Comparison

123 Flex vs Stretchlet

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

Head to head
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.

About

Stretchlet

This app offers a comprehensive collection of stretching routines and yoga poses designed to improve flexibility, alleviate pain, and enhance overall well-being. It caters to all experience levels, providing tailored programs and progress tracking to help users achieve their fitness goals.

Highlights
  • Enhance flexibility and mobility
  • Alleviate and prevent pain
  • Mitigate injury risk
  • Improve sleep quality and energy
  • Cultivate optimal posture
  • Track progress and achievements
  • Tailored flexibility programs
Features
Read full description

Stretchlet makes stretching an easy daily habit. Pick a short guided routine, follow clear instructions pose by pose, and move with less stiffness. A little stretch. A better day. EVERYTHING YOU NEED TO STRETCH WELL • 144 illustrated stretches and poses with step-by-step instructions and safety cues • 66 guided routines from 1 to 21 minutes, for beginners and beyond • Stretchlet AI: describe your goal and get a routine built from our pose library. Choose 3–30 minutes, beginner to advanced, standing, seated or on the floor • Custom routines: build, save and repeat your own • A timed player with clear side switches, so you can follow along away from your phone • Progress dashboard, streaks and reminders to keep the habit going ROUTINES FOR EVERY PART OF YOUR DAY • Morning: Wake Up and Full Body • Desk breaks: At Desk and Standing Desk routines for neck, shoulders and back • Posture Reset, Lower Back, Hips, Hamstrings, Shoulders and Twists • Splits training for bigger flexibility goals • Warm Up before exercise; Post Run and Post Exercise to cool down • Evening: Unwind to Sleep and Deep Relax MADE FOR REAL LIFE No equipment, no gym and no experience needed. Stretch at home, at work or on the go, in a few minutes a day. Available in 16 languages. STRETCHLET PREMIUM Stretchlet is free to download and includes free routines to get started. Stretchlet Premium unlocks the full routine library. Premium is an auto-renewing subscription: payment is charged to your Apple Account when you confirm the purchase, and it renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it anytime in your App Store account settings. If a free trial is offered, any unused portion ends when you buy a subscription. Terms of Use: https://stretchingapp.com/terms Questions? support@stretchingapp.com Stretchlet offers general stretching guidance, not medical advice. If you have an injury or a health condition, check with a professional first, and stop any movement that causes pain.

Screenshots

123 Flex4 screens
Stretchlet4 screens

Verdict

The call

The clearest difference is review sentiment: 123 Flex at 100% against Stretchlet's 50%. 123 Flex also leads on update cadence (every 4 days vs every 9 days) and iOS requirement (13.0 vs 16.4). Stretchlet's advantage is rating (4.7 vs 4.0) and ratings volume (30 vs 2). On price, ads, 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. 123 Flex sells 2 in-app purchases, starting at $9.99 per month and Stretchlet sells 6 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

Stretchlet holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Stretchlet has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of 123 Flex's written reviews are positive against 50% of Stretchlet's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

123 Flex ships an update every 4 days, Stretchlet every 9 days. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
123 Flex versus Stretchlet: the parameters behind the verdict, then further details
Parameter123 FlexStretchlet
PriceFreeFree
Rating4.0 (2 ratings)4.7 (30 ratings) — better
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings230 — better
Update frequencyEvery 4 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size78 MB497 MB
Age rating12+4+
DeveloperWeAnd LtdPatagonia Capital LLC

Customer experience

123 Flex

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

Stretchlet

All ratings30 ratings
Positive93.3%
Neutral0.0%
Negative6.7%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

2 purchases

123 Flex

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

Stretchlet

Subscriptions6
  • Monthly Membership$9.991 Month
  • Monthly7 Days trial$14.991 Month
  • Annual Membership (50% Off)$29.991 Year
Show 3 more
  • Annual Membership (43% Off)$39.991 Year
  • Annual Membership (43% Off)7 Days trial$39.991 Year
  • Yearly7 Days trial$69.991 Year

Questions

Is 123 Flex free?
123 Flex is free to download, with in-app purchases available.
Is Stretchlet free?
Stretchlet is free to download, with in-app purchases available.
Which has better reviews, 123 Flex or Stretchlet?
Stretchlet is rated higher. 123 Flex averages 4.0 out of 5 from 2 ratings, while Stretchlet averages 4.7 from 30 ratings.
Do 123 Flex or Stretchlet have ads?
Neither 123 Flex nor Stretchlet shows ads.
Which is updated more often, 123 Flex or Stretchlet?
123 Flex ships an update every 4 days, and Stretchlet every 9 days. Most recently, 123 Flex was updated on October 7, 2026 and Stretchlet on October 21, 2026.

Other comparisons