Comparison

Avalanche Lab vs Rentmaxx Z

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

Head to head
About

Avalanche Lab

Record snow and avalanche data in the field using your iPhone. Measure slope angles, record crown profiles, and map slides with GPS. Share your findings instantly with colleagues and the wider community.

Highlights
  • Snow pit diagram creation
  • GPS slide mapping
  • Slope angle measurement
  • Crown profile recording
  • Offline field use
  • Data export (PDF, KML, CAAML)
  • Import CAAML profiles
Features
Read full description

Imagine... You see an avalanche, you ski over to the crown and pull out your iPhone. You snap a photo, measure the slope angle and aspect, then record a crown profile, all on your phone. As you ski down the path, you use your phone as GPS to map the slide. When you get to the toe of the slide you send a diagram of the crown and a map of the slide to your colleagues back at the office, then you post it to the Avalanche Lab network to alert everyone else. With Avalanche Lab you can do all that and more. Avalanche Lab was developed out of a desire to easily enter snow and avalanche data in the field, and then electronically share that data. Avalanche Lab uses all those fancy features on your iPhone to make it as easy as possible. It has all the features an avalanche professional would want, and is simple enough to be used by backcountry skiers and even snowboarders. Avalanche Lab includes clinometer, GPS, and compass support so you can accurately measure and mark your field sites. Avalanche Lab is designed to be used in the field, there is no need for a wifi or cell signal. Most inputs are multiple choice to eliminate the need for typing, and the buttons are big for use with cold fingers. Avalanche Lab produces professional quality snow pit diagrams in the standard format, and in a compact format for display on mobile devices, and saves diagrams as an image or PDF file. Other export formats include KML maps of avalanches, CAAML xml, and SnowPilot format. Avalanche Lab can also import CAAML v5 snow profiles so you can load data from other software for viewing in the field. https://avalanchelab.org/wp-content/uploads/2021/02/Terms-of-Use.pdf

About

Rentmaxx Z

Calculate the initial setting value for ski bindings using the weight method. Supports various units for body height and weight, and allows printing a customer document with all details.

Highlights
  • Z-Value calculation (DIN Setting)
  • Weight method (ISO 11088)
  • Input height in cm or feet
  • Input weight in kg, lbs, or stones
  • Printable customer document
Features
Read full description

Calculation of the initial setting value (Z-Value, DIN setting) for a ski binding using the weight method (ISO 11088). Body height can be input in centimeters or feet. Body weight can be input in kilograms, pounds, or stones. A customer document with all details can be printed out following a calculation. Note: The calculated Z-Value (DIN Setting) is only an initial setting value for the binding adjustment. The correct setting of ski bindings can only guaranteed with proper testing using a binding inspection device.

Screenshots

Avalanche Lab4 screens
Rentmaxx Z3 screens

Verdict

The call

The clearest difference is rating: Avalanche Lab at 4.3 against Rentmaxx Z's 3.6. Avalanche Lab also leads on review sentiment (91% vs 67%) and update cadence (every 2 months vs every 10 months). Rentmaxx Z's advantage is in-app purchases (none vs 2). On price, ratings volume, ads 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. Avalanche Lab sells 2 in-app purchases, starting at $9.99 per year. Rentmaxx Z asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Avalanche Lab holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 15 and 7 respectively. Written reviews point the same way: 91% of Avalanche Lab's written reviews are positive against 67% of Rentmaxx Z's.

UpkeepUpdate frequency

Avalanche Lab ships an update every 2 months, Rentmaxx Z every 10 months. Both last shipped on October 23, 2026.

Scorecard6 real differences · 4 level
Avalanche Lab versus Rentmaxx Z: the parameters behind the verdict, then further details
ParameterAvalanche LabRentmaxx Z
PriceFreeFree
Rating4.3 (15 ratings) — better3.6 (7 ratings)
Positive reviews90.9% of reviews — better66.7% of reviews
Number of ratings15 — better7
Update frequencyEvery 2 months — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size23 MB58 MB
Age rating4+4+
DeveloperRENAISSANCE RECREATION LLCRentmaxx GmbH & Co. KG

Customer experience

Avalanche Lab

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews22 reviews
Positive90.9%
Neutral0.0%
Negative9.1%

Rentmaxx Z

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

2 purchases

Avalanche Lab

Subscriptions2
  • Observation PRO Subscription$9.991 Year
  • Avalanche Lab PRO$9.991 Year
None

Rentmaxx Z

No in-app purchases

Questions

Is Avalanche Lab free?
Avalanche Lab is free to download, with in-app purchases available.
Is Rentmaxx Z free?
Rentmaxx Z is free to download, with no in-app purchases.
Which has better reviews, Avalanche Lab or Rentmaxx Z?
Avalanche Lab is rated higher. Avalanche Lab averages 4.3 out of 5 from 15 ratings, while Rentmaxx Z averages 3.6 from 7 ratings.
Do Avalanche Lab or Rentmaxx Z have ads?
Neither Avalanche Lab nor Rentmaxx Z shows ads.
Which is updated more often, Avalanche Lab or Rentmaxx Z?
Avalanche Lab ships an update every 2 months, and Rentmaxx Z every 10 months. Most recently, Avalanche Lab was updated on October 23, 2026 and Rentmaxx Z on October 23, 2026.

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