Comparison

APTROCK vs TrackBridge

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

Head to head
About

APTROCK

Read full description

This app is used with the NFC smart lock provided by 4quad (www.4quad.com), which has no battery, no charging, high security, easy to use. With this APP you can manage multiple locks, quickly Lock & UnLock the lock, manage lock passwords, read & write the NDEF information etc.

About

TrackBridge

Transform your iPhone into a precise head tracker for PC games like flight and racing simulators. It uses your phone's camera to control the in-game camera, eliminating the need for extra hardware.

Highlights
  • 6 degrees of freedom head tracking
  • Low-latency UDP streaming
  • Works with any OpenTrack-supported game
  • No extra hardware required
  • No account or personal data needed
  • Simple setup and interface
Read full description

Turn your iPhone into a precise head tracker for flight, racing, and truck sims - no extra hardware, no TrackIR, no account. Move your head, and the in-game camera follows. TrackBridge uses your iPhone's TrueDepth camera to capture your head's rotation and position, then streams it over your local network to OpenTrack on your PC. From there it drives head look in the sims you already play. HOW IT WORKS Your iPhone reads your head pose (yaw, pitch, roll and position) and sends it via UDP to OpenTrack. OpenTrack passes it on to your game - the same setup people use with dedicated tracking hardware, just with the phone you already own. QUICK SETUP 1. Install OpenTrack on your PC (free, open source). 2. In OpenTrack, set Input to "UDP over network". 3. Open TrackBridge and enter your PC's IP address (default port 4242). 4. Place your phone facing you - on a stand, a mount, or against your monitor. 5. Start tracking and look around in your sim. An in-app guide walks you through it the first time. FEATURES - 6 degrees of freedom: head rotation and position - Low-latency UDP streaming over your local Wi-Fi or hotspot - Works with any game OpenTrack supports - No dedicated hardware, no infrared clip, no reflectors - No account, no sign-up, no personal data required - Simple, focused interface - set it up once and play FREE, SUPPORTED BY ADS TrackBridge is free. To keep it that way, it's supported by rewarded video ads: watch one short video and unlock 4 hours of uninterrupted tracking. No subscriptions, no hidden costs, nothing to buy. SYSTEM REQUIREMENTS - iPhone with a TrueDepth camera (iPhone X or newer) - A PC running OpenTrack (Windows, Linux, or Mac) - iPhone and PC on the same local network Whether you're flying in your favorite flight sim, racing wheel-to-wheel, or hauling freight across the map in a truck sim, TrackBridge gives you natural, hardware-free head tracking straight from your iPhone.

Screenshots

APTROCK4 screens
TrackBridge4 screens

Verdict

The call

The clearest difference is ads: APTROCK at none against TrackBridge's shown. APTROCK also leads on iOS requirement (13.0 vs 17.0). TrackBridge's advantage is update cadence (weekly vs every 3 months). On price, 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.

UpkeepUpdate frequency

APTROCK ships an update every 3 months, TrackBridge weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 6 level
APTROCK versus TrackBridge: the parameters behind the verdict, then further details
ParameterAPTROCKTrackBridge
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size48 MB5 MB
Age rating4+12+
DeveloperSixiangxian Enterprise Development (Shanghai) Co., Ltd.Robin Rowinski

In-app purchases

None

APTROCK

No in-app purchases

None

TrackBridge

No in-app purchases

Questions

Is APTROCK free?
APTROCK is free to download, with no in-app purchases.
Is TrackBridge free?
TrackBridge is free to download, with no in-app purchases.
Do APTROCK or TrackBridge have ads?
TrackBridge shows ads; APTROCK does not.
Which is updated more often, APTROCK or TrackBridge?
APTROCK ships an update every 3 months, and TrackBridge weekly. Most recently, APTROCK was updated on October 27, 2026 and TrackBridge on October 25, 2026.

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