Lyfta vs Sixnity
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lyfta
This app helps gym-goers track their workouts, build custom routines, and monitor strength progress. It features a large exercise library with video guides, social features to connect with friends, and motivational challenges. Users can log sets, reps, weight, and PRs to achieve their fitness goals.
- Workout logging
- Custom routine builder
- Progress tracking
- Exercise library with videos
- Social features and challenges
- One-rep max calculator
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Join over 7 million gym and fitness enthusiasts and lift more with Lyfta – the free workout tracker, gym log, and strength training planner. Log your workouts, build routines, and track progress so you can focus on what matters most: getting stronger. What Our Users Are Saying: • "I've tried probably 10 different gym apps over the years, and none of them clicked for me until Lyfta. It's crazy how much is available for free, from the unlimited custom free routines to their massive exercise library. It just has everything you need to actually stick with it." – Ryan • "I love how simple it is to plan my workouts in Lyfta. I used to feel lost at the gym, but the guided exercises keep me on track. And seeing my progress with the stats has me getting stronger every single week. It's so motivating!" – Kady • "Lyfta has made a huge difference in my consistency. I've never been able to stick with a routine until now. Seeing my friends' workouts and jumping into the community challenges gets me excited to come back, and I've honestly made some serious gains since I started." – Rojaas Why choose Lyfta? • Free, simple, and ad-free workout tracker • Create and customize weightlifting programs & gym routines • Track progress in strength, volume, sets, reps, and PRs • Stay motivated with friends, challenges, and milestones Powerful Gym Workout Tracking • Log sets, reps, weight, RPE, and notes in seconds • 5,000+ exercises with HD video guides for perfect form • Build unlimited custom programs or follow proven ones like StrongLifts 5x5, nSuns, GZCL, Push/Pull/Legs, Rp Hypertrophy, German Volume Training, and more. Note: Lyfta is not affiliated with, endorsed by, or sponsored by any of these gym programs. • Add your own custom lifts with muscle groups & equipment • Track advanced sets: warm-ups, drop sets, supersets, and failure sets • Auto rest timers keep your sessions efficient • Built-in One-Rep Max calculator for all major lifts Stay Motivated & Connected • Share workouts, routines, and progress with friends • Follow your training partners and cheer them on • Monthly strength challenges and global leaderboards • Streaks and milestones to celebrate every achievement • Privacy controls: choose public or private profile Integrations & Compatibility • Apple Watch support for live workout tracking • Quick widgets and shortcuts for faster logging • Sync with Apple Health and Strava, • Seamless data sync across all devices If you like Lyfta, try Lyfta Pro free for 14 days! Unlock advanced analytics, expert programs, and progression tools to hit new personal bests. If you choose to purchase Lyfta Pro, payment will be charged to your Apple account, and your account will be charged for renewal within 24-hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the App Store after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Whether you’re starting your first strength program, building muscle, or chasing new personal records – you belong here. Download Lyfta today, log your training, and reach your goals faster. Privacy Policy: https://www.lyfta.app/privacy Terms of Service: https://www.lyfta.app/terms
Sixnity
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Sixnity: Fitness & AI Coach The intelligent AI fitness coach for personalized gym programming and tracking Train smarter, eat better, and live healthier with Sixnity - the AI-powered personal training platform that builds your workouts, plans your meals, and connects you with a real human coach. Every plan adapts to your body, your goals, and your life. New to the gym and not sure where to begin? Hitting a plateau and need a smarter approach to break through? Struggling to eat right without spending hours counting calories? Want a real coach guiding you without the expensive price tag? Looking for one app that handles training, nutrition, and health together? Sixnity has you covered - from day one to your best performance yet. AI Workout Programming: Tell Sixnity your goal, your fitness level, and your available equipment, and the AI builds a fully personalized training plan. As you log sessions, the plan