Screw Identifier vs ThreadChaser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
ThreadChaser
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ThreadChaser is the fastest way to identify an unknown thread — on the shop floor, in the field, or at the workbench. Simply measure the major diameter and pitch of any fastener or threaded component, enter the values, and ThreadChaser instantly searches its database of metric and imperial thread standards to find the closest matches. No more guessing, no more flicking through reference books, no more ordering the wrong tap or die. Who it's for ThreadChaser is built for engineers, machinists, mechanics, maintenance technicians, and anyone who regularly works with threaded fasteners. Whether you're identifying a mystery bolt on a piece of imported machinery, matching a thread on a worn component, or specifying a tap drill size for a new hole, ThreadChaser gives you the answer in seconds. What it covers: ISO Metric coarse and fine threads (M1 through M68) Unified National threads — UNC, UNF, and UNEF British Standard — BSW, BSF, and BSP With more standards being added regularly What you get: Instant thread matching with a tolerance you control Pitch diameter and minor diameter for every result Recommended tapping drill sizes Internal and external thread modes Technical thread profile diagrams A full reference library of thread standards and formulas How to use: Use a digital calliper to measure the major diameter or internal bore of the thread. Use a thread pitch gauge or ruler to measure the pitch (distance between thread crests). Enter both values, select your preferred standards, and hit Search. ThreadChaser ranks every match by how closely it fits your measurement. Terms of Use: https://www.threadchaser.com/TERMS
Screenshots
Verdict
The clearest difference is update cadence: ThreadChaser at every 5 days against Screw Identifier's every 5 months. Screw Identifier's advantage is iOS requirement (13.0 vs 18.6). On price, ads, 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
Both are free to download. Screw Identifier sells 8 in-app purchases, starting at $4.99 per 7 days and ThreadChaser sells 1 in-app purchase, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.
Screw Identifier ships an update every 5 months, ThreadChaser every 5 days. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.
| Parameter | Screw Identifier | ThreadChaser |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (23 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 5 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 52 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | veysel yesilmen | JAMIE SAM PARTOVI |
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
ThreadChaser
- ThreadChaser Pro7 Days trial$2.991 Year
Questions
Is Screw Identifier free?
Is ThreadChaser free?
Do Screw Identifier or ThreadChaser have ads?
Which is updated more often, Screw Identifier or ThreadChaser?
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