Comparison

AprilTag vs Sidus Audio

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

Head to head
About

AprilTag

This utility app detects 2D barcodes for robotics and augmented reality. It can function independently or send detected tag information to another device via UDP, transforming your iPhone into a robot tracking system.

Highlights
  • Fast and accurate 2D barcode detection
  • Stand-alone detection mode
  • UDP broadcasting of detected tags
  • Robot tracking system functionality
  • Augmented reality applications
Features
Read full description

AprilTags are 2D barcodes designed to be quickly and accurately detected, and are used in a variety of robotics and augmented reality applications. This application is an AprilTag detector that can be used in stand-alone mode, or can broadcast any tags that it detects to another machine via UDP. With this application, your iPhone is turned into a self-contained and turn-key robot tracking system.

About

Sidus Audio

This app allows professional audio engineers and sound enthusiasts to wirelessly connect and control multiple audio devices. It features an intelligent network for stable communication, centralized monitoring, and parameter presets, all accessible through a user-friendly interface.

Highlights
  • Intelligent audio network
  • Wireless device control
  • Centralized monitoring
  • Parameter presets
  • Cloud synchronization
  • Demo mode
Features
Read full description

Sidus Audio™ is an audio control App released by Sidus Link® for professional audio engineers, mixing engineers, foley engineers as well as video workers, anchor and sound lover,etc.Users can connect and control devices wirelessly,to realize higher working efficiency. I. Intelligent audio network The decentralized audio communication network supports direct connection of audio device through mobile terminal Bluetooth without another network (gateway or router); The auto reconnection mechanism can maximize the communication smoothness and avoid repeated adding of audio devices; Support up to 20 devices, exclusive Bit ConnectifyTM technology provides more stable and faster communication transmission. II. Functions 1. Control Mode Simplified core controls to ensure ease of use for users. Accurate workstation classification to improve focus and efficiency. 2. Quick Management Monitoring mode The “Devices” and “Workstation” mode supports centralized and classified monitoring, to realize overall and targeted management; Parameter preset The device parameters can be saved to preset library and uploaded to cloud server, to support one-key saving and call; III. Workflow First,establish a Bluetooth communication network and start intelligent control right now! Second, copy the configured devices to device groups for application in different scenarios. Finally, the dual modes of "Devices" and "Workstation" will help help you monitor efficiently! IV. Cloud Service Free Cloud storage, support synchronization of presets and account data to avoid occupation of local memory. Reliable cloud service manager, avoid data loss when switching among different terminals. V. Demo Mode Full-process functional experience, no equipment required, no threshold to get started.

Screenshots

AprilTag2 screens
Sidus Audio4 screens

Verdict

The call

The clearest difference is review sentiment: Sidus Audio at 71% against AprilTag's 25%. Sidus Audio also leads on rating (4.4 vs 3.6) and update cadence (every 6 weeks vs every 33 months). AprilTag's advantage is iOS requirement (12.0 vs 15.0). On price, ratings volume, 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

Sidus Audio holds the better App Store score, 4.4 against 3.6. Both are backed by a comparable volume of ratings — 9 and 17 respectively. Written reviews point the same way: 25% of AprilTag's written reviews are positive against 71% of Sidus Audio's.

UpkeepUpdate frequency

AprilTag ships an update every 33 months, Sidus Audio every 6 weeks. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

Scorecard4 real differences · 6 level
AprilTag versus Sidus Audio: the parameters behind the verdict, then further details
ParameterAprilTagSidus Audio
PriceFreeFree
Rating3.6 (9 ratings)4.4 (17 ratings) — better
Positive reviews25.0% of reviews71.4% of reviews — better
Number of ratings917 — better
Update frequencyEvery 33 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size5 MB50 MB
Age rating4+4+
DeveloperEdwin OlsonSidus Link Ltd.

Customer experience

AprilTag

All ratings9 ratings
Positive55.6%
Neutral11.1%
Negative33.3%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

Sidus Audio

All ratings17 ratings
Positive82.4%
Neutral5.9%
Negative11.8%
Written reviews14 reviews
Positive71.4%
Neutral7.1%
Negative21.4%

In-app purchases

None

AprilTag

No in-app purchases

None

Sidus Audio

No in-app purchases

Questions

Is AprilTag free?
AprilTag is free to download, with no in-app purchases.
Is Sidus Audio free?
Sidus Audio is free to download, with no in-app purchases.
Which has better reviews, AprilTag or Sidus Audio?
Sidus Audio is rated higher. AprilTag averages 3.6 out of 5 from 9 ratings, while Sidus Audio averages 4.4 from 17 ratings.
Do AprilTag or Sidus Audio have ads?
Neither AprilTag nor Sidus Audio shows ads.
Which is updated more often, AprilTag or Sidus Audio?
AprilTag ships an update every 33 months, and Sidus Audio every 6 weeks. Most recently, AprilTag was updated on October 23, 2026 and Sidus Audio on October 22, 2026.

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