Comparison

Screw Identifier vs Screw Size Drill Bit Chart

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

Head to head
About

Screw Identifier

Instantly identify screws, bolts, and nuts using AI. Measure dimensions, access detailed specifications, and get expert guidance from a chatbot. Ideal for DIYers, mechanics, and hobbyists.

Highlights
  • AI-powered fastener identification
  • Precise measurement with ruler reference
  • Detailed specifications (type, size, material)
  • AI chatbot for expert guidance
  • Scan history and reports
  • Intuitive interface
Features
Read full description

Identify screws, bolts, and nuts instantly with Screw Identifier – your essential fastener identification app powered by advanced AI. Perfect for DIY enthusiasts, professional mechanics, contractors, and hardware hobbyists. Identify fasteners, measure dimensions, and access detailed specifications with just a photo. Advanced AI-Powered Fastener Identification With one tap, Screw Identifier uses cutting-edge AI to deliver detailed fastener analysis. From common wood screws and machine screws to specialized bolts, nuts, washers, and threaded fasteners, this app is your go-to solution for hardware identification and measurement. Key Features: - Screw identifier with AI-powered detection - Bolt scanner with detailed measurements - Nut detector with type, size, thread pitch identification - Hardware identifier with real-time processing - Multiple fastener analysis in one image - Thread pitch and dimension readouts - Metric and imperial unit support Comprehensive Fastener Analysis The app provides detailed information: estimated measurements (length, diameter, thread pitch, head size), fastener type classification (Phillips head, hex head, flat head, pan head, socket head), standard specifications (metric M3-M10, imperial #4-#12), material and finish identification, thread identification (UNC, UNF, metric thread), and compatible tools recommendations. AI Chatbot Assistant Get expert guidance from our built-in AI assistant for fastener types, specifications, tool selection, compatibility advice, and technical guidance. Learn about fastener standards (ANSI, ISO, DIN, JIS) and get replacement part recommendations. Complete History & Reports Save all your fastener identifications, access detailed reports, export measurements and specifications, and build your own fastener record. Pro Plan Benefits: - Unlimited fastener identifications (no daily limits) - Multiple fastener analysis in one image - Detailed report access and export options - Advanced measurement tools - No ads and priority AI processing - Watermark control on shared results Perfect for DIY projects, automotive repair, construction, electronics repair, furniture assembly, woodworking, and industrial maintenance. Please note: results are AI-generated estimates. Verify critical dimensions with calipers or a thread gauge before buying or installing parts. Subscription Details: Payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renewal is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period at the rate of your selected plan. You can manage or cancel your subscription by going to your Account Settings after purchase. End User License Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://fangfang.me/docs/app-terms-of-use Privacy Policy: https://fangfang.me/docs/app-privacy-policy

About

Screw Size Drill Bit Chart

Features
Read full description

Which drill bit for a #8 screw in hardwood? ScrewGuide answers in two taps — the complete screw, bolt and drill-bit chart with the exact pilot hole for the material in front of you, fully offline. Printed charts give you one number and hope you guessed the material right. ScrewGuide is material-aware: pick a screw, pick softwood, hardwood, MDF/chipboard, drywall, sheet metal or plastic, and it works out the pilot, clearance and countersink diameter for that exact combination — then names the nearest real drill bit you actually own, in millimetres or inches. WHAT YOU GET - The right pilot hole every time, calculated per material, so boards stop splitting and screws stop stripping - 20 screw sizes cross-referenced: metric M2-M12, US gauge #4-#14 and tapered wood screws, with major and minor diameter, thread pitch, TPI, head diameter and typical lengths - A full 68-bit drill chart in one place: metric, fractional, number and letter bits with decimal and millimetre equivalents - Measured something and don't know what it is? Dial in a diameter and get the nearest screw and the nearest drill bit instantly - A metric tap-drill chart, so you can thread a hole without hunting a reference online - Head styles and drive types decoded — Phillips, Pozidriv, Square/Robertson, Torx and hex — plus why pilot holes work at all PERFECT FOR - Woodworkers and carpenters who refuse to split another board - DIYers assembling flat-pack, hanging shelves or mounting a TV - Makers and 3D-printing hobbyists living in M3 and M4 hardware - Trades and hobby mechanics switching between metric and imperial on the same job WHY NOT JUST GOOGLE IT? Because the garage has no signal, your hands are dirty and the search results argue with each other. ScrewGuide keeps every number on the device, opens instantly, and gives one clear answer per material instead of ten forum opinions. Save the sizes you use most and they are one tap away next time. PRIVACY No account, no sign-up, no ads, no tracking, no internet connection required. Your saved sizes and unit preference stay on your iPhone. FULL ACCESS Material-aware pilot, clearance and countersink sizing, the complete drill-bit chart, the tap-drill chart and the size finder unlock with full access. Choose a weekly or yearly subscription, or pay once for lifetime access — one payment, no renewal. Ten common screw sizes stay browsable for free so you can try the reference first. Open ScrewGuide before the drill comes out and get the hole right the first time. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

Screenshots

Screw Identifier4 screens
Screw Size Drill Bit Chart4 screens

Verdict

The call

The clearest difference is ads: Screw Size Drill Bit Chart at none against Screw Identifier's shown. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Screw Identifier sells 5 in-app purchases, starting at $2.99 per 7 days and Screw Size Drill Bit Chart sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard1 real difference · 9 level
Screw Identifier versus Screw Size Drill Bit Chart: the parameters behind the verdict, then further details
ParameterScrew IdentifierScrew Size Drill Bit Chart
PriceFreeFree
Rating4.1 (23 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings23 — better—
Update frequencyMonthlyMonthly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size101 MB23 MB
Age rating4+4+
DeveloperFANG FANGPhuc Pham

In-app purchases

5 purchases

Screw Identifier

Subscriptions4
  • Weekly Pro3 Days trial$2.997 Days
  • Weekly Pro$3.997 Days
  • Annual Pro3 Days trial$19.991 Year
Show 1 more
  • Yearly Pro$19.991 Year
One-time1
  • Lifetime Pro$29.99
3 purchases

Screw Size Drill Bit Chart

Subscriptions2
  • Countersink Pro, Weekly$2.997 Days
  • Thread Finder, Yearly$14.991 Year
One-time1
  • Full Fastener Guide, One-Time$29.99

Questions

Is Screw Identifier free?
Screw Identifier is free to download, with in-app purchases available.
Is Screw Size Drill Bit Chart free?
Screw Size Drill Bit Chart is free to download, with in-app purchases available.
Do Screw Identifier or Screw Size Drill Bit Chart have ads?
Screw Identifier shows ads; Screw Size Drill Bit Chart does not.
Which is updated more often, Screw Identifier or Screw Size Drill Bit Chart?
Screw Identifier ships an update monthly, and Screw Size Drill Bit Chart monthly. Most recently, Screw Identifier was updated on November 5, 2026 and Screw Size Drill Bit Chart on November 10, 2026.

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