Comparison

STRETCHIT vs RED Effect

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

Head to head
About

STRETCHIT

This app offers guided flexibility and mobility training to improve athletic performance, reduce pain, and increase range of motion. It provides personalized recommendations, curated programs, and challenges to help users build a consistent stretching habit and achieve their fitness goals.

Highlights
  • Flexibility training for splits and backbends
  • Mobility exercises for athletic performance
  • Personalized training recommendations
  • Curated flexibility and mobility programs
  • Flexibility challenges
  • Competition feature with leaderboards
  • Extensive video instruction library
Features
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FLEXIBILITY TRAINING & CONDITIONING - Get your front, middle, and standing splits - Improve your backbends - Gain strength to support your increased ROM - Accelerate your flexibility progress - Break through a flexibility plateau - Finally make stretching a habit - Join a flexibility challenge to reach your goals faster MOBILITY TRAINING - Improve athletic performance - Increase strength (at the end range of your motion) - Reach your full movement potential - Eliminate muscle stiffness - Fix muscular imbalances - Improve your overall agility - Decrease risk of injury - Function normally and pain-free through your daily activities FEEL-GOOD STRETCH SESSIONS - Recover sooner - Sleep better - Eliminate lower back pain, neck pain, and hip pain - Increase energy levels - Reduce stress, recharge, rewind - Improve posture PERSONALIZED TRAINING RECOMMENDATIONS STRETCHIT will recommend a class or a personal program based on your goals and training history. We'll ask your feedback after each class and guide you to the next one to help you safely push your flexibility thresholds. FLEXIBILITY & MOBILITY PROGRAMS Join one of the curated training programs to finally make stretching a habit and reach your full movement potential. COMPETITIONS A new competition feature that allows users to compete by taking classes, earning points, and climbing the leaderboard. ALL SKILL LEVELS Our users range from those who never stretched before to cheerleaders, dancers, gymnasts, martial artists, surfers, CrossFit lovers, bodybuilders, trick riders, cyclists, runners, aerialists, personal trainers, golfers, moms, athletes, desk sitters, and yogis. All agree: if you want to get more flexible, STRETCHIT works. 100+ HOURS OF VIDEO INSTRUCTION New classes are released weekly. The classes are 5-45 min long. FULLY LOCALIZED AND TRANSLATED TO SPANISH, PORTUGUESE, ITALIAN, GERMAN, FRENCH. The app and all its content (including video classes) are available in English, Spanish, Portuguese, Italian, German, and French. Terms of Service and Privacy Policy: www.stretchitapp.com/terms-of-service CONTACT US Email: support@stretchitapp.com Training tips, daily inspiration, and weekly live streams: Instagram - @stretchitapp, @stretchitapp-espanol Facebook - STRETCHIT YouTube - @stretchitapp, @stretchitapp-espanol Hashtag #stretchitapp. We'd be happy to see your progress and feature you.

About

RED Effect

This app allows users to easily book infrared fitness classes. It provides access to the benefits of infrared training through a convenient booking system, enabling users to select classes by location, date, and time.

Highlights
  • Book fitness classes
  • Infrared benefits
  • High intensity interval training
  • Select location, date, and time
  • Daily class availability
Features
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At Red Effect Infrared Fitness we're here for you every day of the week to provide infrared benefits during your high intensity interval training. With the endless benefits of Infrared Fitness so easy available through our booking app, what are you waiting for? Select your location, date and time on the go with ease any time of the day.

Screenshots

STRETCHIT4 screens
RED Effect4 screens

Verdict

The call

The clearest difference is review sentiment: STRETCHIT at 61% against RED Effect's 7%. STRETCHIT also leads on rating (4.8 vs 1.8) and ads (none vs shown). RED Effect's advantage is in-app purchases (none vs 11) and iOS requirement (13.0 vs 16.4). On price and device support 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. STRETCHIT sells 11 in-app purchases, starting at $4.99 per month. RED Effect asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

STRETCHIT holds the better App Store score, 4.8 against 1.8. That said, the two scores are not equally well evidenced: STRETCHIT has 15K ratings behind it against 50, so its average is the more settled of the two. Written reviews point the same way: 61% of STRETCHIT's written reviews are positive against 7% of RED Effect's.

UpkeepUpdate frequency

STRETCHIT ships an update every 8 days, RED Effect every 2 months. Both last shipped on October 16, 2026.

Scorecard8 real differences · 2 level
STRETCHIT versus RED Effect: the parameters behind the verdict, then further details
ParameterSTRETCHITRED Effect
PriceFreeFree
Rating4.8 (15K ratings) — better1.8 (50 ratings)
Positive reviews60.9% of reviews — better7.4% of reviews
Number of ratings15K — better50
Update frequencyEvery 8 days — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS16.413.0 — better
Further details — not scored
Size141 MB68 MB
Age rating12+12+
DeveloperStretchIt, Inc.ZIFIT LA JOLLA, INC.

Customer experience

STRETCHIT

All ratings15,139 ratings
Positive94.7%
Neutral2.3%
Negative3.0%
Written reviews593 reviews
Positive60.9%
Neutral7.8%
Negative31.4%

RED Effect

All ratings50 ratings
Positive14.0%
Neutral8.0%
Negative78.0%
Written reviews27 reviews
Positive7.4%
Neutral7.4%
Negative85.2%

Bugs and requests

STRETCHIT

Reported bugs

3 issues
  • Video playback issues (freezing, crashing)
  • Inaccurate class difficulty labeling
  • Syncing issues with Apple Health

Requested features

5 requests
  • Calendar view to track progress
  • Ability to replace scheduled classes
  • More beginner-friendly and modified exercises
  • Handstand and other advanced skill training
  • Personalized recommendations based on feedback

RED Effect

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

STRETCHIT

Subscriptions11
  • Full Body Stretch$4.991 Month
  • Full Body Stretch (trial)7 Days trial$4.991 Month
  • Get Your Splits$4.991 Month
Show 8 more
  • Get Your Splits (trial)7 Days trial$4.991 Month
  • Bendy Back$4.991 Month
  • Bendy Back (trial)7 Days trial$4.991 Month
  • Middle Split Stretch$4.991 Month
  • Middle Split Stretch (trial)7 Days trial$4.991 Month
  • Stretching flexibility Monthly7 Days trial$24.991 Month
  • Yearly7 Days trial$144.991 Year
  • Flexibility. Yearly7 Days trial$179.991 Year
None

RED Effect

No in-app purchases

Questions

Is STRETCHIT free?
STRETCHIT is free to download, with in-app purchases available.
Is RED Effect free?
RED Effect is free to download, with no in-app purchases.
Which has better reviews, STRETCHIT or RED Effect?
STRETCHIT is rated higher. STRETCHIT averages 4.8 out of 5 from 15K ratings, while RED Effect averages 1.8 from 50 ratings.
Do STRETCHIT or RED Effect have ads?
RED Effect shows ads; STRETCHIT does not.
Which is updated more often, STRETCHIT or RED Effect?
STRETCHIT ships an update every 8 days, and RED Effect every 2 months. Most recently, STRETCHIT was updated on October 16, 2026 and RED Effect on October 16, 2026.

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