Comparison

STRONG BY IZZY vs Simuii

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

Head to head
About

STRONG BY IZZY

This platform offers strength-based Pilates workouts designed for building strength, control, and long-term results. It provides structured programs, intelligent sequencing, and a supportive community for those seeking discipline and effective training.

Highlights
  • Strength-based Pilates workouts
  • Structured programs and challenges
  • Six distinct class styles
  • Heavy dumbbell sessions
  • Intelligent programming for sustainable results
  • 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

About

Simuii

This app transforms your iPhone into a touch instrument for calm. It offers guided sessions for relaxation, sleep, focus, or release, adapting to your intentions with responsive sound and haptics. Personalize your experience with optional data inputs for unique tuning and track your mood privately.

Highlights
  • Touch instrument for calm
  • Guided sessions (Calm, Sleep, Focus, Release)
  • Responsive color, spatial tones, and haptics
  • Personalized musical tuning
  • Private mood check-ins
  • On-device data storage
Read full description

Simuii is a touch instrument for a quiet moment. Choose Calm, Sleep, Focus, or Release, then press, hold, or glide across the screen to create soft tones, moving color, and gentle haptics. GO AT YOUR OWN PACE A simple session timer helps you settle in. Pause, resume, or finish whenever you wish. Sound, vibration, and motion can be adjusted during a session. MAKE IT YOURS An optional mood check-in and private journey help you notice how a session felt. You can skip reflection entirely. Your journey stays on your iPhone. PRIVATE BY DESIGN No account, advertising, or third-party analytics. Simuii is for general wellbeing, not medical treatment or diagnosis.

Screenshots

STRONG BY IZZY4 screens
Simuii2 screens

Verdict

The call

The clearest difference is in-app purchases: Simuii at none against STRONG BY IZZY's 8. Simuii also leads on update cadence (weekly vs every 2 months). STRONG BY IZZY's advantage is ratings volume (191 vs 3) and iOS requirement (16.6 vs 18.0). 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. Simuii asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for STRONG BY IZZY against 5.0 for Simuii. That said, the two scores are not equally well evidenced: STRONG BY IZZY has 191 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 95% of STRONG BY IZZY's written reviews are positive against 100% of Simuii's.

UpkeepUpdate frequency

STRONG BY IZZY ships an update every 2 months, Simuii weekly. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
STRONG BY IZZY versus Simuii: the parameters behind the verdict, then further details
ParameterSTRONG BY IZZYSimuii
PriceFreeFree
Rating4.9 (191 ratings)5.0 (3 ratings) — better
Positive reviews95.2% of reviews100.0% of reviews — better
Number of ratings191 — better3
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better18.0
Further details — not scored
Size88 MB4 MB
Age rating4+4+
DeveloperIzzy Samuel Pty lTDDieu Buhendwa

Customer experience

STRONG BY IZZY

All ratings186 ratings
Positive97.3%
Neutral0.5%
Negative2.2%
Written reviews104 reviews
Positive95.2%
Neutral1.9%
Negative2.9%

Simuii

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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
None

Simuii

No in-app purchases

Questions

Is STRONG BY IZZY free?
STRONG BY IZZY is free to download, with in-app purchases available.
Is Simuii free?
Simuii is free to download, with no in-app purchases.
Which has better reviews, STRONG BY IZZY or Simuii?
Simuii is rated higher. STRONG BY IZZY averages 4.9 out of 5 from 191 ratings, while Simuii averages 5.0 from 3 ratings.
Do STRONG BY IZZY or Simuii have ads?
Neither STRONG BY IZZY nor Simuii shows ads.
Which is updated more often, STRONG BY IZZY or Simuii?
STRONG BY IZZY ships an update every 2 months, and Simuii weekly. Most recently, STRONG BY IZZY was updated on November 13, 2026 and Simuii on October 31, 2026.

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