Optical Surface Recognition vs VALK Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
VALK Tools
Read full descriptionHide 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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.
| Parameter | Optical Surface Recognition | VALK Tools |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 17 MB | 85 MB |
| Age rating | 4+ | 12+ |
| Developer | Engineering Director, Inc. | ITRoots |
In-app purchases
Optical Surface Recognition
No in-app purchases
VALK Tools
No in-app purchases
Questions
Is Optical Surface Recognition free?
Is VALK Tools free?
Do Optical Surface Recognition or VALK Tools have ads?
Which is updated more often, Optical Surface Recognition or VALK Tools?
Other comparisons















