# Flyboys vs PRINCIPLES PROLOGUE

The clearest difference is in-app purchases: PRINCIPLES PROLOGUE at none against Flyboys's 1. PRINCIPLES PROLOGUE also leads on review sentiment (76% vs 45%). Flyboys's advantage is update cadence (weekly vs every 5 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Flyboys sells 1 one-off in-app purchase. PRINCIPLES PROLOGUE asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Flyboys against 4.3 for PRINCIPLES PROLOGUE. Both are backed by a comparable volume of ratings — 95 and 58 respectively. Written reviews are what separate them: 45% of Flyboys's written reviews are positive against 76% of PRINCIPLES PROLOGUE's.

Flyboys ships an update weekly, PRINCIPLES PROLOGUE every 5 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Flyboys | PRINCIPLES PROLOGUE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (95 ratings)](https://appshunter.io/ios/app/flyboys/id1616669569/reviews) | **[4.3 (58 ratings)](https://appshunter.io/ios/app/principles-prologue/id1620294510/reviews)** |
| Number of ratings | **95** | 58 |
| Positive reviews | 45.0% of reviews | **75.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 265 MB | 285 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flyboys Games s.r.o.](https://appshunter.io/developer/1616541838) | [COLOPL, Inc.](https://appshunter.io/developer/376314072) |

## What reviewers say

### Flyboys

[App page](https://appshunter.io/ios/app/flyboys/id1616669569)

Embark on a journey to master flight by building and improving a flying bicycle. Overcome challenges, learn from trials, and compete with others in aerial races to achieve success.

**Highlights:** Build a flying bicycle, Improve flying bike potential, Discover hidden challenges, Race with friends, Compete in aerial challenges

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Us | $5.99 | one-time |

**What reviewers like**

- 🎨 Beautiful artwork and graphics
- 💡 Original and great concept
- 🕹️ Addictive casual gameplay
- 🎶 Great music and art
- ⚖️ Realistic mechanics

**What reviewers complain about**

- 😫 Extremely difficult to master
- 😩 Frustrating controls
- 📉 Inconsistent take off mechanic
- ❓ Unclear how to progress/unlock upgrades
- 🔄 Repetitive and monotonous gameplay

**Reported bugs**

- Propeller doesn't engage consistently
- Slider for propeller doesn't work most of the time
- Landing is inconsistent
- Stalls on take off
- Controls go from no response to over-response

**Requested features**

- Add more levels after 3000m
- Add new aircraft after achieving Flyboys Badge
- Add more variety or different challenges
- Add altitude/speed reading
- Make the propeller automatic


### PRINCIPLES PROLOGUE

[App page](https://appshunter.io/ios/app/principles-prologue/id1620294510)

Explore a mysterious underground world filled with ancient ruins and advanced technology. High-definition graphics and spatial audio immerse you in an abyssal environment as you uncover the secrets of a hidden cave.

**Highlights:** High-definition graphics, Spatial audio, Abyssal underground world, Mysterious ancient ruins, Explorer narrative

**In-app purchases:** none

**What reviewers like**

- ✨ Stunning graphics and visuals
- 🚀 Smooth performance on high-end devices
- 💡 Innovative technology demonstration
- 🎧 Excellent audio quality
- 🤩 High potential for future games

**What reviewers complain about**

- ⏳ Very short gameplay duration
- 📱 Overheats on max graphics
- 📉 Performance issues on lower-end devices
- 🕹️ Clunky or imprecise controls
- 🤔 Unclear game purpose or objectives

**Reported bugs**

- Game resets to start location
- Game crashes or won't open
- Lag and stuttering during gameplay
- Freezing issues

**Requested features**

- Full, playable version of the game
- More gameplay content and continuation
- Improved optimization for wider device compatibility
- Adjustable graphics settings
- Controller support


## Frequently asked questions

### Is Flyboys free?

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

### Is PRINCIPLES PROLOGUE free?

PRINCIPLES PROLOGUE is free to download, with no in-app purchases.

### Which has better reviews, Flyboys or PRINCIPLES PROLOGUE?

PRINCIPLES PROLOGUE is rated higher. Flyboys averages 4.3 out of 5 from 95 ratings, while PRINCIPLES PROLOGUE averages 4.3 from 58 ratings.

### Do Flyboys or PRINCIPLES PROLOGUE have ads?

Neither Flyboys nor PRINCIPLES PROLOGUE shows ads.

### Which is updated more often, Flyboys or PRINCIPLES PROLOGUE?

Flyboys ships an update weekly, and PRINCIPLES PROLOGUE every 5 months. Most recently, Flyboys was updated on November 3, 2026 and PRINCIPLES PROLOGUE 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.*