Comparison

RayLab vs Crystal Flight

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RayLab

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
Read full description

RayLab is an application for design and simulation of optics. It can be used either as a learning tool or for the design of real optical systems. Basic version includes: • Ability to model 2D lenses and mirrors • Full control over placement and shape of optical components • Full control over aspheric surface shape parameters • Full geometric ray tracing • Sequential and Non Sequential analysis • Front Focal Length, Back Focal Length, Principle Surface calculations • Sample Models Upgrade to RayLab Pro enables: • 3D Modeling • Advanced Optical Elements such as Lens Arrays, Diffraction Gratings, Prisms, Fresnel Lenses, etc. • Polarization Ray Tracing * Ray Splitting / Beam Splitter modeling • Multi-Configuration Manager and animation functionality • Ability to perform optimizations of design parameters • Ray Transfer Matrix calculation • Various commercial glass catalogs • Zemax Importer • Multiple Analysis Windows: -- Fan Ray Diagram. -- Wavefront Error Plot. -- Grid Distortion Plot. -- Spot Diagram. -- Chromatic Aberration. -- Gaussian Spot Size. -- Polarization Analyzer. Upgrade is available with in-app purchases of various modules OR as a full featured subscription. • The subscription offers a 7 day free trial period. Subscription begins immediately but payment will only be charged to iTunes Account at the end of the trial period. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • The account will be charged for renewal within 24-hours prior to the end of the current period, at the same monthly price as the original subscription. • You may manage your subscriptions and auto-renewal may be turned off by going to your iTunes Account Settings after purchase. • No cancellation of the current subscription is allowed during active subscription period. • Any unused portion of a free trial period will be forfeited if the subscription is cancelled. Privacy Policy and Terms of Use: https://www.raymak.com/wp/privacy-policy

About

Crystal Flight

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
Read full description

Fly freely in a variety of crystals. To navigate, simply tilt your iPhone or iPad in the direction you want to go.

Screenshots

RayLab4 screens
Crystal Flight4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
RayLab versus Crystal Flight: the parameters behind the verdict, then further details
ParameterRayLabCrystal Flight
PriceFreeFree
Rating4.6 (63 ratings)5.0 (1 ratings) — better
Positive reviews75.0% of reviews—
Number of ratings63 — better1
Update frequencyEvery 6 weeks — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS11.0 — better17.0
Further details — not scored
Size39 MB4 MB
Age rating4+4+
DeveloperKamyar GhandiJeff Weeks

Customer experience

RayLab

All ratings63 ratings
Positive92.1%
Neutral0.0%
Negative7.9%
Written reviews36 reviews
Positive75.0%
Neutral5.6%
Negative19.4%

Crystal Flight

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

RayLab

Subscriptions1
  • RayLab Pro Subscription7 Days trial$3.991 Month
One-time9
  • RayLab Pro UpgradeFree
  • Schott Glass Catalog$0.99
  • Custom Glass Editor$0.99
Show 6 more
  • Advanced Optical Elements$1.99
  • Source and Lens Arrays$1.99
  • Solver/Optimizer Module$3.99
  • 3D Modeling$4.99
  • RayLab Pro 2$19.99
  • RayLab Pro Bundle$19.99
None

Crystal Flight

No in-app purchases

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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