Comparison

Stretch Mode vs 123 Flex

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stretch Mode

This app offers guided stretching and mobility programs designed by physical therapists. It features daily video classes, on-demand sessions for specific body parts and goals, and personalized assessments to improve flexibility, reduce pain, and enhance performance.

Highlights
  • Doctor-designed stretching methods
  • Daily 10-20 minute video classes
  • 1500+ on-demand sessions
  • Personalized virtual mobility assessment
  • Custom routine builder
  • Progress tracking
Features
Read full description

Stretch Mode takes the guesswork out of stretching and mobility. Our 10-20 minute daily video classes and guided mobility programs are designed by top Doctors of Physical Therapy to help you move better, fix your pain, prevent injury, improve your performance, and keep doing what you love. WHY STRETCH MODE Doctor of Physical Therapy-designed method: Active stretching + muscle activation exercises + targeted muscle and fascia release techniques, sequenced to create long lasting flexibility and mobility results. Fast results you can feel: Our effective active stretching method will improve your mobility fast. Short sessions, clear cues, and progress you can measure in re-tests and daily life. Personalized to you: A Virtual Mobility Assessment scores your joints and movement. WHAT YOU GET ⊕ Daily Class: A new full-body mobility class every day (10–20 min) with precise coaching and modifications using our effective active stretching method. ⊕ 1500+ On-Demand Sessions: Hips, hamstrings, calves, T-spine, shoulders, ankles, wrists, and more organized by body part, sport, and goal. ⊕ Complete Programs: Expert designed multi-week programs such as our: 16-week low back program, 8-week neck program, 8-week shoulder program, 8-week knee pain program, 8-week plantar fasciitis program, 8-week hypermobility program, and 8-week beginner stretching program. ⊕ Pre-Workout & Recovery: Prime your lifts, runs, and rides; restore deeper after training or long days. ⊕ Desk-Friendly Routines: Quick resets to counter sitting and screen time (no special equipment or outfit needed). ⊕ Custom Routine Builder: Drag-and-drop exercises to create your perfect flow and save favorites for one-tap access. ⊕ Exercise Library: The largest stretching and exercise library out there ⊕ Progress Tracking: Streaks, total mobility time, completed sessions, assessment scores, and re-test snapshots to see what’s improving. ⊕ Low-Equipment Options: A mat is enough. Foam roller or mobility ball optional. Bands/dumbbells available in select classes. ⊕ Virtual Mobility Assessment: Our Virtual Mobility Assessment will help you identify the areas of your body that you need to work on by generating a personalized total mobility score and a separate mobility score for each major joint in your body. Built for busy schedules: 10-20 minutes beats “I’ll start next week.” Built for real bodies: beginner to advanced, tight to flexible. We have classes and programs for you. BENEFITS ⊕ Improved flexibility & mobility: in your daily life activities and in with your lifts ⊕ Improved joint stability: at end ranges of motion ⊕ Less pain and stiffness: in your back, neck, hips, shoulders, knees, and ankles ⊕ Decreased injuries: Less compensation and joint wear and tear due to your improved mobility ⊕ Improved posture: Fix your rounded upper back, rounded shoulders, and forward neck posture. ⊕ Improved balance, and coordination: that carries into your daily activities, the gym and in your sport ⊕ Enhanced recovery: that helps you feel less sore, and helps you get back after it ⊕ Improved Performance: better warmups, achieving better positions in your lifts, more efficient movement BUILT FOR EVERYONE Beginner to advanced, desk-worker to athlete. Choose body-part classes, sport-specific warmups, or follow a complete multi-week program. Clear coaching points, time-boxed sessions, and scalable progressions make it easy to stay consistent. FEATURED IN Men’s Health, Women’s Health, Nike, Runner’s World, WebMD, Healthline, and more. Join thousands who’ve made mobility a daily habit with Stretch Mode. Start with your Virtual Mobility Assessment. Do your first Daily Class. Feel the difference. See why we have been called “The most effective stretching and mobility app” Terms and Conditions: https://stretchmode.co/tos Privacy Policy: https://stretchmode.co/privacy-policy We love your feedback. Contact support@stretchmode.co

About

123 Flex

This app provides personalized stretching and flexibility routines based on your fitness goals and physical condition. It features AI-driven program generation, progress tracking, and visual demonstrations to guide your workouts.

