Comparison

Deflection Lite vs Lighting Calculations

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

Head to head
About

Deflection Lite

This app provides interactive and precise structural beam analysis. Easily visualize beam bending by dragging loads and supports, and calculate key engineering results like reactions, shear force, and bending moment.

Highlights
  • Interactive beam bending visualization
  • Calculate reactions, shear force, and bending moment
  • Built-in cross-section databases
  • Unlimited loads and supports
  • Export design to shareable permalink
  • Metric and standard units
Features
Read full description

Deflection Lite is the most interactive, fast, and precise app available for structural beam analysis. Simply drag loads and supports on the beam, and see how it bends. RESULTS Calculate reactions, shear force, bending moment, and beam deflection quickly and easily. CROSS SECTION DATABASES Specify elastic modulus and moment of inertia values directly, or find common shapes and materials using the built-in databases, which include most international steel sections, as well as some aluminum and wood shapes. UNLIMITED LOADS AND SUPPORTS Simply drag any load or support on the beam. • Concentrated point loads • Distributed loads • Moment loads • Simple supports • Fixed supports • Fixed hinges • Floating Gerber hinges OTHER FEATURES • Export your design to a permalink that you can share. • Automatic detection of local maxima and minima in diagrams • Metric and standard measurement units CONTACT We like to hear from you! Please email contact@ketchep.com if you have any issues, questions, or comments.

About

Lighting Calculations

This app transforms your smartphone into a comprehensive lighting design tool. It offers advanced calculations for room lighting, LED analysis, and efficiency, alongside quick conversions and essential technical resources. Ensure your lighting projects meet all standards and optimize energy usage.

Highlights
  • Room lighting design calculations
  • LED analysis (lifespan, photobiological risk)
  • Energy efficiency calculations
  • Photometric code decoding
  • Lumen, Lux, Candela, Watt conversions
  • Normative requirements and technical guides
  • Light quality metrics (CRI, UGR)
Features
Read full description

PROJEKTUJESZ SYSTEMY OŚWIETLENIOWE, JESTEŚ INSTALATOREM LUB PASJONATEM MAJSTERKOWANIA? "Obliczenia Oświetleniowe" to ostateczne narzędzie, które zmieni Twój smartfon w najlepszego sojusznika w projektach świetlnych. Zapomnij o złożonych obliczeniach ręcznych i ryzyku błędów projektowych. Dzięki naszej aplikacji masz pod ręką kompletny ekosystem kalkulatorów, konwerterów i tabel, zaprojektowany tak, aby oszczędzić Twój cenny czas na budowie lub w biurze. Technika świetlna nie będzie miała przed Tobą tajemnic! CO MOŻESZ ZROBIĆ Z NASZĄ APLIKACJĄ? ZAAWANSOWANE OBLICZENIA I PROJEKTOWANIE: • Projektowanie pomieszczeń: obliczanie całkowitego strumienia świetlnego, liczby potrzebnych opraw, natężenia oświetlenia i równomierności na powierzchni. • Analiza LED: żywotność diod LED (parametry L, B i C), ryzyko fotobiologiczne i obliczenia zasilaczy do taśm LED. • Efektywność: obliczanie skuteczności świetlnej, oszczędności energii lamp i kompensacja mocy biernej. • Zintegrowane narzędzia: szybkie i precyzyjne dekodowanie kodu fotometrycznego. SZYBKIE I PRECYZYYJNE KONWERSJE: • Lumeny / Luksy / Kandele / Waty (we wszystkich możliwych kombinacjach). • Luksy / Stopokandele (dla standardów międzynarodowych). • Szybkie porównanie mocy między różnymi technologiami oświetleniowymi. • Luminancja i Natężenie oświetlenia / Wartość ekspozycji (EV). • Konwersja temperatury barwowej (Kelvin) na RGB. ZASOBY, TABELE I ZAWSZE AKTUALNE NORMY: • Wymagania normatywne: poziomy natężenia oświetlenia wymagane w pomieszczeniach. • Przewodniki techniczne: typy lamp, trzonki, kształty żarówek i świetlówki. • Jakość światła: diagram Kruithofa, widmo widzialne, temperatura barwowa i wskaźnik oddawania barw (CRI). • Bezpieczeństwo i klasyfikacja: nowa etykieta energetyczna, skala olśnienia (UGR), symbole i jednostki miary. • Focus na LED: typowe cechy i specyfikacje diod LED SMD. EKSKLUZYWNY BONUS: Wewnątrz znajdziesz niezwykle przydatny PEŁNY ZBIÓR WZORÓW ze wszystkimi formułami matematycznymi techniki świetlnej, a także ogólne tabele kompensacji mocy biernej dla lamp 220V. DLA KOGO JEST TA APLIKACJA? Inżynierów, architektów, projektantów oświetlenia, elektryków, studentów i każdego, kto chce uzyskać idealne, skalibrowane i zgodne z normami oświetlenie. RZUĆ ŚWIATŁO NA SWOJE PROJEKTY! Pobierz "Obliczenia Oświetleniowe" już dziś i wznieś swoją pracę na wyższy poziom.

Screenshots

Deflection Lite4 screens
Lighting Calculations4 screens

Verdict

The call

The clearest difference is in-app purchases: Deflection Lite at none against Lighting Calculations's 3. Deflection Lite also leads on ads (none vs shown) and ratings volume (46 vs 6). Lighting Calculations's advantage is rating (4.8 vs 4.5) and review sentiment (60% vs 44%). On price, 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. Lighting Calculations sells 3 in-app purchases, starting at $1.99 per 3 months. Deflection Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Lighting Calculations holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Deflection Lite has 46 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 44% of Deflection Lite's written reviews are positive against 60% of Lighting Calculations's.

UpkeepUpdate frequency

Deflection Lite ships an update every 3 months, Lighting Calculations every 5 weeks. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

Scorecard7 real differences · 3 level
Deflection Lite versus Lighting Calculations: the parameters behind the verdict, then further details
ParameterDeflection LiteLighting Calculations
PriceFreeFree
Rating4.5 (46 ratings)4.8 (6 ratings) — better
Positive reviews44.4% of reviews60.0% of reviews — better
Number of ratings46 — better6
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size108 MB32 MB
Age rating4+4+
DeveloperBlue KetchepEgal Net di Ettore Gallina

Customer experience

Deflection Lite

All ratings46 ratings
Positive82.6%
Neutral10.9%
Negative6.5%
Written reviews9 reviews
Positive44.4%
Neutral0.0%
Negative55.6%

Lighting Calculations

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

In-app purchases

None

Deflection Lite

No in-app purchases

3 purchases

Lighting Calculations

Subscriptions2
  • PRO Version (3 months)$1.993 Months
  • PRO Version (1 year)7 Days trial$2.991 Year
One-time1
  • PRO Version (Lifetime)$89.99

Questions

Is Deflection Lite free?
Deflection Lite is free to download, with no in-app purchases.
Is Lighting Calculations free?
Lighting Calculations is free to download, with in-app purchases available.
Which has better reviews, Deflection Lite or Lighting Calculations?
Lighting Calculations is rated higher. Deflection Lite averages 4.5 out of 5 from 46 ratings, while Lighting Calculations averages 4.8 from 6 ratings.
Do Deflection Lite or Lighting Calculations have ads?
Lighting Calculations shows ads; Deflection Lite does not.
Which is updated more often, Deflection Lite or Lighting Calculations?
Deflection Lite ships an update every 3 months, and Lighting Calculations every 5 weeks. Most recently, Deflection Lite was updated on October 4, 2026 and Lighting Calculations on October 3, 2026.

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