# RayLab vs ONELAB

The clearest difference is in-app purchases: ONELAB at none against RayLab's 10. ONELAB also leads on ads (none vs shown) and rating (5.0 vs 4.6). RayLab's advantage is ratings volume (63 vs 1). On price, update cadence 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. ONELAB asks for nothing beyond the download.

ONELAB 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. Written reviews point the same way: 75% of RayLab's written reviews are positive against 100% of ONELAB's.

RayLab ships an update every 6 weeks, ONELAB every 2 months. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | RayLab | ONELAB |
| --- | --- | --- |
| 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/onelab/id845930897/reviews)** |
| Number of ratings | **63** | 1 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 39 MB | 95 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kamyar Ghandi](https://appshunter.io/developer/710190068) | [Christophe Geuzaine](https://appshunter.io/developer/845930900) |

## 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 |


### ONELAB

[App page](https://appshunter.io/ios/app/onelab/id845930897)

This application provides a finite element package for simulating multi-physics problems. It integrates with open-source tools for mesh generation and solving, offering ready-to-use examples for electromagnetics, thermics, and mechanics.

**Highlights:** Finite element package, Multi-physic problem simulation, Electromagnetics, thermics, mechanics, Integrates with Gmsh and GetDP, Ready-to-use examples, Add new models via zip archives

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RayLab free?

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

### Is ONELAB free?

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

### Which has better reviews, RayLab or ONELAB?

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

### Do RayLab or ONELAB have ads?

RayLab shows ads; ONELAB does not.

### Which is updated more often, RayLab or ONELAB?

RayLab ships an update every 6 weeks, and ONELAB every 2 months. Most recently, RayLab was updated on October 3, 2026 and ONELAB 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.*