# RayLab vs 312

The clearest difference is rating: RayLab at 4.6 against 312's 1.0. RayLab also leads on ratings volume (63 vs 1) and iOS requirement (11.0 vs 15.0). 312's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price, update cadence, monetization model 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. 312 asks for nothing beyond the download.

RayLab holds the better App Store score, 4.6 against 1.0. 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, 312 every 3 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | RayLab | 312 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (63 ratings)](https://appshunter.io/ios/app/raylab/id710190065/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/312-49-chfi-forensics-prep/id6757841408/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 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 39 MB | 27 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kamyar Ghandi](https://appshunter.io/developer/710190068) | [Davy Raitt](https://appshunter.io/developer/1795318281) |

## 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 |


### 312

[App page](https://appshunter.io/ios/app/312-49-chfi-forensics-prep/id6757841408)

Prepare for your EC-Council CHFI certification exam with over 500 practice questions. Study in short sessions, track your progress, and master key digital forensics concepts. Features text-to-speech and dark mode for convenient learning.

**Highlights:** 500+ practice questions, 5-minute study sessions, Progress tracking, Remove mastered questions, Text-to-speech support, Dark mode

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

**In-app purchases:** none


## Frequently asked questions

### Is RayLab free?

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

### Is 312 free?

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

### Which has better reviews, RayLab or 312?

RayLab is rated higher. RayLab averages 4.6 out of 5 from 63 ratings, while 312 averages 1.0 from 1 ratings.

### Do RayLab or 312 have ads?

RayLab shows ads; 312 does not.

### Which is updated more often, RayLab or 312?

RayLab ships an update every 6 weeks, and 312 every 3 months. Most recently, RayLab was updated on October 7, 2026 and 312 on October 6, 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.*