Comparison

Reflex Pro App vs Luftkanalrechner

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

This app provides instant calculations for pressure maintenance in heating, solar, and hot water systems. It helps define pressures and account for water hardness, aiding in project surveys and on-site consultations for accurate system assessments.

Highlights
  • Pressure maintenance calculations
  • Expansion vessel calculation
  • Upstream and filling pressure definition
  • Water hardness consideration
  • VDI 2035 compliance
  • On-site project surveys
Features
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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

Luftkanalrechner

Features
Read full description

Der Luftkanalrechner ermöglicht die schnelle und einfache Auslegung eines Luftkanals oder eines Rohres zur Luftverteilung. Dabei kann der Luftkanalrechner sowohl die Kanalmaße berechnen als auch die zu erwartende Geschwindigkeit nach Abhängigkeit vom Volumenstrom und gewählten Querschnitt.

Screenshots

Reflex Pro App4 screens
Luftkanalrechner4 screens

Verdict

The call

The clearest difference is update cadence: Reflex Pro App at every 4 months against Luftkanalrechner's every 55 months. Reflex Pro App also leads on iOS requirement (15.0 vs 17.0). 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

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, Luftkanalrechner every 55 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 6 level
Reflex Pro App versus Luftkanalrechner: the parameters behind the verdict, then further details
ParameterReflex Pro AppLuftkanalrechner
PriceFreeFree
Positive reviews44.4% of reviews—
Update frequencyEvery 4 months — betterEvery 55 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size19 MB8 MB
Age rating4+4+
DeveloperConSoftMartin Wulf

In-app purchases

None

Reflex Pro App

No in-app purchases

None

Luftkanalrechner

No in-app purchases

Questions

Is Reflex Pro App free?
Reflex Pro App is free to download, with no in-app purchases.
Is Luftkanalrechner free?
Luftkanalrechner is free to download, with no in-app purchases.
Do Reflex Pro App or Luftkanalrechner have ads?
Neither Reflex Pro App nor Luftkanalrechner shows ads.
Which is updated more often, Reflex Pro App or Luftkanalrechner?
Reflex Pro App ships an update every 4 months, and Luftkanalrechner every 55 months. Most recently, Reflex Pro App was updated on October 23, 2026 and Luftkanalrechner on October 25, 2026.

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