# TREMBLE Studios vs ISI Elite Training

The clearest difference is monetization model: ISI Elite Training at free against TREMBLE Studios's ad-supported. ISI Elite Training also leads on ratings volume (7.8K vs 2.3K). TREMBLE Studios's advantage is review sentiment (100% vs 89%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for TREMBLE Studios against 5.0 for ISI Elite Training. Both are backed by a comparable volume of ratings — 2.3K and 7.8K respectively. Written reviews are what separate them: 100% of TREMBLE Studios's written reviews are positive against 89% of ISI Elite Training's.

TREMBLE Studios ships an update monthly, ISI Elite Training every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | TREMBLE Studios | ISI Elite Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2.3K ratings)](https://appshunter.io/ios/app/tremble-studios/id1524078282/reviews)** | [5.0 (7.8K ratings)](https://appshunter.io/ios/app/isi-elite-training/id6443831308/reviews) |
| Number of ratings | 2.3K | **7.8K** |
| Positive reviews | **100.0% of reviews** | 88.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 38 MB | 59 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Coral Tremble Gables LLC](https://appshunter.io/developer/1524078284) | [Geisler Young](https://appshunter.io/developer/369530382) |

## What reviewers say

### TREMBLE Studios

[App page](https://appshunter.io/ios/app/tremble-studios/id1524078282)

Book reformer Pilates classes with your favorite instructors and reserve your machine spots. Manage your account, billing, and view scheduled classes all in one place. Discover South Florida's premier reformer Pilates brand.

**Highlights:** Find instructors and locations, Book reformer Pilates classes, Reserve machine spots, View scheduled classes, Manage account and billing

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


### ISI Elite Training

[App page](https://appshunter.io/ios/app/isi-elite-training/id6443831308)

Manage your fitness account, view class schedules, and book reservations. Purchase training sessions to enhance your health, strength, and confidence. Elevate your workouts with unique fitness programs.

**Highlights:** Account management, View class schedule, View reservations, Purchase sessions, Workout enhancement

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great community
- 👍 Excellent trainers and coaches
- 🚀 Responsive app
- 💪 Challenging and effective workouts
- 🌟 Transformative experience

**What reviewers complain about**

- 🐛 Issues with class count tracking
- 🔍 Small text in app difficult to read

**Reported bugs**

- Class count not updating correctly
- Booking classes not working in new app

**Requested features**

- Add total sessions remaining in subscription
- Improve app readability and accessibility


## Frequently asked questions

### Is TREMBLE Studios free?

TREMBLE Studios is free to download, with no in-app purchases.

### Is ISI Elite Training free?

ISI Elite Training is free to download, with no in-app purchases.

### Which has better reviews, TREMBLE Studios or ISI Elite Training?

TREMBLE Studios is rated higher. TREMBLE Studios averages 5.0 out of 5 from 2.3K ratings, while ISI Elite Training averages 5.0 from 7.8K ratings.

### Do TREMBLE Studios or ISI Elite Training have ads?

Neither TREMBLE Studios nor ISI Elite Training shows ads.

### Which is updated more often, TREMBLE Studios or ISI Elite Training?

TREMBLE Studios ships an update monthly, and ISI Elite Training every 3 weeks. Most recently, TREMBLE Studios was updated on October 25, 2026 and ISI Elite Training on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*