Comparison

Stack Testers Flow Friend vs Kärcher Machine connect

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

Head to head
About

Stack Testers Flow Friend

This mobile toolkit assists environmental engineers with on-site calculations for stack testing. Quickly determine velocity and volume flow by inputting stack size and gas conditions, eliminating the need for manual calculations or laptops. It also aids in calculating differential pressure cell mA output for data logging.

Highlights
  • Velocity and volume flow calculations
  • Input stack size and gas conditions
  • Differential pressure cell mA output calculation
  • Preloaded Engineers Note Book content
  • On-site calculation tool
Features
Read full description

Stack Testers Flow Friend is part of a suite of apps developed by the Engineers of CES Environmental Instruments, one of the UKs leading environmental Test Houses and incorporates some of their on-site calculations in an easy to use app. When working on the stack and you need to quickly calculate a velocity or volume flow, the answer can be at your fingertips. By inputting the essential parameters of the stack size and gas conditions, the velocity and volume flow can be determined without the need to manually calculate the value or start up a laptop. The app is an essential tool for the professional Environmental engineer. The app is a useful aid to the C & I engineer calculating the Differential Pressure cell mA output used for data logging. The contents of the CES Environmental Instruments popular Engineers Note Book is preloaded within the app.

About

Kärcher Machine connect

Enhance your floor cleaning experience with smart control over your scrubber drier. Adjust settings, manage permissions, and access helpful advice for optimal performance.

Highlights
  • Machine display language settings
  • Cleaning head type selection
  • Adjustable transport speed
  • USB port control
  • Brush and suction delay timing
  • Speed-dependent water dosage
  • Intelligent Key permission management
Features
Read full description

Innovate your way of floor cleaning Get full control of your scrubber drier! Machine Connect smartifies your machine and grants you manifold additional functions, adjustments and information. These are for example: - set the machine display language - set the type of cleaning head - set the maximum transport speed - turn off/on the USB port - set the delay time of the brush(es) - set the delay time of the suction - turn on/off the speed-dependent water dosage - manage the permissions of the yellow Intelligent Key - restore factory settings - get instruction, care and troubleshooting advice

Screenshots

Stack Testers Flow Friend4 screens
Kärcher Machine connect4 screens

Verdict

The call

The clearest difference is review sentiment: Kärcher Machine connect at 100% against Stack Testers Flow Friend's 0%. Kärcher Machine connect also leads on update cadence (every 5 weeks vs every 8 months). Stack Testers Flow Friend's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and monetization model 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

Stack Testers Flow Friend ships an update every 8 months, Kärcher Machine connect every 5 weeks. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 7 level
Stack Testers Flow Friend versus Kärcher Machine connect: the parameters behind the verdict, then further details
ParameterStack Testers Flow FriendKärcher Machine connect
PriceFreeFree
Rating—5.0 (8 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—8 — better
Update frequencyEvery 8 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size32 MB102 MB
Age rating4+4+
DeveloperLewis HolmesAlfred Kaercher SE & Co. KG

Customer experience

Stack Testers Flow Friend

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Kärcher Machine connect

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stack Testers Flow Friend

No in-app purchases

None

Kärcher Machine connect

No in-app purchases

Questions

Is Stack Testers Flow Friend free?
Stack Testers Flow Friend is free to download, with no in-app purchases.
Is Kärcher Machine connect free?
Kärcher Machine connect is free to download, with no in-app purchases.
Do Stack Testers Flow Friend or Kärcher Machine connect have ads?
Neither Stack Testers Flow Friend nor Kärcher Machine connect shows ads.
Which is updated more often, Stack Testers Flow Friend or Kärcher Machine connect?
Stack Testers Flow Friend ships an update every 8 months, and Kärcher Machine connect every 5 weeks. Most recently, Stack Testers Flow Friend was updated on October 5, 2026 and Kärcher Machine connect on October 1, 2026.

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