Highlights
  • Personalized AI workout plans
  • Progress tracking and reassessments
  • 3D animated stretch demonstrations
  • Safety tips and injury precautions
  • Audio guidance for sessions
  • Offline workout mode
  • Motivation through rewards and challenges
Features
Read full description

Feel better and gain confidence with 123 Flex, the flexibility coach designed to empower and enhance your fitness and stretching routine. Choose us and get: A Detailed Surveyor Introduce your goals and health: • Current flexibility level • Specific fitness and flexibility goals (e.g., improving hamstring flexibility, mastering a split, other stretch goals) • Previous injuries or areas of concern in your stretch workouts • Preferred workout duration • Frequency of workout routines • Specific sports or activities they participate in during their fitness journey Matching you to a program: A robust AI system that processes your survey answers to generate a personalized stretching and workout routine. Progress Tracking: Track your flexibility progress over time, monitoring your workouts and routines, with periodic reassessments to adjust as you improve or as your goals change. Visual Demonstrations: 3D animated models showing correct form and technique for each stretch in your workout. Safety Tips: Include precautions for each stretch and workout, especially for users with specific past injuries. Feedback Loop: After each session, you are asked for feedback. Was the stretch or workout too easy or hard? Any pain? The AI learns from your routines. Reminders & Scheduling: Set reminders or schedule their stretching and fitness sessions. Variability: The AI shuffles workout routines or introduce new stretches to keep users engaged, ensuring they are working all relevant muscle groups during their fitness journey. Guided Sessions: Audio guidance for each stretching session, ensuring users hold the stretch for the appropriate amount of time and relax into each pose. Resource Library: A database of all stretches and workout benefits, possible variations, common mistakes, and progressions. Rewards, stretch badges, and challenges to keep you motivated throughout your fitness journey. Offline Mode: Allows you to download your routines and workouts, using them without an active internet connection. Note: 123 Flex is suitable for all ages and fitness levels. However, always consult your doctor or physiotherapist before starting any new fitness or stretching program.

Screenshots

Stretch Mode4 screens
123 Flex4 screens

Verdict

The call

The clearest difference is rating: Stretch Mode at 4.9 against 123 Flex's 4.0. Stretch Mode also leads on ratings volume (295 vs 2). 123 Flex's advantage is ads (none vs shown) and update cadence (every 4 days vs every 5 weeks). On price, review sentiment, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stretch Mode sells 4 in-app purchases, starting at $14.99 per month and 123 Flex sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Stretch Mode holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Stretch Mode has 295 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 94% of Stretch Mode's written reviews are positive against 100% of 123 Flex's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Stretch Mode ships an update every 5 weeks, 123 Flex every 4 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Stretch Mode versus 123 Flex: the parameters behind the verdict, then further details
ParameterStretch Mode123 Flex
PriceFreeFree
Rating4.9 (295 ratings) — better4.0 (2 ratings)
Positive reviews93.8% of reviews100.0% of reviews — better
Number of ratings295 — better2
Update frequencyEvery 5 weeksEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size67 MB78 MB
Age rating4+12+
DeveloperStretch Mode LLCWeAnd Ltd

Customer experience

Stretch Mode

All ratings294 ratings
Positive97.6%
Neutral1.0%
Negative1.4%
Written reviews96 reviews
Positive93.8%
Neutral2.1%
Negative4.2%

123 Flex

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Stretch Mode

Reported bugs

4 issues
  • My assessment wouldn't progress past the 1st of 14 movements
  • The daily class did not stay up to date
  • Unable to use additionally on my IPad and the support feature in the app's Setting tab does not work
  • Whenever I try to do screen mirroring onto my television it is blurry

Requested features

4 requests
  • Specific tracks like splits, increase hamstring mobility, increase thoracic mobility programs
  • Where is the knee pain program
  • Please add duration to the About the Class metrics
  • Please make an app for Amazon Fire

123 Flex

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Stretch Mode

Subscriptions4
  • Individual Plan Monthly7 Days trial$14.991 Month
  • Gym Plan Monthly7 Days trial$29.991 Month
  • Individual Plan Yearly7 Days trial$119.991 Year
Show 1 more
  • Gym Plan Yearly7 Days trial$239.991 Year
2 purchases

123 Flex

Subscriptions2
  • Premium Monthly7 Days trial$9.991 Month
  • Premium Yearly7 Days trial$59.991 Year

Questions

Is Stretch Mode free?
Stretch Mode is free to download, with in-app purchases available.
Is 123 Flex free?
123 Flex is free to download, with in-app purchases available.
Which has better reviews, Stretch Mode or 123 Flex?
Stretch Mode is rated higher. Stretch Mode averages 4.9 out of 5 from 295 ratings, while 123 Flex averages 4.0 from 2 ratings.
Do Stretch Mode or 123 Flex have ads?
Stretch Mode shows ads; 123 Flex does not.
Which is updated more often, Stretch Mode or 123 Flex?
Stretch Mode ships an update every 5 weeks, and 123 Flex every 4 days. Most recently, Stretch Mode was updated on October 29, 2026 and 123 Flex on October 24, 2026.

Other comparisons