# RayLab vs Crystal Flight

The clearest difference is in-app purchases: Crystal Flight at none against RayLab's 10. Crystal Flight also leads on ads (none vs shown) and rating (5.0 vs 4.6). RayLab's advantage is ratings volume (63 vs 1) and update cadence (every 6 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. RayLab sells 10 in-app purchases, starting at $3.99 per month. Crystal Flight asks for nothing beyond the download.

Crystal Flight holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: RayLab has 63 ratings behind it against 1, so its average is the more settled of the two.

RayLab ships an update every 6 weeks, Crystal Flight every 5 months. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | RayLab | Crystal Flight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (63 ratings)](https://appshunter.io/ios/app/raylab/id710190065/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crystal-flight/id1436396839/reviews)** |
| Number of ratings | **63** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 39 MB | 4 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Kamyar Ghandi](https://appshunter.io/developer/710190068) | [Jeff Weeks](https://appshunter.io/developer/326104308) |

## What reviewers say

### RayLab

[App page](https://appshunter.io/ios/app/raylab/id710190065)

Design and simulate optical systems with this powerful tool. Explore 2D and 3D models, perform advanced ray tracing, and analyze optical performance. Ideal for learning or professional design.

**Highlights:** 2D/3D optical modeling, Geometric ray tracing, Sequential and non-sequential analysis, Advanced optical elements, Polarization ray tracing, Design optimization, Glass catalogs

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RayLab Pro Subscription | $3.99 | per month |
| RayLab Pro Upgrade | Free | one-time |
| Schott Glass Catalog | $0.99 | one-time |
| Custom Glass Editor | $0.99 | one-time |
| Advanced Optical Elements | $1.99 | one-time |
| Source and Lens Arrays | $1.99 | one-time |
| Solver/Optimizer Module | $3.99 | one-time |
| 3D Modeling | $4.99 | one-time |
| RayLab Pro 2 | $19.99 | one-time |
| RayLab Pro Bundle | $19.99 | one-time |


### Crystal Flight

[App page](https://appshunter.io/ios/app/crystal-flight/id1436396839)

Experience free flight within diverse crystal environments. Navigate your journey by simply tilting your iPhone or iPad to control direction.

**Highlights:** Free flight simulation, Crystal environments, Tilt-to-navigate controls, iPhone and iPad support

**In-app purchases:** none


## Frequently asked questions

### Is RayLab free?

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

### Is Crystal Flight free?

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

### Which has better reviews, RayLab or Crystal Flight?

Crystal Flight is rated higher. RayLab averages 4.6 out of 5 from 63 ratings, while Crystal Flight averages 5.0 from 1 ratings.

### Do RayLab or Crystal Flight have ads?

RayLab shows ads; Crystal Flight does not.

### Which is updated more often, RayLab or Crystal Flight?

RayLab ships an update every 6 weeks, and Crystal Flight every 5 months. Most recently, RayLab was updated on October 7, 2026 and Crystal Flight on October 2, 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.*