# Studio 6 Wellness vs Stackr

The clearest difference is rating: Studio 6 Wellness at 5.0 against Stackr's 4.4. Studio 6 Wellness also leads on in-app purchases (none vs 7) and device support (3 vs 1). Stackr's advantage is update cadence (every 4 days vs every 33 months) and ratings volume (143 vs 1). On price and ads there is nothing between them.

Both are free to download. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Studio 6 Wellness asks for nothing beyond the download.

Studio 6 Wellness holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Stackr has 143 ratings behind it against 1, so its average is the more settled of the two.

Studio 6 Wellness ships an update every 33 months, Stackr every 4 days. The most recent releases landed on September 26, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Studio 6 Wellness | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/studio-6-wellness/id1396526993/reviews)** | [4.4 (143 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) |
| Number of ratings | 1 | **143** |
| Positive reviews | — | 72.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#188** |
| Size | 55 MB | 88 MB |
| Requires iOS | **11.0.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Studio 6 Wellness](https://appshunter.io/developer/1396526992) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Studio 6 Wellness

[App page](https://appshunter.io/ios/app/studio-6-wellness/id1396526993)

Discover a variety of fitness classes like Pilates, Yoga, and TRX. This app connects you to a boutique studio offering private and semi-private lessons for all ages and skill levels. Achieve your fitness goals and find a stronger, more flexible you.

**Highlights:** Pilates classes, Yoga sessions, GYROTONIC® Method, TRX training, Mat fusion workouts, Private lessons, Semi-private lessons

**Features:** macOS Compatibility

**In-app purchases:** none


### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587)

**Currently charting:** #188 Top Free · Health & Fitness, #195 Top Grossing · Health & Fitness (US App Store)

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

**Highlights:** Log peptide and GLP-1 doses, Track vials, pens, and other supplies, Smart reminders for next doses, Home screen widgets, Estimated active level charts, Multi-peptide stack tracking, Reference pages for common compounds

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackr+ Weekly | $7.99 | per 7 days |
| Monthly | $12.99 | per month |
| Stackr+ Yearly | $29.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $59.99 | per year |
| Yearly | $69.99 | per year |


## Frequently asked questions

### Is Studio 6 Wellness free?

Studio 6 Wellness is free to download, with no in-app purchases.

### Is Stackr free?

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

### Which has better reviews, Studio 6 Wellness or Stackr?

Studio 6 Wellness is rated higher. Studio 6 Wellness averages 5.0 out of 5 from 1 ratings, while Stackr averages 4.4 from 143 ratings.

### Do Studio 6 Wellness or Stackr have ads?

Neither Studio 6 Wellness nor Stackr shows ads.

### Which is updated more often, Studio 6 Wellness or Stackr?

Studio 6 Wellness ships an update every 33 months, and Stackr every 4 days. Most recently, Studio 6 Wellness was updated on September 26, 2026 and Stackr on October 13, 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.*