Comparison

WOLFF IMM vs KRL SmartBox

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

Head to head
About

WOLFF IMM

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Get your machine fleet in your pocket with Wolff IMM. At a glance you can identify where the machines are, what services are needed, if there are problems and how to solve them. The functionality scope is extended to optimize functionality and productivity. Intelligent Machine Management helps in locating the machines and answering questions such as "Where is my machine?", "When does may machine need to be serviced?", "What is the capacity of the fleet being used?" Or "How can processes be simplified? ". Wolff IMM helps to plan and optimize important influencing factors such as maintenance costs, administrative expenses, transport costs, loss costs and / or personnel hours. The early detection of irregularities actively reduces standstills on construction sites and reduces repair costs.

About

KRL SmartBox

Features
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The KRL Smartbox app can be used to retrieve measurement results from the KRL Smartbox via Bluetooth. The measurement results can be supplemented with further information and then exported as a PDF. Using the KRL SmartBox makes it possible to measure the corresponding relative humidity of mineral screeds. Changes in the temperature of the sample can influence the measurement of the humidity above it. During measurements with the KRL method at a temperature of 20ยฐC ยฑ5 ยฐC, the expected maximum humidity deviation is ยฑ2% relative humidity.

Screenshots

WOLFF IMM4 screens
KRL SmartBox1 screens

Verdict

The call

The clearest difference is iOS requirement: WOLFF IMM at 11.0 against KRL SmartBox's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WOLFF IMM ships an update every 6 months, KRL SmartBox every 7 months. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

Scorecard1 real difference ยท 5 level
WOLFF IMM versus KRL SmartBox: the parameters behind the verdict, then further details
ParameterWOLFF IMMKRL SmartBox
PriceFreeFree
Update frequencyEvery 6 months โ€” betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 โ€” better15.1
Further details โ€” not scored
Size21 MB33 MB
Age rating4+4+
DeveloperUzin Utz SEWitte Metallwaren Handelsges. mbH & Co. KG

In-app purchases

None

WOLFF IMM

No in-app purchases

None

KRL SmartBox

No in-app purchases

Questions

Is WOLFF IMM free?
WOLFF IMM is free to download, with no in-app purchases.
Is KRL SmartBox free?
KRL SmartBox is free to download, with no in-app purchases.
Do WOLFF IMM or KRL SmartBox have ads?
Neither WOLFF IMM nor KRL SmartBox shows ads.
Which is updated more often, WOLFF IMM or KRL SmartBox?
WOLFF IMM ships an update every 6 months, and KRL SmartBox every 7 months. Most recently, WOLFF IMM was updated on October 8, 2026 and KRL SmartBox on October 5, 2026.

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