# F3 /// Fit Flex Fly vs SPENGA 2.0

The clearest difference is ratings volume: SPENGA 2.0 at 13K against F3 /// Fit Flex Fly's 1. SPENGA 2.0 also leads on monetization model (free vs ad-supported). F3 /// Fit Flex Fly's advantage is update cadence (every 3 weeks vs every 5 weeks). On price, rating, ads and in-app purchases 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 F3 /// Fit Flex Fly against 5.0 for SPENGA 2.0. That said, the two scores are not equally well evidenced: SPENGA 2.0 has 13K ratings behind it against 1, so its average is the more settled of the two.

F3 /// Fit Flex Fly ships an update every 3 weeks, SPENGA 2.0 every 5 weeks. The most recent releases landed on October 8, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | F3 /// Fit Flex Fly | SPENGA 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/f3-fit-flex-fly/id1080746213/reviews)** | [5.0 (13K ratings)](https://appshunter.io/ios/app/spenga-20/id1553346589/reviews) |
| Number of ratings | 1 | **13K** |
| Positive reviews | — | 84.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Ad-supported | **Free** |
| Size | 192 MB | 72 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Real Fitness Indy LLC dba F3 Fit Flex Fly](https://appshunter.io/developer/1545137834) | [Geisler Young](https://appshunter.io/developer/369530382) |

## What reviewers say

### F3 /// Fit Flex Fly

[App page](https://appshunter.io/ios/app/f3-fit-flex-fly/id1080746213)

Plan and schedule fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location details. Optimize your fitness routine with convenient scheduling.

**Highlights:** View class schedules, Sign up for classes, Access studio location, Schedule from your device, Optimize fitness time

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

**In-app purchases:** none


### SPENGA 2.0

[App page](https://appshunter.io/ios/app/spenga-20/id1553346589)

Easily plan and schedule fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location and contact details. Optimize your fitness routine with convenient scheduling.

**Highlights:** View class schedules, Sign up for classes, Access studio location, Contact studio information, Mobile class planning

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

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent workout format
- 🤩 Motivating and encouraging instructors
- 🏆 Challenging yet inclusive workout experience
- 🧘‍♀️ Well-balanced blend of spin, strength, and yoga
- 🧹 Clean and sanitized facilities

**What reviewers complain about**

- 🐛 Ongoing app issues (inaccurate tracking, crashes, bugs)
- ⚠️ Lack of developer support and timely fixes
- 🤔 Inconsistent app performance and data accuracy

**Reported bugs**

- Spin stats not accurately tracked
- App crashes and data sync issues
- Waitlist notifications not working

**Requested features**

- Ability to choose a specific bike
- Display class ranking and performance metrics
- Workout descriptions and targeting details


## Frequently asked questions

### Is F3 /// Fit Flex Fly free?

F3 /// Fit Flex Fly is free to download, with no in-app purchases.

### Is SPENGA 2.0 free?

SPENGA 2.0 is free to download, with no in-app purchases.

### Which has better reviews, F3 /// Fit Flex Fly or SPENGA 2.0?

F3 /// Fit Flex Fly is rated higher. F3 /// Fit Flex Fly averages 5.0 out of 5 from 1 ratings, while SPENGA 2.0 averages 5.0 from 13K ratings.

### Do F3 /// Fit Flex Fly or SPENGA 2.0 have ads?

Neither F3 /// Fit Flex Fly nor SPENGA 2.0 shows ads.

### Which is updated more often, F3 /// Fit Flex Fly or SPENGA 2.0?

F3 /// Fit Flex Fly ships an update every 3 weeks, and SPENGA 2.0 every 5 weeks. Most recently, F3 /// Fit Flex Fly was updated on October 8, 2026 and SPENGA 2.0 on October 28, 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.*