Comparison

Be Safe Be Smart vs Light Unit Converter

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

Head to head
About

Be Safe Be Smart

This app provides personal safety tools, including an SOS button for emergency response, location tracking for continuous monitoring, and advisory calls for support. It integrates with custom wearables for enhanced protection.

Highlights
  • SOS emergency response
  • 24/7 call center staffed
  • Location tracking
  • Advisory calls for support
  • Custom wearable integration
  • Intuitive end-user functionality
Features
Read full description

Five Connect brings together an extensive suite of unique & ground breaking products & services for those who need to have the assurance of an intelligent, bespoke and secure range of personal protection tools. Be Safe Be Smart provides the following features when enabled; - SOS, trigger a emergency response by our call centres which are staffed 24 hours a day, 365 days a year. - Track Me, ask the app to track you location and keep the ARC (Alarm Receiving Centres in Europe) informed of your location. - Advisory call, make a call for support or advice in any situation and our call centre will be happy to help and advice. We also provide support using our custom wearables which connect to the app using Bluetooth 4.0. The difference is that we have experience that dates back to the 1970’s in providing security systems,intelligent services and protective devices from the world leaders to personal clients. Included in our application is proprietary software, with intuitive end-user functionality that is used to its full effect in legacy and dedicated devices and use probably the most up to date, state-of-the-art Alarm Receiving Centre (ARC). This delivers the ultimate in protection and life support system for any lone worker or vulnerable persons anywhere on the globe! DISCLAIMER "Continued use of GPS running in the background can dramatically decrease battery life."

About

Light Unit Converter

This app calculates conversions between various light units, including shortwave radiation, photosynthetic photon flux, lux, and foot-candles. It supports different light sources like fluorescent, metal halide, high pressure sodium, and sunlight.

Highlights
  • Converts between light units
  • Supports various light sources
  • Calculates shortwave radiation
  • Measures photosynthetic photon flux (PPF, PPFD)
  • Converts lux and foot-candles
Features
Read full description

The Light Unit Converter app from Apogee Instruments calculates the conversions between different light units for various light sources including T5 Sylvania fluorescent lights, metal halide, high pressure sodium, and sunlight. Units include shortwave radiation (SW), photosynthetic photon flux (PPF, PPFD), Lux (lx) and Foot-candles (fc, lm/ft2, or ft-c). Definitions: Shortwave Radiation - Shortwave radiation (SW) is radiant energy with wavelengths in the visible (VIS), near-ultraviolet (UV), and near-infrared (NIR) spectra. There is no standard cut-off for the near-infrared range; therefore, the shortwave radiation range is also variously defined. It may be broadly defined to include all radiation with a wavelength between 0.1μm and 5.0μm or narrowly defined so as to include only radiation between 0.2μm and 3.0μm. There is little radiation flux (in terms of W/m²) to the Earth's surface below 0.2μm or above 3.0μm, although photon flux remains significant as far as 6.0μm, compared to shorter wavelength fluxes. UV-C radiation spans from 0.1μm to .28μm, UV-B from 0.28μm to 0.315μm, UV-A from 0.315μm to 0.4μm, the visible spectrum from 0.4μm to 0.7μm, and NIR arguably from 0.7μm to 5.0μm, beyond which the infrared is thermal. Shortwave radiation is distinguished from longwave radiation. Lux - The lux (symbol: lx) is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square meter. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. It is analogous to the radiometric unit watts per square meter, but with the power at each wavelength weighted according to the luminosity function, a standardized model of human visual brightness perception. Photosynthetic Photon Flux - Photosynthetic Photon Flux (PPF), also known as Photosynthetic Photon Flux Density (PPFD) or Photosynthetically Active Radiation (PAR), designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis. PAR measurement is used in agriculture, forestry and oceanography. One of the requirements for productive farmland is adequate PAR, so PAR is used to evaluate agricultural investment potential. PAR sensors stationed at various levels of the forest canopy measure the pattern of PAR availability and utilization. PAR is normally quantified as µmol photons/m2/s, which is a measure of the photosynthetic photon flux (area) density, or PPFD. PAR can also be expressed in energy units (irradiance, W/m2); this is relevant in energy-balance considerations for photosynthetic organisms. Because photosynthesis is a quantum process, PPFD is generally used by plant biologists. Foot-candle - A foot-candle (sometimes foot candle; abbreviated fc, lm/ft2, or sometimes ft-c) is a non-SI unit of illuminance or light intensity widely used in the United States in photography, film, television, conservation lighting, greenhouse horticulture, the lighting industry, construction-related engineering and in building codes. The name "footcandle" conveys "the illuminance cast on a surface by a one-candela source one foot away". The unit is defined as the amount of illumination the inside surface of a one-foot-radius sphere would be receiving if there were a uniform point source of one candela in the exact center of the sphere. Alternatively, it can be defined as the illuminance on a one-square foot surface of which there is a uniformly distributed flux of one lumen. Thus one foot-candle is equal to one lumen per square foot or approximately 10.764 lux. In practical applications, as when measuring room illumination, it is very difficult to measure illuminance more accurately than ±10%, and for many purposes it is quite sufficient to think of one footcandle as about ten lux as is typically done in the lighting industry.

Screenshots

Be Safe Be Smart2 screens
Light Unit Converter4 screens

Verdict

The call

The clearest difference is update cadence: Light Unit Converter at every 6 weeks against Be Safe Be Smart's every 14 months. Light Unit Converter also leads on iOS requirement (8.0 vs 12.0). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Be Safe Be Smart ships an update every 14 months, Light Unit Converter every 6 weeks. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Be Safe Be Smart versus Light Unit Converter: the parameters behind the verdict, then further details
ParameterBe Safe Be SmartLight Unit Converter
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 14 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.08.0 — better
Further details — not scored
Size39 MB6 MB
Age rating4+4+
Developer1 LGM HOLDINGS LTDApogee Instruments

Customer experience

Be Safe Be Smart

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Light Unit Converter

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Be Safe Be Smart

No in-app purchases

None

Light Unit Converter

No in-app purchases

Questions

Is Be Safe Be Smart free?
Be Safe Be Smart is free to download, with no in-app purchases.
Is Light Unit Converter free?
Light Unit Converter is free to download, with no in-app purchases.
Do Be Safe Be Smart or Light Unit Converter have ads?
Neither Be Safe Be Smart nor Light Unit Converter shows ads.
Which is updated more often, Be Safe Be Smart or Light Unit Converter?
Be Safe Be Smart ships an update every 14 months, and Light Unit Converter every 6 weeks. Most recently, Be Safe Be Smart was updated on October 13, 2026 and Light Unit Converter on October 2, 2026.

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