Bolt Thread Identifier vs Screw Identifier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bolt Thread Identifier
Identify bolt thread pitches by taking a photo. This app uses AI to match SAE-UNC, SAE-UNF, or metric pitches after a simple distance calibration. It's a handy tool for anyone working with fasteners.
- Photo-based thread pitch measurement
- AI-driven pitch matching
- Supports SAE-UNC, SAE-UNF, and metric threads
- Simple distance calibration
- Useful for fabricators and mechanics
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Measure the thread pitch of common bolts by snapping a photo and performing a simple distance calibration. Custom AI algorithms will then return the matching SAE-UNC, SAE-UNF, or metric pitches. Fabricators, mechanics, home owners, and hobbyists in general will find the Bolt Thread Identifier App a useful addition to their tool box.
Screw Identifier
Instantly identify screws, bolts, nuts, and washers using AI with a photo. Get precise specifications, measurements, and material details. Perfect for DIYers, contractors, and mechanics.
- AI-powered photo identification
- Precise measurements and specs
- Comprehensive fastener database
- Smart size reference with calibration
- AI assistant for fastener questions
- History and report generation
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Instantly identify screws, bolts, nuts, and washers with just a photo. Screw Identifier uses advanced AI to analyze any fastener and deliver precise specifications in seconds. Whether you are a DIY enthusiast, professional contractor, mechanic, or hardware store employee, this app eliminates the guesswork from fastener identification. INSTANT AI IDENTIFICATION - Snap a photo of any screw, bolt, nut, or washer - Get instant AI-powered identification with high accuracy - Identify multiple fasteners in a single image - Works with both metric and imperial fasteners PRECISE MEASUREMENTS & SPECS - Exact length, diameter, and thread pitch - Head type classification (Phillips, hex, flat, Torx, socket, pan) - Thread standard detection (UNC, UNF, metric coarse, metric fine) - Material and finish identification (stainless steel, zinc, brass) - Drive type recognition COMPREHENSIVE FASTENER DATABASE - Screws: wood screws, machine screws, self-tapping, drywall, deck screws - Bolts: hex bolts, carriage bolts, lag bolts, eye bolts, U-bolts - Nuts: hex nuts, lock nuts, wing nuts, cap nuts, flange nuts - Washers: flat washers, lock washers, fender washers, spring washers - Plus: rivets, anchors, pins, and specialty fasteners SMART SIZE REFERENCE - Use a coin or ruler as reference for accurate measurements - Automatic scale calibration - Size comparison charts included AI ASSISTANT - Ask any question about fasteners and get expert answers - Tool compatibility recommendations - Torque specifications and installation tips - Material selection guidance HISTORY & REPORTS - Save all your scans in organized history - Generate detailed PDF reports - Share specifications with colleagues - Build your fastener collection library PERFECT FOR - DIY home improvement projects - Professional contractors and builders - Auto mechanics and repair shops - Hardware store employees - Plumbers and electricians - Furniture assembly - Industrial maintenance - Engineering and manufacturing SUBSCRIPTION OPTIONS - Weekly subscription with auto-renewal - Lifetime access with one-time purchase Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Privacy Policy: https://sites.google.com/view/screwidentifier-boltsize/ana-sayfa Terms of Use: https://sites.google.com/view/screw-identifier-bolt-size/ana-sayfa
Screenshots
Verdict
The clearest difference is rating: Screw Identifier at 3.6 against Bolt Thread Identifier's 2.3. Screw Identifier also leads on update cadence (every 5 months vs every 11 months) and ratings volume (20 vs 3). Bolt Thread Identifier's advantage is in-app purchases (none vs 9) and review sentiment (33% vs 0%). On price, ads 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
Both are free to download. Screw Identifier sells 8 in-app purchases, starting at $4.99 per 7 days. Bolt Thread Identifier asks for nothing beyond the download.
Screw Identifier holds the better App Store score, 3.6 against 2.3. That said, the two scores are not equally well evidenced: Screw Identifier has 20 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 33% of Bolt Thread Identifier's written reviews are positive against 0% of Screw Identifier's, so the app with the better star average is not the one people write more warmly about.
Bolt Thread Identifier ships an update every 11 months, Screw Identifier every 5 months. The most recent releases landed on September 20, 2026 and September 11, 2026 respectively.
| Parameter | Bolt Thread Identifier | Screw Identifier |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (3 ratings) | 3.6 (20 ratings) — better |
| Positive reviews | 33.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 | 20 — better |
| Update frequency | Every 11 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 58 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Geared Design Consulting L.L.C. | veysel yesilmen |
Customer experience
Bolt Thread Identifier
Screw Identifier
In-app purchases
Bolt Thread Identifier
No in-app purchases
Screw Identifier
- Weekly Access$4.997 Days
- Get Premium Access7 Days trial$4.997 Days
- Premium Weekly3 Days trial$4.997 Days
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- Premium Weekly7 Days trial$5.997 Days
- Get Premium Access$19.991 Year
- Premium Yearly3 Days trial$29.991 Year
- Premium Yearly3 Days trial2 variants$39.991 Year
- Lifetime Access$19.99
Questions
Is Bolt Thread Identifier free?
Is Screw Identifier free?
Which has better reviews, Bolt Thread Identifier or Screw Identifier?
Do Bolt Thread Identifier or Screw Identifier have ads?
Which is updated more often, Bolt Thread Identifier or Screw Identifier?
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