Comparison

ArrayCalc Viewer vs Quyu

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

Head to head
About

ArrayCalc Viewer

Access all project data for rigging d&b audiotechnik loudspeaker systems on your iOS device. Share system designs, calculations, and optimizations seamlessly. This app offers a paperless and efficient way to keep all relevant rigging, setup, and system information readily available.

Highlights
  • Access rigging and system information
  • Share project data via email, AirDrop, Dropbox, iTunes
  • View system designs and calculations
  • Paperless and efficient operation
  • User-friendly interface
Read full description

The d&b ArrayCalc Viewer app provides all project data for rigging a d&b audiotechnik loudspeaker system. Once the system has been designed, calculated and optimized in the ArrayCalc simulation software, all relevant project information can be shared via email, AirDrop, Dropbox or iTunes onto any iOS device. The d&b ArrayCalc simulation software is the simulation tool for d&b line arrays, column and point source loudspeakers as well as subwoofers. This is a comprehensive toolbox for all tasks associated with acoustic design, performance prediction, alignment, rigging and safety parameters. It is available as a native standalone application for both Microsoft Windows and Mac OS X operating systems. ArrayCalc Viewer main benefits: - All relevant rigging, setup and system information close to hand in a concise format - Any changes to the system design can be immediately distributed - Paperless and efficient - User friendly

About

Quyu

This app provides real-time updates on crowds, wait times, and parking for local businesses. Users can contribute updates to improve accuracy and earn rewards. It helps plan your day and discover new places.

Highlights
  • Real-time Qscore updates
  • Crowd and wait time indicators
  • User-submitted place status updates
  • Heatmaps for daily planning
  • Save favorite places
  • Earn points and climb leaderboards
  • Access special offers and rewards
Features
Read full description

Built for the intersection of your life and your time, Quyu helps add time to yoour day by providing real-time updates on your favorite places. Check Qscore updates on crowds, wait times, parking and more. Use Quyu’s easy slider features to update the status of nearby places as conditions change throughout the day and night. At its core, Quyu is a marketplace platform that’s community driven primarily by local businesses and consumers. Our “Qscores” allows people the convenience of choosing their best times to shop, eat, or go anywhere or do anything. Quyu is designed to help people find great local businesses as well as helping businesses retain and attract great customers. Also, Quyu gets more accurate as more people use it. Try Quyu today and do busy better! What are you waiting for?! FEATURES: - Scroll through Nearby places to quickly assess places around you. - At a glance, Qscores provide updates on crowds, lines, wait times and more. - Green means go... and red signals trouble. - Move the sliders to provide real-time updates on crowds, lines, wait times, safety and more. - Check the Today tab to see Quyu heatmaps to help plan your day. - Sort places by Categories to customize your searches. - Save your favorite places and see your Recent searches. - Tap on the address of a place to launch your favorite mapping app for directions. - Tap on “Contact” to place a call to the place you want to visit. - Add Comments, Photos and Share places you visit. - Earn points for providing updates on places you visit and climb the Leaderboard as you advance to new levels. - Accept and save Special Offers and Rewards from participating businesses.

Screenshots

ArrayCalc Viewer4 screens
Quyu4 screens

Verdict

The call

The clearest difference is rating: Quyu at 5.0 against ArrayCalc Viewer's 4.1. ArrayCalc Viewer's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Quyu holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

UpkeepUpdate frequency

ArrayCalc Viewer ships an update every 4 months, Quyu every 2 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
ArrayCalc Viewer versus Quyu: the parameters behind the verdict, then further details
ParameterArrayCalc ViewerQuyu
PriceFreeFree
Rating4.1 (8 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings8 — better2
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS1615.0 — better
Further details — not scored
Size40 MB29 MB
Age rating4+4+
Developerd&b audiotechnik GmbH & Co. KGQuyu LLC

Customer experience

ArrayCalc Viewer

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Quyu

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ArrayCalc Viewer

No in-app purchases

None

Quyu

No in-app purchases

Questions

Is ArrayCalc Viewer free?
ArrayCalc Viewer is free to download, with no in-app purchases.
Is Quyu free?
Quyu is free to download, with no in-app purchases.
Which has better reviews, ArrayCalc Viewer or Quyu?
Quyu is rated higher. ArrayCalc Viewer averages 4.1 out of 5 from 8 ratings, while Quyu averages 5.0 from 2 ratings.
Do ArrayCalc Viewer or Quyu have ads?
Quyu shows ads; ArrayCalc Viewer does not.
Which is updated more often, ArrayCalc Viewer or Quyu?
ArrayCalc Viewer ships an update every 4 months, and Quyu every 2 months. Most recently, ArrayCalc Viewer was updated on October 7, 2026 and Quyu on October 15, 2026.

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