Comparison

LightSpectrum Pro vs TradeSimuFx

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

Head to head
About

LightSpectrum Pro

Measure light source color temperature and spectrum accurately without expensive equipment. View the color spectrum from 360nm to 800nm, and analyze the white point on the CIE 1931 diagram. Overlay filtered wavelengths on camera images to see frequency reflections and intensity.

Highlights
  • Color temperature measurement
  • Color spectrum analysis (360nm-800nm)
  • CIE 1931 white point display
  • Wavelength filtering and overlay
  • High accuracy compared to professional devices
Features
Currently charting
Read full description

With LightSpectrumPro EVO you can measure the color temperature of a light source without having to spend hundreds of dollars on professional devices. LightSpectrumPro EVO has an error of 2 - 8% compared to existing professional products on the market. in addition to the color temperature measurement in Kelvin, LightSpectrumPro EVO allows you to view the color spectrum of the light being examined with a band ranging from 360nm to 800nm. in addition to the spectrum it is possible to display the position of the white point on the CIE 1931 diagram and to apply a filter for wavelengths to display in overlay on the image captured by the cameras which elements reflect a specific frequency and with what intensity.

About

TradeSimuFx

Practice forex trading with historical chart data and analysis tools. This simulator offers no real-money features, focusing solely on educational practice. Analyze past market movements and test trading strategies without financial risk.

Highlights
  • Historical forex chart playback
  • Practice trading without real money
  • Analysis tools
  • Support for 20 currency pairs
  • Multiple timeframes available
  • Fixed spread simulation
Read full description

Replay historical Forex charts to practice and test your trading. This app has no real-money trading features (no deposits or withdrawals, no live orders, and no broker account linking). Features - Replay past Forex charts. - Chart data is available from 2015 onwards. - 20 symbols: 19 currency pairs, including EURUSD and USDJPY, plus XAUUSD (gold). - Timeframes: 1m, 3m, 5m, 10m, 15m, 30m, 1h, 2h, 4h, 8h, 12h, daily, weekly, and monthly. About the data - All data is historical. It is not real-time. - Data for Forex currency pairs is added every Sunday for the previous week. - The calendar for each new month is added through app updates. To view charts for the next month, please update the app to the latest version. - XAUUSD data is added only with app updates, not every week. - No data is added between Christmas and New Year. About accuracy - This app uses 1-minute data, so second-based timeframes are not available. - The spread is a fixed value for each currency pair (you can change it in the settings). Actual spreads change constantly, so results may differ from real trading, especially during news releases and around the daily rollover at the New York close. - Pips are converted to amounts using a fixed exchange rate for each month. Actual rates change constantly, so the calculated amounts are approximate. - We aim to calculate each indicator as accurately as possible, but values may differ slightly from other charting software due to differences in price data between brokers. Notes - This app is a simulator. You cannot buy or sell real currencies with it. - This app does not solicit or recommend Forex trading. - There is no Mac version. For more details, please visit our developer website: https://tradesimu.com/en By downloading this app, you agree to our Terms of Service: https://tradesimu.com/en/terms Privacy Policy: https://tradesimu.com/en/privacy

Screenshots

LightSpectrum Pro4 screens
TradeSimuFx4 screens

Verdict

The call

The clearest difference is review sentiment: TradeSimuFx at 95% against LightSpectrum Pro's 28%. TradeSimuFx also leads on rating (4.8 vs 4.1) and update cadence (every 10 days vs every 3 months). LightSpectrum Pro's advantage is monetization model (free vs paid) and chart position (#89 vs unranked). On price, ads, in-app purchases 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

LightSpectrum Pro costs $1.99 and TradeSimuFx $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

TradeSimuFx holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 39 and 11 respectively. Written reviews point the same way: 28% of LightSpectrum Pro's written reviews are positive against 95% of TradeSimuFx's.

UpkeepUpdate frequency

LightSpectrum Pro ships an update every 3 months, TradeSimuFx every 10 days. Both last shipped on October 18, 2026.

Scorecard6 real differences · 5 level
LightSpectrum Pro versus TradeSimuFx: the parameters behind the verdict, then further details
ParameterLightSpectrum ProTradeSimuFx
Price$1.99$1.99
Rating4.1 (39 ratings)4.8 (11 ratings) — better
Positive reviews28.5% of reviews94.7% of reviews — better
Number of ratings39 — better11
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank#89 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.6
Further details — not scored
Size88 MB26 MB
Age rating4+4+
DeveloperAM PowerSoftwareShuhei Sakai

Customer experience

LightSpectrum Pro

All ratings39 ratings
Positive76.9%
Neutral2.6%
Negative20.5%
Written reviews172 reviews
Positive28.5%
Neutral5.8%
Negative65.7%

TradeSimuFx

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews38 reviews
Positive94.7%
Neutral2.6%
Negative2.6%

Bugs and requests

LightSpectrum Pro

Reported bugs

11 issues
  • App crashes on startup or during use
  • Camera feed not accessible or showing red X icon
  • Screen blinking/flashing on first launch
  • UI elements cut off on larger screens
  • Buttons unresponsive or sticky
Show 6 more
  • App freezes and cannot be exited
  • Black screen on launch
  • Inconsistent readings that change rapidly
  • App stuck on opening screen
  • Camera focus issues on iPhone X and newer models
  • Incompatibility with iOS 5, 6, and newer iPhone models

Requested features

11 requests
  • Spot metering with crosshairs or target reticle
  • Direct DUV (Delta uv) display calculation
  • Flicker detection for light sources
  • Calibration function for improved accuracy
  • Support for fluorescent light preset adjustments
Show 6 more
  • Tap-to-focus camera control
  • Landscape orientation support
  • Ability to disable tutorial tips
  • Screenshot capability in landscape mode
  • Better documentation and user guide
  • Device compatibility information in app store listing

TradeSimuFx

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LightSpectrum Pro

No in-app purchases

None

TradeSimuFx

No in-app purchases

Questions

Is LightSpectrum Pro free?
LightSpectrum Pro costs $1.99, with no in-app purchases.
Is TradeSimuFx free?
TradeSimuFx costs $1.99, with no in-app purchases.
Which has better reviews, LightSpectrum Pro or TradeSimuFx?
TradeSimuFx is rated higher. LightSpectrum Pro averages 4.1 out of 5 from 39 ratings, while TradeSimuFx averages 4.8 from 11 ratings.
Do LightSpectrum Pro or TradeSimuFx have ads?
Neither LightSpectrum Pro nor TradeSimuFx shows ads.
Which is updated more often, LightSpectrum Pro or TradeSimuFx?
LightSpectrum Pro ships an update every 3 months, and TradeSimuFx every 10 days. Most recently, LightSpectrum Pro was updated on October 18, 2026 and TradeSimuFx on October 18, 2026.

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