Comparison

OSpectrometer vs TourBuilder WalkAR

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

Head to head
About

OSpectrometer

This app uses your device's camera and screen to perform basic optical spectroscopy. Analyze the visible light spectrum of objects, map light wavelengths to RGB values, and save or share your findings. It functions offline without external hardware.

Highlights
  • Visible light spectrum analysis
  • RGB color value mapping
  • Wavelength selection and scanning
  • Front camera reflection sensing
  • Save and share results
  • Offline functionality
Features
Read full description

Optical spectroscopy in the visible light spectrum is a commonly used tool in different fields such as health, manufacturing, art, and forensic research. OSpectrometer implements basic spectrometer functions using the built-in camera and screen without requiring external devices or programs. - Visible light spectrum is transformed and mapped to a function that generates RGB (Red Green Blue) color values - A specific light wavelength can be selected and used to illuminate a desired target (i.e., close to the screen) - The whole spectrum or a specific part of the spectrum can be selected and scanned - Front camera is used to sense the reflection from the target object - Consistent and repeatable reflection/absorption amplitude with respect to the color spectrum - The result can be saved and shared - Works offline, no need to connect to any network or internet Privacy-policy: https://software.nanorescenter.com/osprectrometer-privacy-policy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

TourBuilder WalkAR

Features
Read full description

Discover the future of group touring! Dive into a unique hybrid experience that seamlessly combines live human commentary with the magic of Augmented Reality (AR). Human Touch with Tech Magic: Our system unites the expertise of human guides with immersive AR. Experience the best of both worlds - heartfelt storytelling and state-of-the-art digital enhancements. Designed for Large Groups: Never miss a word or a sight! Whether you're guiding a small group or a large assembly, our system ensures everyone gets an immersive experience. Offline Capability: Exploring an area with poor connectivity? No worries! Our offline functionality is perfect for walking tours, ensuring uninterrupted experiences. User-Friendly: Intuitive interface, making it easy for guides to operate and participants to engage.

Screenshots

OSpectrometer4 screens
TourBuilder WalkAR1 screens

Verdict

The call

The clearest difference is in-app purchases: TourBuilder WalkAR at none against OSpectrometer's 2. OSpectrometer's advantage is update cadence (every 2 weeks vs every 23 months). On price, ads, device support and iOS requirement 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. OSpectrometer sells 2 in-app purchases, starting at $2.99 per month. TourBuilder WalkAR asks for nothing beyond the download.

UpkeepUpdate frequency

OSpectrometer ships an update every 2 weeks, TourBuilder WalkAR every 23 months. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 8 level
OSpectrometer versus TourBuilder WalkAR: the parameters behind the verdict, then further details
ParameterOSpectrometerTourBuilder WalkAR
PriceFreeFree
Rating2.0 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeks — betterEvery 23 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size71 MB5 MB
Age rating4+4+
DeveloperNANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETIARtGlass USA LLC

In-app purchases

2 purchases

OSpectrometer

Subscriptions2
  • month3 Days trial$2.991 Month
  • year3 Days trial$9.991 Year
None

TourBuilder WalkAR

No in-app purchases

Questions

Is OSpectrometer free?
OSpectrometer is free to download, with in-app purchases available.
Is TourBuilder WalkAR free?
TourBuilder WalkAR is free to download, with no in-app purchases.
Do OSpectrometer or TourBuilder WalkAR have ads?
Neither OSpectrometer nor TourBuilder WalkAR shows ads.
Which is updated more often, OSpectrometer or TourBuilder WalkAR?
OSpectrometer ships an update every 2 weeks, and TourBuilder WalkAR every 23 months. Most recently, OSpectrometer was updated on November 3, 2026 and TourBuilder WalkAR on November 12, 2026.

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