Comparison

Flexible Strength Academy vs Estira

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

Head to head
About

Flexible Strength Academy

Features
Read full description

WE TRAIN TO BECOME STRONG & FLEXIBLE | The Flexible Strength Academy app features: - Workout programs for beginners & advanced practitioners - 100+ video tutorials for ALL LEVELS + follow along training sessions - Side split, front split, pancake, spine, shoulders + contortion training - Video tutorials offer in-depth explanations of the exercises - Option to download workouts and access them offline wherever, whenever - Includes progress tracker with the option to upload progress photos - Options to scale drills + exercises to your level - Updates on new workouts in the app INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of Flexible Strength Academy is free of charge. Should you use Flexible Strength Academy to access in-app content via available subscription(s), a payment will be charged to your credit card after the trial period ends and when a subscription renews. A subscription renews automatically unless canceled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscription(s) can be managed and auto-renewal turned off in Account Settings in the App Store after purchase. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy

About

Estira

Features
Read full description

Estira is a stretch routine and mobility app for short, calm movement sessions you can fit into the day. Choose a routine, preview each move, and follow a simple timer with clear cues for posture, flexibility, recovery, and desk breaks. SHORT ROUTINES - Start a guided routine in minutes - Preview every movement before you begin - Follow a calm timer with clear exercise cues - Pick routines for different parts of the body MOBILITY AND POSTURE - Routines for neck, shoulders, back, hips, hamstrings, ankles, and full-body mobility - Useful for desk breaks, recovery days, morning movement, and evening wind-downs - Simple structure so you do not have to plan the session yourself BUILT FOR CONSISTENCY - Recent activity saved on your device - Works offline after launch - No account required - No subscription required Estira is designed for general wellness and mobility. It is not a medical app. If you have pain, an injury, or a medical condition, check with a qualified professional before starting a new stretching routine.

Screenshots

Flexible Strength Academy4 screens
Estira3 screens

Verdict

The call

The clearest difference is in-app purchases: Estira at none against Flexible Strength Academy's 1. Estira also leads on ads (none vs shown) and update cadence (every 10 days vs every 3 months). Flexible Strength Academy's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Flexible Strength Academy sells 1 in-app purchase, starting at $8.99 per month. Estira asks for nothing beyond the download.

UpkeepUpdate frequency

Flexible Strength Academy ships an update every 3 months, Estira every 10 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

Scorecard5 real differences ยท 1 level
Flexible Strength Academy versus Estira: the parameters behind the verdict, then further details
ParameterFlexible Strength AcademyEstira
PriceFreeFree
Update frequencyEvery 3 monthsEvery 10 days โ€” better
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.1 โ€” better17.0
Further details โ€” not scored
Size89 MB28 MB
Age rating17+4+
DeveloperSebastiaan Pagano MiraniAlexander Amancio

In-app purchases

1 purchases

Flexible Strength Academy

Subscriptions1
  • FSA membership7 Days trial$8.991 Month
None

Estira

No in-app purchases

Questions

Is Flexible Strength Academy free?
Flexible Strength Academy is free to download, with in-app purchases available.
Is Estira free?
Estira is free to download, with no in-app purchases.
Do Flexible Strength Academy or Estira have ads?
Flexible Strength Academy shows ads; Estira does not.
Which is updated more often, Flexible Strength Academy or Estira?
Flexible Strength Academy ships an update every 3 months, and Estira every 10 days. Most recently, Flexible Strength Academy was updated on October 16, 2026 and Estira on October 24, 2026.

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