Comparison

IML Tree Motion vs ArboRefD

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

Head to head
About

IML Tree Motion

Features
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This App is used to control the PiCUS Tree Motion Sensor 3 (PTMS 3) from IML Electronic. The main function of this application is to start and stop the measurements of the PTMS 3 with the correct configuration. Bluetooth 4/5 is used for communication as the PTMS 3 are completely sealed to protect them from dust and water. It is also beneficial to have location tracking enabled on the mobile device to tell the PTMS 3 the actual geographical position and direction at the start of the measurement.

About

ArboRefD

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ArboRefD helps evaluating the breakage safety of trees with localized defects whose trunk still has an intact cross-section higher up. This is one of the practical applications of Allometric Self-Referencing (ASR) for evaluating the breakage and uprooting safety of defective mature trees. To document the results for a specific tree, we recommend saving a screenshot after entering all data in the current version. Additional features are currently being developed for the app. If you buy the app with a one-time purchase and enclose the corresponding app invoice with your next order of a measuring device (ABT, DNT, RES) from RINNTECH, you will receive a discount.

Screenshots

IML Tree Motion4 screens
ArboRefD3 screens

Verdict

The call

The clearest difference is in-app purchases: IML Tree Motion at none against ArboRefD's 8. IML Tree Motion also leads on iOS requirement (12.2 vs 15.6). ArboRefD's advantage is update cadence (every 4 weeks vs every 4 months). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. ArboRefD sells 8 one-off in-app purchases. IML Tree Motion asks for nothing beyond the download.

UpkeepUpdate frequency

IML Tree Motion ships an update every 4 months, ArboRefD every 4 weeks. The most recent releases landed on July 23, 2026 and September 22, 2026 respectively.

Scorecard3 real differences Β· 3 level
IML Tree Motion versus ArboRefD: the parameters behind the verdict, then further details
ParameterIML Tree MotionArboRefD
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac β€” better
Requires iOS12.2 β€” better15.6
Further details β€” not scored
Size92 MB58 MB
Age rating4+4+
DeveloperIML Instrumenta Mechanik Labor Electronic GmbHFrank Rinn

In-app purchases

None

IML Tree Motion

No in-app purchases

8 purchases

ArboRefD

One-time8
  • 1 Day$0.99
  • 1-Day-Pass$0.99
  • 1-Week-Pass$4.99
Show 5 more
  • Full version (Week)$5.99
  • Full version (Month)$11.99
  • 1-Month-Pass$12.99
  • Full version (Year)$49.99
  • 1-Year-Pass$59.99

Questions

Is IML Tree Motion free?
IML Tree Motion is free to download, with no in-app purchases.
Is ArboRefD free?
ArboRefD is free to download, with in-app purchases available.
Do IML Tree Motion or ArboRefD have ads?
Neither IML Tree Motion nor ArboRefD shows ads.
Which is updated more often, IML Tree Motion or ArboRefD?
IML Tree Motion ships an update every 4 months, and ArboRefD every 4 weeks. Most recently, IML Tree Motion was updated on July 23, 2026 and ArboRefD on September 22, 2026.

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