progression, FitnessAI is a solid pick. If you want methodology depth and set-by-set coaching, Arvo goes further.
Quick Summary
Arvo
Best for methodology-driven lifters
- Set-by-set AI coaching with RIR/RPE
- 5 training methodologies
- MEV/MAV/MRV volume landmarks
- Free plan, Pro at €4/mo
FitnessAI
Best for simple algorithmic plans
- Long track record since launch
- Algorithm trained on millions of workouts
- Very simple tap-to-log interface
- No methodologies or live coaching
Feature-by-Feature Comparison
| Feature | Arvo | FitnessAI |
|---|---|---|
| AI Adaptation Level | Set-by-set live coaching | Between-session algorithm |
| Training Methodologies | 5 (Kuba, Mentzer, FST-7, Y3T, Mountain Dog) | Generic progression only |
| Volume Tracking | MEV/MAV/MRV per muscle group | Per-exercise sets and loads |
| RIR/RPE Support | Full integration with AI | Not methodology-driven |
| Training Data Scale | Individual history + methodology rules | 5.9M+ logged workouts |
| Ease of Use | Guided chat setup | Very simple tap-to-log |
| Workout History Import | Export, PDF, or photo import | No |
| Nutrition Tracking | Fuel — macros, AI photo, barcode | No |
| Strength Benchmarks | Percentiles vs similar lifters (16 lifts) | Progress charts |
| Platforms | iOS, Android, web, Apple Watch | iOS and Android |
| Free Tier | Free plan, no card required | No functional free tier |
| Price | Free / Pro €4/mo | About $9.99/mo or $59.99–$89.99/yr |
| Beginner Friendly | Lite mode available | Simple by design |
Key Differences
Live Coaching vs Static Algorithm
Arvo adapts every set in real time from your logged RIR/RPE and performance. FitnessAI adjusts your numbers between sessions based on its progression algorithm.
Training Methodologies
Arvo implements complete systems (Kuba Method, Mentzer HIT, FST-7, Y3T, Mountain Dog). FitnessAI uses its own generic progression model with no named methodologies.
Volume Management
Arvo tracks MEV/MAV/MRV per muscle group with automatic deload triggers. FitnessAI manages sets and loads per exercise without scientific volume landmarks.
Pricing
Arvo: Free plan available, Pro at €4/month. FitnessAI: about $9.99/month or $59.99–$89.99/year via in-app purchase. Verify current prices at checkout.
Frequently Asked Questions
Is Arvo better than FitnessAI?
For lifters who want methodology-specific training (Kuba, Mentzer, FST-7), set-by-set AI coaching, and MEV/MAV/MRV volume tracking, Arvo offers more depth. FitnessAI is better if you want a simple, proven algorithm that sets your numbers with minimal setup.
How much does FitnessAI cost?
FitnessAI costs about $9.99/month or $59.99–$89.99/year via in-app purchase as of 2026, depending on the tier and promotions. There is no functional free tier. Prices vary by region, so verify the current price in the App Store or Google Play before subscribing.
Is Arvo cheaper than FitnessAI?
Yes. Arvo offers a Free plan with core AI coaching and no credit card required, and Pro costs €4/month. FitnessAI starts at about $9.99/month with no free tier. Verify the current price, currency, and billing period at checkout before subscribing.
Does FitnessAI adjust workouts during the session?
FitnessAI adjusts your sets, reps, and weights between sessions based on logged performance. It does not coach set by set inside the workout. Arvo adapts every set in real time from your RIR/RPE and performance data.
Can I migrate from FitnessAI to Arvo?
Yes. Bring your training history to Arvo as an export, a PDF, or even a photo of your plan — the chat assistant parses it so your history comes with you. The AI then calibrates to your patterns within 2–3 workouts.
Does FitnessAI support Kuba Method or FST-7?
No. FitnessAI uses its own generic progression algorithm. Arvo implements Kuba Method, Mentzer HIT, FST-7, Y3T, and Mountain Dog with proper set/rep schemes and periodization.
Which app has more training data behind it?
FitnessAI reports its algorithm is based on over 5.9 million logged workouts, a genuine advantage from its long history. Arvo compensates with a different approach: 20 specialized AI agents that reason about your individual session data, methodology rules, and volume landmarks in real time.
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