# OPYC vs Juno

The clearest difference is rating: Juno at 3.8 against OPYC's 2.6. Juno also leads on review sentiment (62% vs 20%) and ratings volume (323 vs 8). OPYC's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Juno sells 4 one-off in-app purchases. OPYC asks for nothing beyond the download.

Juno holds the better App Store score, 3.8 against 2.6. That said, the two scores are not equally well evidenced: Juno has 323 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 20% of OPYC's written reviews are positive against 62% of Juno's.

OPYC ships an update every 3 months, Juno monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OPYC | Juno |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (8 ratings)](https://appshunter.io/ios/app/opyc/id1217040844/reviews) | **[3.8 (323 ratings)](https://appshunter.io/ios/app/juno-new-origins/id6475594930/reviews)** |
| Number of ratings | 8 | **323** |
| Positive reviews | 20.0% of reviews | **61.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 412 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Omar reis](https://appshunter.io/developer/687921629) | [Jundroo, LLC](https://appshunter.io/developer/311852133) |

## What reviewers say

### OPYC

[App page](https://appshunter.io/ios/app/opyc/id1217040844)

Experience realistic sailing with this physics-based simulation. It uses real-time wind forecasts and offers immersive 3D views with dynamic weather and sea conditions. Compete in races or explore the world by earning in-game coins.

**Highlights:** Physics-based sailing simulation, Real-time wind forecasts, Immersive 3D view, Weather routing optimization, Create races and regattas, Earn in-game coins

**Features:** macOS Compatibility

**In-app purchases:** none


### Juno

[App page](https://appshunter.io/ios/app/juno-new-origins/id6475594930)

Build and test rockets, planes, and cars with realistic physics in a 3D aerospace sandbox. Progress through a career mode, unlock new technology, and share your creations with a global community.

**Highlights:** 3D aerospace sandbox, Realistic physics simulation, Career mode with tech tree, Customizable part resizing and reshaping, Download and share user-created crafts, Realistic orbit simulation, Interactive tutorials

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Engineer Bundle | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Sandbox Bundle | $2.99 | one-time |
| Career Bundle | $4.99 | one-time |

**What reviewers like**

- 🚀 Great graphics
- 👍 Interesting and fun gameplay
- 🚀 Impressive 3D simulation
- 👍 Detailed rocket/plane building
- 🚀 Realistic physics

**What reviewers complain about**

- 🐛 Buggy and crashes frequently
- 🔧 Complicated controls and UI, especially on mobile
- 💰 Paywall for many features
- 🔧 Lack of tutorials or guidance for beginners
- 🔧 Difficult to delete or modify existing builds

**Reported bugs**

- Engines not igniting properly
- Inability to restore purchases
- Sandbox mode missing key parts
- Severe performance issues on some devices
- Inconsistent part movement and attachment

**Requested features**

- Add more plane and rocket parts
- Improve mobile optimization and controls
- Implement a more comprehensive tutorial system
- Add a 'delete all' or 'clear' option
- Introduce a free sandbox mode with all features unlocked


## Frequently asked questions

### Is OPYC free?

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

### Is Juno free?

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

### Which has better reviews, OPYC or Juno?

Juno is rated higher. OPYC averages 2.6 out of 5 from 8 ratings, while Juno averages 3.8 from 323 ratings.

### Do OPYC or Juno have ads?

Juno shows ads; OPYC does not.

### Which is updated more often, OPYC or Juno?

OPYC ships an update every 3 months, and Juno monthly. Most recently, OPYC was updated on October 24, 2026 and Juno on October 25, 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.*