Comparison

Reflex Pro App vs Deflection Lite

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

Head to head
About

Reflex Pro App

Features
Read full description

Let your smart phone help you! You can now get answers to pressure maintenance queries in heating, solar power and hot water systems at the touch of a button – even in the darkest boiler room! The Reflex Pro App allows you to calculate in situ expansion vessels, define upstream and filling pressures, and take appropriate steps with respect to the hardness of water used to fill and top up systems in accordance with VDI 2035. Ideal for project surveys, initial consultations, and producing highly accurate calculations on site.

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.

Screenshots

Reflex Pro App4 screens
Deflection Lite4 screens

Verdict

The call

Reflex Pro App and Deflection Lite are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Reflex Pro App ships an update every 4 months, Deflection Lite every 3 months. The most recent releases landed on June 4, 2026 and September 17, 2026 respectively.

ScorecardNo meaningful differences
Reflex Pro App versus Deflection Lite: the parameters behind the verdict, then further details
ParameterReflex Pro AppDeflection Lite
PriceFreeFree
Rating—4.5 (46 ratings) — better
Positive reviews—44.4% of reviews
Number of ratings—46 — better
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size19 MB108 MB
Age rating4+4+
DeveloperConSoftBlue Ketchep

In-app purchases

None

Reflex Pro App

No in-app purchases

None

Deflection Lite

No in-app purchases

Questions

Is Reflex Pro App free?
Reflex Pro App is free to download, with no in-app purchases.
Is Deflection Lite free?
Deflection Lite is free to download, with no in-app purchases.
Do Reflex Pro App or Deflection Lite have ads?
Neither Reflex Pro App nor Deflection Lite shows ads.
Which is updated more often, Reflex Pro App or Deflection Lite?
Reflex Pro App ships an update every 4 months, and Deflection Lite every 3 months. Most recently, Reflex Pro App was updated on June 4, 2026 and Deflection Lite on September 17, 2026.

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