APR PCU vs QC Lens
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
APR PCU
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The APR Power Control Unit (PCU) is an inline tuning box designed to increase the horsepower and torque of the vehicle! The plug-and-play control unit piggybacks off the primary Engine Control Unit (ECU) to deliver more boost, fuel, and timing to increase output. Using your smart phone or the optional wireless controller, you can change performance levels on the fly, revert to stock, adjust throttle sensitivity levels, read emissions readiness, read and clear fault codes, and more.
QC Lens
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QC Lens is a private, on-device workspace for inspecting watch quality-control photos. Import a complete photo set, correct camera perspective, inspect dial alignment with a precise 12-marker grid, record concerns, work through a practical checklist, and read timegrapher photos with on-device text recognition. Every OCR result remains a draft until you confirm or edit it. QC Lens preserves imported originals. Perspective, zoom, grid, and annotation data are stored separately, and photos are never uploaded by the app. Export an annotated dial image or an editable summary when you want another opinion. QC Lens assists visual inspection. It does not authenticate watches and never makes a GL/RL decision for you.
Screenshots
Verdict
The clearest difference is device support: APR PCU at 3 against QC Lens's 1. APR PCU also leads on iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | APR PCU | QC Lens |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | โ |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 141 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Holley Performance Products | Takamasa Hirayama |
In-app purchases
APR PCU
No in-app purchases
QC Lens
No in-app purchases









