Comparison

iPhasematch vs RayLab

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

Head to head
About

iPhasematch

Calculate nonlinear optical effects like second-harmonic generation and spontaneous parametric down-conversion. This app provides phasematching orientations, nonlinear coefficients, and tolerance values for various crystals based on Sellmeier equations.

Highlights
  • Phasematching condition calculation
  • Sellmeier equation integration
  • Effective nonlinear optical coefficients
  • Walk-off and angular tolerance
  • Temperature tolerance
  • Supported crystal list
Features
Read full description

iPhasematch allows you to calculate the phasematching condition of nonlinear wavelength conversion such as SHG or SFM based on published Sellmeier equiations. Downconversion (OPO) can be figured out by the reverse of SFM. It is a subset of the 'Qmix' function of a famous Windows software SNLO by Dr. Arlee Smith. This App does some of what SNLO does on your iOS device. It takes the crystal, two input wavelengths, and temperature and gives the phasematching orientations, effective nonlinear optical coefficients, walk-off angles, angular tolerance and temperature tolerance. In case of SHG, it also gives spectral tolerance. In biaxial crystals, it gives only the phasematching orientations in the principal planes, i.e., either theta=90 deg. or phi=0 or 90deg. Currently supported crystals: BBO, BiBO, CBO, CLBO, LB4, LBO, KBBF, KDP, KD*P, KN, KTP, Mg:LN, Mg:sLN, RBBF, RTP, YAB. NOTE: dn/dT data for LB4 was picked up from discrete data points in the reference and linearly extrapolated. Interface should be intuitive, giving phasematching with a tap of "PM" button,refractive index with "index" button and group index with "Gp.Idx" button, for the given condition (crystal, wavelengths, and temperature). DISCLAIMER: I cannot be held responsible for the result of the calculation it gives. I make every effort to make it accurate, and bug-free, but there could be errors in code. Please just use this on your own discretion.

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

Screenshots

iPhasematch4 screens
RayLab4 screens

Verdict

The call

The clearest difference is in-app purchases: iPhasematch at none against RayLab's 10. iPhasematch also leads on ads (none vs shown) and rating (5.0 vs 4.6). RayLab's advantage is update cadence (every 6 weeks vs every 7 months) and ratings volume (63 vs 2). 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. iPhasematch asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iPhasematch 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 2, so its average is the more settled of the two.

UpkeepUpdate frequency

iPhasematch ships an update every 7 months, RayLab every 6 weeks. The most recent releases landed on September 20, 2026 and October 3, 2026 respectively.

Scorecard7 real differences · 3 level
iPhasematch versus RayLab: the parameters behind the verdict, then further details
ParameteriPhasematchRayLab
PriceFreeFree
Rating5.0 (2 ratings) — better4.6 (63 ratings)
Positive reviews—75.0% of reviews
Number of ratings263 — better
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.611.0 — better
Further details — not scored
Size6 MB39 MB
Age rating4+4+
DeveloperYushi KanedaKamyar Ghandi

Customer experience

iPhasematch

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

RayLab

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

In-app purchases

None

iPhasematch

No 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

Questions

Is iPhasematch free?
iPhasematch is free to download, with no in-app purchases.
Is RayLab free?
RayLab is free to download, with in-app purchases available.
Which has better reviews, iPhasematch or RayLab?
iPhasematch is rated higher. iPhasematch averages 5.0 out of 5 from 2 ratings, while RayLab averages 4.6 from 63 ratings.
Do iPhasematch or RayLab have ads?
RayLab shows ads; iPhasematch does not.
Which is updated more often, iPhasematch or RayLab?
iPhasematch ships an update every 7 months, and RayLab every 6 weeks. Most recently, iPhasematch was updated on September 20, 2026 and RayLab on October 3, 2026.

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