Comparison

Vibrant Strength vs STRONG BY IZZY

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

Head to head
About

Vibrant Strength

This app offers expert-led fitness programs designed by a Doctor of Physical Therapy. It focuses on strength building, bone density improvement, prenatal and postpartum fitness, and women's health, with new content added weekly.

Highlights
  • Science-backed strength programs
  • Prenatal & postpartum fitness
  • Perimenopause & menopause support
  • On-demand workout videos
  • Pelvic floor & women's health education
  • Weekly content updates
Features
Read full description

Vibrant Strength: Empower Your Fitness Journey Take charge of your fitness and wellness with Vibrant Strength, the app designed by Dr. Jessica Chellsen, PT, DPT, CSCS, a Doctor of Physical Therapy and pelvic floor specialist. Whether you’re looking to build strength, improve bone density, lose weight, stay active during pregnancy, or recover postpartum Vibrant Strength offers expert-led programs tailored to your needs. What You’ll Get: • Science-Backed Strength Programs: Build lean muscle and improve bone density with at-home workouts using dumbbells and bands. Follow along with the weekly workout plan! • Prenatal & Postpartum Fitness: Train safely during pregnancy and recover effectively postpartum with programs designed to support your pelvic floor and prevent pain. • Support for Perimenopause & Menopause: Maintain strength, manage symptoms, and improve overall wellness with targeted programs designed for this stage of life. • On-Demand Workouts: Access pre-made workout plans and a growing library of on demand videos. • Pelvic Floor & Women’s Health Education: Learn about pelvic floor health, weightlifting for women, perimenopause and menopause, and pregnancy/postpartum care. • Weekly Updates: Stay motivated with new content added every week. Why Vibrant Strength? Designed for women by a Doctor of Physical Therapy and pelvic floor specialist, this app empowers you to feel strong, confident, and pain-free—no matter where you are in your fitness journey. Download Vibrant Strength today and start building the vibrant, strong body you deserve!

About

STRONG BY IZZY

This platform offers structured, intelligent movement programs focused on building strength, control, and long-term results through strength-based Pilates. It provides a growing library of workouts, structured programs, and a supportive community for those seeking discipline and effective training.

Highlights
  • Strength-based Pilates workouts
  • Structured training programs
  • Heavy dumbbell sessions
  • Sculpt focused classes
  • Progressive workout challenges
  • Supportive community
Read full description

TRANSFORM YOUR BODY. EMPOWER YOUR MIND. STRONG is a strength based Pilates platform designed to build strength, control, and long term results through structured, intelligent movement. STRONG is built on precision, progression, and consistency, combining strength focused Pilates with intentional programming that challenges your body without burning it out. Every session is designed to improve strength, stability, coordination, and total body control. Expect intelligent sequencing, time under tension, and purposeful repetition that compounds over time. Training is guided, continuous, and methodical, allowing you to move with confidence while building a resilient, capable body. STRONG is for those who want more than quick fixes. It’s for people who value structure, discipline, and training that works. Inside STRONG, you’ll find: • A growing library of strength based Pilates workouts across six distinct class styles. • Training that includes heavy dumbbell sessions, sculpt focused classes, and more. • Structured programs, challenges, and weekly schedules to guide your training. • Long, continuous sessions designed for focus, flow, and progression. • Intelligent programming that supports sustainable results over time. • A supportive, motivating community that trains with purpose and consistency. Whether you’re training at home or seeking a more intentional approach to movement, STRONG provides the structure, guidance, and environment to help you stay consistent, build strength, and move better over time. To access all features and content you can subscribe to STRONG BY IZZY on a monthly or yearly basis with an auto-renewing subscription right inside the app.* Pricing can vary by region and will be confirmed before purchase in the app. In app subscriptions will automatically renew at the end of their cycle. All payments will be paid through your iTunes Account and may be managed under Account Settings after the initial payment. Subscription payments will automatically renew unless deactivated at least 24-hours before the end of the current cycle. Your account will be charged for renewal at least 24-hours prior to the end of the current cycle. Cancellations are incurred by disabling auto-renewal. Terms of Service: https://www.strongbyizzy.com/tos Privacy Policy: https://www.strongbyizzy.com/privacy

Screenshots

Vibrant Strength4 screens
STRONG BY IZZY4 screens

Verdict

The call

The clearest difference is in-app purchases: Vibrant Strength at none against STRONG BY IZZY's 8. STRONG BY IZZY's advantage is ratings volume (184 vs 4) and update cadence (every 3 months vs every 10 months). On price, rating, review sentiment and ads 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. STRONG BY IZZY sells 8 in-app purchases, starting at $34.99 per month. Vibrant Strength asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Vibrant Strength against 4.9 for STRONG BY IZZY. That said, the two scores are not equally well evidenced: STRONG BY IZZY has 184 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 100% of Vibrant Strength's written reviews are positive against 97% of STRONG BY IZZY's.

UpkeepUpdate frequency

Vibrant Strength ships an update every 10 months, STRONG BY IZZY every 3 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Vibrant Strength versus STRONG BY IZZY: the parameters behind the verdict, then further details
ParameterVibrant StrengthSTRONG BY IZZY
PriceFreeFree
Rating5.0 (4 ratings) — better4.9 (184 ratings)
Positive reviews100.0% of reviews — better96.6% of reviews
Number of ratings4184 — better
Update frequencyEvery 10 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better16.6
Further details — not scored
Size122 MB105 MB
Age rating12+4+
DeveloperSutra Fitness, Inc.Izzy Samuel Pty lTD

Customer experience

Vibrant Strength

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

STRONG BY IZZY

All ratings157 ratings
Positive96.8%
Neutral0.6%
Negative2.5%
Written reviews89 reviews
Positive96.6%
Neutral1.1%
Negative2.2%

In-app purchases

None

Vibrant Strength

No in-app purchases

8 purchases

STRONG BY IZZY

Subscriptions2
  • STRONG BY IZZY Monthly$34.991 Month
  • STRONG BY IZZY Yearly$349.991 Year
One-time6
  • STRONG BY IZZY - 3499$34.99
  • STRONG BY IZZY - 4499$44.99
  • STRONG BY IZZY - 6499$64.99
Show 3 more
  • STRONG BY IZZY - 7499$74.99
  • STRONG BY IZZY - 8499$84.99
  • STRONG BY IZZY - 9999$99.99

Questions

Is Vibrant Strength free?
Vibrant Strength is free to download, with no in-app purchases.
Is STRONG BY IZZY free?
STRONG BY IZZY is free to download, with in-app purchases available.
Which has better reviews, Vibrant Strength or STRONG BY IZZY?
Vibrant Strength is rated higher. Vibrant Strength averages 5.0 out of 5 from 4 ratings, while STRONG BY IZZY averages 4.9 from 184 ratings.
Do Vibrant Strength or STRONG BY IZZY have ads?
Neither Vibrant Strength nor STRONG BY IZZY shows ads.
Which is updated more often, Vibrant Strength or STRONG BY IZZY?
Vibrant Strength ships an update every 10 months, and STRONG BY IZZY every 3 months. Most recently, Vibrant Strength was updated on October 24, 2026 and STRONG BY IZZY on October 31, 2026.

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