Comparison

Optical Surface Recognition vs VALK Tools

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

Head to head
About

Optical Surface Recognition

This utility app uses computer vision to scan surfaces for signs of corrosion on various metal types. It allows users to capture photos and record videos of detected corrosion, saving them with a proprietary score.

Highlights
  • Detects corrosion on various metal surfaces
  • Scans flat metal, nails, bolts, signs, poles, grates
  • Captures photos with corrosion score
  • Records videos with corrosion score
  • Saves media to device photo roll
Features
Read full description

Optical Surface Recognition (OSR) is a unique technology which can scan surfaces for signs of surface degradation (corrosion). It can also detect corrosion on almost any type of metal, including exposed flat metal, nails, bolts, signs, poles, and grates. PHOTOS Capture photos of corrosion and save to your device's photo roll along with the OSR corrosion score in a custom generated image. VIDEOS Record entire videos with the proprietary OSR corrosion score and save them to your photo roll.

About

VALK Tools

Features
Read full description

VALK Tools is a modern, user-friendly platform designed to make discovering and shopping for tools easier than ever. Whether you're a professional craftsman, technician, or DIY enthusiast, the app gives you access to a wide variety of high-quality tools and equipment all in one place. Explore organized categories such as power tools, bench tools, and welding machines, making it simple to find exactly what you need. Stay up to date with the latest arrivals through the Recently Added Products section, or browse Top Products to see the most popular and trusted tools chosen by other users. With a fast search experience, clean interface, and smart navigation, VALK Tools helps you quickly compare products, check details, and make confident purchasing decisions. The app is built to save your time and effort—so you can focus on getting the job done with the right tools. Whether you're working on a professional project or a home improvement task, VALK Tools is your reliable companion for finding the right tool, every time.

Screenshots

Optical Surface Recognition3 screens
VALK Tools3 screens

Verdict

The call

Optical Surface Recognition and VALK Tools are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

ScorecardNo meaningful differences
Optical Surface Recognition versus VALK Tools: the parameters behind the verdict, then further details
ParameterOptical Surface RecognitionVALK Tools
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size17 MB85 MB
Age rating4+12+
DeveloperEngineering Director, Inc.ITRoots

In-app purchases

None

Optical Surface Recognition

No in-app purchases

None

VALK Tools

No in-app purchases

Questions

Is Optical Surface Recognition free?
Optical Surface Recognition is free to download, with no in-app purchases.
Is VALK Tools free?
VALK Tools is free to download, with no in-app purchases.
Do Optical Surface Recognition or VALK Tools have ads?
Neither Optical Surface Recognition nor VALK Tools shows ads.
Which is updated more often, Optical Surface Recognition or VALK Tools?
Optical Surface Recognition ships an update every 2 weeks, and VALK Tools every 2 weeks. Most recently, Optical Surface Recognition was updated on September 20, 2026 and VALK Tools on September 17, 2026.

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