evolves with your performance and recovery data so you are always training at exactly the right intensity. Snap Your Meal, Know Your Nutrition: No more manual logging. Photograph any meal and Sixnity's AI instantly identifies food items, estimates portions, and calculates your full nutritional breakdown - calories, protein, carbs, fat, fibre, and more - then compares it against your daily goals. Personalized Meal Plans & Recipes: Get a weekly meal plan built around your diet type, allergies, budget, and region. Every meal comes with a step-by-step recipe, ingredient quantities, prep time, and a smart grocery list, organized and ready to shop. Real Human Coach: Your assigned coach sees your full profile, progress, and health data, then designs and delivers custom workout and meal plans personally through the app. Real accountability, real adjustments, real results. Readiness & Recovery Tracker: Sixnity's AI monitors your wearables, sleep, nutrition, and workout patterns to track your daily fitness readiness, fatigue, and recovery needs, giving you actionable insights before small issues become big problems. AI Chatbot - Always On: Get instant, context-aware answers about your training, nutrition, or health any time. The chatbot knows your full plan and data, so every response is specific to you. Marvelous features: AI workout plans tailored to your goals, equipment, and schedule Adaptive programming that evolves with your performance Meal photo analysis for instant, effortless nutrition tracking Personalized meal plans with recipes and grocery lists Assigned human coach for bespoke plans and real accountability Readiness and recovery tracking with actionable fitness insights Daily readiness scores powered by your wearable and sleep data AI Chatbot with full access to your health and training data Advanced analytics: volume, strength ratios, body weight trends Health Connect integration for seamless wearable sync Train with your AI coach: Not sure how hard to push today? Sixnity calculates your daily readiness from your heart rate, sleep, and recovery data, then adjusts your session intensity accordingly. No guessing, no overtraining, no wasted effort. Eat with precision, not stress: Photo scan: instant full nutritional breakdown Weekly meal plan: balanced, affordable, and tailored to you Auto grocery list: categorized and ready to shop Step-by-step recipes for every meal in your plan Stay on track with your human coach: Your assigned coach monitors your progress inside the app, updates your workout and meal plans as you improve, and keeps you accountable every step of the way. Download Sixnity and start training with the intelligence of AI and the heart of a real coach. Disclaimer: Sixnity is a fitness tracking app for general wellness purposes only. It is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before starting any exercise program.
Screenshots
Verdict
The clearest difference is in-app purchases: Sixnity at none against Lyfta's 10. Sixnity also leads on ads (none vs shown). Lyfta's advantage is chart position (#57 vs unranked). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lyfta sells 10 in-app purchases, starting at $5.99 per month. Sixnity asks for nothing beyond the download.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.
| Parameter | Lyfta | Sixnity |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (7.1K ratings) — better | — |
| Positive reviews | 85.5% of reviews | — |
| Number of ratings | 7.1K — better | — |
| Update frequency | Weekly | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #57 — better | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 141 MB | 72 MB |
| Age rating | 9+ | 4+ |
| Developer | Lindberg Development AS | Sphiria Digital Studio (pvt) Ltd |
Bugs and requests
Lyfta
Reported bugs
3 issues- Workouts not resetting properly after completion
- Leg workout tracking not working as expected
- Delayed or unresponsive set timer notifications
Requested features
4 requests- Add more advanced analytics and data visualization
- Improve Apple Watch connectivity and standalone usage
- Allow more customization of the user interface
- Expand the exercise library with more niche movements
Sixnity
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Lyfta
- Lyfta Premium$5.991 Month
- Lyfta Premium$11.491 Month
- Lyfta Premium$12.991 Month
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- Lyfta Premium$17.991 Year
- Lyfta Premium$29.991 Year
- Lyfta Premium$49.991 Year
- Lyfta Premium14 Days trial$49.991 Year
- Lyfta Premium1 Month trial$59.991 Year
- Lyfta Premium14 Days trial$59.991 Year
- Lyfta Premium14 Days trial$79.991 Year
Sixnity
No in-app purchases









