Comparison

Simple Units Converter vs Illuminance Conversion

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

Head to head
About

Simple Units Converter

Features
Read full description

Simple Units Converter is a general-use units conversion calculator good for anyone interested in converting from one set of units to another. It was developed with ease of use as a primary objective. Has 586 different units and 47 different dimensions: Acceleration (27) Angle (21) Area (31) Change in Temperature (4) Cooking (27) Data Storage (16) Density (16) Electric Charge (8) Electric Current (5) Electric Dipole (3) Electric Potential Difference (3) Electrical Conductivity (14) Energy (40) Enthalpy Mass (4) Enthalpy Molar (4) Enthalpy Normal Volume (2) Enthalpy Volume (4) Flow (Volume) (22) Force (16) Frequency (7) Fuel Consumption (15) Illuminance (5) Length / Distance (30) Luminance (8) Luminous Intensity (4) Magnetic Flux (6) Magnetic Flux Density (4) Molar Energy (7) Molar Heat Capacity (2) Molar Mass (13) Power / Heat Flow Rate (34) Pressure (28) Radiation - Absorbed Dose (8) Radiation - Equivalent Dose (4) Radiation - Exposure (3) Radiation - Source Activity (5) Specific Heat (5) Speed / Velocity (14) Temperature (7) Thermal Conductivity (8) Time (20) Torque (6) Viscosity - Dynamic (9) Viscosity - Kinematic (4) Volume (71) Volume - Dry (6) Weight / Mass (36)

About

Illuminance Conversion

Features
Read full description

Illuminance Conversion provides a convenient and precise way to convert between various units of measurement, bridging the gap between different measurement systems. This tool is invaluable for engineers, translators, and anyone whose work involves dealing with quantities expressed in diverse units. In photometry, illuminance refers to the total luminous flux that falls on a surface per unit area. It quantifies the intensity of incident light, taking into account the wavelength-weighted luminosity function to align with human perception of brightness. Similarly, luminous emittance signifies the luminous flux emitted from a surface per unit area and is also referred to as luminous exitance. The lux (symbol: lx) is the official SI unit for both illuminance and luminous emittance. It is the preferred unit in photometry for measuring light intensity, with wavelengths adjusted according to the luminosity functionβ€”a standardized representation of human brightness perception. In English, "lux" is used in both singular and plural forms. Illuminance Conversion covers a wide range of measurement units, including Foot-candles (fc), Kiloluxes (klx), Lumens per square centimeter (lm/cmΒ²), Lumens per square meter (lm/mΒ²), Luxes (lx), Microluxes (Β΅lx), Milliluxes (mlx), Noxes (Nox), Phots (ph), and more. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Simple Units Converter4 screens
Illuminance Conversion4 screens

Verdict

The call

The clearest difference is update cadence: Simple Units Converter at every 8 months against Illuminance Conversion's every 30 months. Simple Units Converter also leads on price ($0.99 vs $2.99). Illuminance Conversion's advantage is iOS requirement (13 vs 16.2). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Simple Units Converter costs $0.99 and Illuminance Conversion $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simple Units Converter ships an update every 8 months, Illuminance Conversion every 30 months. The most recent releases landed on August 8, 2026 and September 10, 2026 respectively.

Scorecard3 real differences Β· 3 level
Simple Units Converter versus Illuminance Conversion: the parameters behind the verdict, then further details
ParameterSimple Units ConverterIlluminance Conversion
Price$0.99 β€” better$2.99
Update frequencyEvery 8 months β€” betterEvery 30 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS16.213 β€” better
Further details β€” not scored
Size9 MB2 MB
Age rating4+4+
DeveloperMind Trends LLCNitrio

In-app purchases

None

Simple Units Converter

No in-app purchases

None

Illuminance Conversion

No in-app purchases

Questions

Is Simple Units Converter free?
Simple Units Converter costs $0.99, with no in-app purchases.
Is Illuminance Conversion free?
Illuminance Conversion costs $2.99, with no in-app purchases.
Do Simple Units Converter or Illuminance Conversion have ads?
Neither Simple Units Converter nor Illuminance Conversion shows ads.
Which is updated more often, Simple Units Converter or Illuminance Conversion?
Simple Units Converter ships an update every 8 months, and Illuminance Conversion every 30 months. Most recently, Simple Units Converter was updated on August 8, 2026 and Illuminance Conversion on September 10, 2026.

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