Comparison

AdPreviewer vs GraviTrax Power

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

Head to head
About

AdPreviewer

This tool allows users to preview ads rendered by the FreeWheel iOS AdManager. It functions as a player for FreeWheel ad responses, enabling verification of composed or captured ad content.

Highlights
  • Ad playback integration
  • FreeWheel iOS AdManager support
  • Preview composed ad responses
  • Verify captured ad responses
  • Configurator tool integration
Features
Read full description

The AdPreviewer is a tool created to help you preview your ads rendered by FreeWheel iOS AdManager. It is essentially a player that integrates with FreeWheel iOS AdManager that plays back FreeWheel ad responses. You can use the online AdPreviewer Configurator tool(http://adpreviewer.freewheel.tv/) to compose your own ad response that contains the ad you want to preview, or use a captured ad response to verify in the AdPreviewer.

About

GraviTrax Power

Control your marble runs digitally with this app. Connect to POWER components to remotely control, program, and add sound effects to your creations. It offers a playful introduction to programming and enhances marble run gameplay.

Highlights
  • Digital control of marble runs
  • Programming functions
  • Remote control capabilities
  • Integrated stopwatch
  • Sound effects
  • Playful introduction to programming
Read full description

The Ravensburger GraviTrax POWER App opens up a new dimension for the GraviTrax marble runs. Together with the Gravitrax POWER Connect component, all POWER marble runs can now be controlled digitally. The POWER Connect connects the digital world to any GraviTrax POWER marble run. As soon as a connection has been established between the marble run and a mobile device, exciting functions such as remote control, programming, a stopwatch or sounds ensure diverse fun while playing and enable a playful entry into the world of programming. The electronic components of GraviTrax POWER establish invisible connections within the marble run via radio waves. There are transmitter and receiver components which can communicate with each other using three channels. With the new GraviTrax POWER app, players can now also control the marble run using their mobile phone or tablet and can program individual functions and processes. The functionality is based on sending signals from the app to the marble run and vice versa. This means that individual POWER components can be triggered independently of each other. These functions allow GraviTrax fans to influence the paths the marbles take, making themselves an active part of the marble run. More cool functions like a timer, sounds or signal counts give the app a playful character and provide even more GraviTrax actions. GraviTrax POWER app – the perfect connection between analogue marble runs and the digital world. Caution! Can only be used in combination with the GraviTrax POWER Connect components and other POWER components!

Screenshots

AdPreviewer2 screens
GraviTrax Power4 screens

Verdict

The call

The clearest difference is rating: AdPreviewer at 5.0 against GraviTrax Power's 3.7. AdPreviewer also leads on review sentiment (100% vs 75%). GraviTrax Power's advantage is ratings volume (6 vs 2). On price, update cadence, ads and in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

AdPreviewer holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 100% of AdPreviewer's written reviews are positive against 75% of GraviTrax Power's.

UpkeepUpdate frequency

AdPreviewer ships an update every 14 months, GraviTrax Power every 10 months. The most recent releases landed on October 17, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
AdPreviewer versus GraviTrax Power: the parameters behind the verdict, then further details
ParameterAdPreviewerGraviTrax Power
PriceFreeFree
Rating5.0 (2 ratings) — better3.7 (6 ratings)
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings26 — better
Update frequencyEvery 14 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size11 MB92 MB
Age rating4+4+
DeveloperFreeWheel Media Inc.Ravensburger Verlag GmbH

Customer experience

AdPreviewer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

GraviTrax Power

All ratings6 ratings
Positive50.0%
Neutral33.3%
Negative16.7%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

AdPreviewer

No in-app purchases

None

GraviTrax Power

No in-app purchases

Questions

Is AdPreviewer free?
AdPreviewer is free to download, with no in-app purchases.
Is GraviTrax Power free?
GraviTrax Power is free to download, with no in-app purchases.
Which has better reviews, AdPreviewer or GraviTrax Power?
AdPreviewer is rated higher. AdPreviewer averages 5.0 out of 5 from 2 ratings, while GraviTrax Power averages 3.7 from 6 ratings.
Do AdPreviewer or GraviTrax Power have ads?
Neither AdPreviewer nor GraviTrax Power shows ads.
Which is updated more often, AdPreviewer or GraviTrax Power?
AdPreviewer ships an update every 14 months, and GraviTrax Power every 10 months. Most recently, AdPreviewer was updated on October 17, 2026 and GraviTrax Power on October 22, 2026.

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