# StreamFit Member vs Diesel Optimization

The clearest difference is in-app purchases: Diesel Optimization at none against StreamFit Member's 1. StreamFit Member's advantage is update cadence (every 9 days vs every 2 months) and device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. StreamFit Member sells 1 one-off in-app purchase. Diesel Optimization asks for nothing beyond the download.

StreamFit Member ships an update every 9 days, Diesel Optimization every 2 months. The most recent releases landed on October 19, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | StreamFit Member | Diesel Optimization |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (232 ratings)](https://appshunter.io/ios/app/streamfit-member/id1599280771/reviews)** | — |
| Number of ratings | **232** | — |
| Positive reviews | 49.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 71 MB | 40 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Dustin Bosscher](https://appshunter.io/developer/715044600) | [DIESEL FITNESS, INC.](https://appshunter.io/developer/1886793917) |

## What reviewers say

### StreamFit Member

[App page](https://appshunter.io/ios/app/streamfit-member/id1599280771)

This comprehensive platform streamlines gym operations and enhances the member experience. It offers features like custom branding, messaging, leaderboards, and easy check-ins, fostering community and engagement within fitness facilities. Manage memberships, track progress, and even run competitions and challenges.

**Highlights:** Custom App/Branding, Messaging & Chat, Leaderboards, Easy Check-ins, PRs & Benchmarks, Competitions, Nutrition Challenges

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Class Registration | $19.99 | one-time |

**What reviewers like**

- 🚀 All-in-one app
- 👍 Continuously improving
- 💡 Responsive customer service
- 🚀 Comprehensive gym management
- 👍 Easy to use

**What reviewers complain about**

- 🐛 Buggy and unintuitive
- 🐛 Clunky user experience
- 🐛 Lacking basic functionality
- 🐛 Unreliable performance
- 🐛 Difficult to navigate

**Reported bugs**

- Frequent login issues
- Missing or inaccurate data
- Unreliable notifications
- Compatibility problems with older devices
- Security vulnerabilities

**Requested features**

- Ability to unregister from classes
- Improved leaderboard and history tracking
- Easier access to past workout details
- Customizable class/workout favorites
- Better integration with external apps


### Diesel Optimization

[App page](https://appshunter.io/ios/app/diesel-optimization/id6760916740)

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

**In-app purchases:** none


## Frequently asked questions

### Is StreamFit Member free?

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

### Is Diesel Optimization free?

Diesel Optimization is free to download, with no in-app purchases.

### Do StreamFit Member or Diesel Optimization have ads?

Neither StreamFit Member nor Diesel Optimization shows ads.

### Which is updated more often, StreamFit Member or Diesel Optimization?

StreamFit Member ships an update every 9 days, and Diesel Optimization every 2 months. Most recently, StreamFit Member was updated on October 19, 2026 and Diesel Optimization on October 1, 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.*