# Pilates by Kerstin vs TF STUDIO

The clearest difference is monetization model: TF STUDIO at free with in-app purchases against Pilates by Kerstin's subscription. TF STUDIO also leads on ratings volume (337 vs 86). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Pilates by Kerstin sells 2 in-app purchases, starting at $14.99 per month and TF STUDIO sells 7 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Pilates by Kerstin against 4.9 for TF STUDIO. Both are backed by a comparable volume of ratings — 86 and 337 respectively. Written reviews are what separate them: 99% of Pilates by Kerstin's written reviews are positive against 97% of TF STUDIO's.

Pilates by Kerstin ships an update every 3 months, TF STUDIO every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Pilates by Kerstin | TF STUDIO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (86 ratings)](https://appshunter.io/ios/app/pilates-by-kerstin/id1553871342/reviews)** | [4.9 (337 ratings)](https://appshunter.io/ios/app/tf-studio/id1558654839/reviews) |
| Number of ratings | 86 | **337** |
| Positive reviews | **98.8% of reviews** | 97.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 106 MB | 81 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Pilates By Kerstin](https://appshunter.io/developer/1553871344) | [Franken Worldwide Inc.](https://appshunter.io/developer/1558654841) |

## What reviewers say

### Pilates by Kerstin

[App page](https://appshunter.io/ios/app/pilates-by-kerstin/id1553871342)

This app offers a mindful approach to fitness with low-impact Pilates workouts designed for longevity. It focuses on building strength, creating leaner muscles, and fostering a healthy relationship with exercise, food, and your body. Access guided routines, healthy recipes, and restorative practices for a holistic wellness journey.

**Highlights:** Low-impact Pilates workouts, 30-Day Signature Program, Healthy recipes for mindful eating, Yoga and stretch routines, Calming sound bowl meditations, At-home fitness

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pilates by Kerstin Monthly | $14.99 | per month |
| Pilates by Kerstin Yearly | $144.99 | per year |

**What reviewers like**

- 🧘 Calming instructor with soothing voice
- 💪 Effective workouts with visible results
- 📱 User-friendly app interface and navigation
- ⏱️ Flexible workout lengths for busy schedules
- 🎯 Multiple difficulty levels (beginner to advanced)

**What reviewers complain about**

- 📊 Limited new content updates
- 🔄 Repetitive workouts after extended use
- 💳 Billing and refund issues
- ⚠️ Inconsistent rep counts and pacing between sets
- 📝 Lack of workout descriptions/tags for filtering

**Reported bugs**

- Wrongful charges after cancellation
- Unresponsive customer support for billing disputes
- One-star reviews being suppressed/not posted

**Requested features**

- More frequent new workout uploads (weekly or bi-weekly)
- Workout descriptions and tags for filtering by modifications (knee-friendly, etc.)
- Custom folder organization for saved workouts
- More detailed form and breathing cues during workouts
- Easier variations shown during exercises


### TF STUDIO

[App page](https://appshunter.io/ios/app/tf-studio/id1558654839)

This app offers dynamic Pilates workouts designed for at-home use, focusing on sculpting and strengthening without bulk. It features a blend of classic Pilates with strength-based sequences, suitable for all levels and available live, on-demand, or as reformer classes.

**Highlights:** Dynamic Power Pilates method, Strength-based, flowing sequences, Live, on-demand, and reformer classes, Beginner to advanced workouts, Smart filters for class selection, Pregnancy-friendly and cycle-syncing options

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TF STUDIO Monthly | $19.99 | per month |
| TF STUDIO Yearly | $179.99 | per year |
| T - F Studio - 999 | $9.99 | one-time |
| T - F Studio - 1499 | $14.99 | one-time |
| T - F Studio - 2099 | $20.99 | one-time |
| T - F Studio - 2999 | $29.99 | one-time |
| T - F Studio - 19999 | $199.99 | one-time |

**What reviewers like**

- 💪 Effective and challenging workouts
- 🧘‍♀️ Calming and grounding instruction
- 🔥 Visible body transformation results
- 🤩 Enjoyable and motivating
- 🧠 Holistic approach to health and wellness

**What reviewers complain about**

- 🐛 Occasional app glitches or video playback issues
- 🔍 Difficulty finding specific workouts
- 🕰️ Wish for more live/interactive classes

**Reported bugs**

- Some videos not playing properly
- Occasional app crashes

**Requested features**

- Custom playlists or favorites feature
- Improved video progress tracking
- More streaming options for TV integration


## Frequently asked questions

### Is Pilates by Kerstin free?

Pilates by Kerstin is free to download, with in-app purchases available.

### Is TF STUDIO free?

TF STUDIO is free to download, with in-app purchases available.

### Which has better reviews, Pilates by Kerstin or TF STUDIO?

Pilates by Kerstin is rated higher. Pilates by Kerstin averages 4.9 out of 5 from 86 ratings, while TF STUDIO averages 4.9 from 337 ratings.

### Do Pilates by Kerstin or TF STUDIO have ads?

Neither Pilates by Kerstin nor TF STUDIO shows ads.

### Which is updated more often, Pilates by Kerstin or TF STUDIO?

Pilates by Kerstin ships an update every 3 months, and TF STUDIO every 2 months. Most recently, Pilates by Kerstin was updated on November 3, 2026 and TF STUDIO on November 3, 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.*