Comparison

Screw Size Drill Bit Chart vs Thread Chart

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

Head to head
About

Screw Size Drill Bit Chart

Features
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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

About

Thread Chart

Features
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Thread Chart: Tap Drill & CNC is a professional reference and calculation tool designed for machinists, CNC operators, engineers, fabricators, mechanics, and manufacturing professionals. Quickly find common thread specifications, tap drill sizes, thread pitches, and machining information without carrying printed charts. Use the app as a convenient on-the-job reference for thread selection, drilling, tapping, and CNC machining tasks. Key Features: • Comprehensive thread size reference • Tap drill size lookup • Metric and Imperial thread support • Thread pitch information • Major, minor, and pitch diameter references • CNC threading calculation tools • Internal and external thread information • Fast search and easy filtering • Clear, shop-friendly interface • Useful for machining, fabrication, and engineering Perfect For: • CNC Machinists • Machine Shop Professionals • Engineers • Fabricators • Mechanics • Manufacturing Technicians • Engineering Students • DIY Machining Enthusiasts Keep essential thread and tap drill information at your fingertips with Thread Chart: Tap Drill & CNC. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://semiconhub.in/manager/privacy.html Terms and Condition : https://semiconhub.in/manager/tcondition.html

Screenshots

Screw Size Drill Bit Chart4 screens
Thread Chart4 screens

Verdict

The call

The clearest difference is device support: Thread Chart at 3 against Screw Size Drill Bit Chart's 1. Thread Chart also leads on iOS requirement (15.6 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Screw Size Drill Bit Chart sells 3 in-app purchases, starting at $2.99 per 7 days and Thread Chart sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Ā· 4 level
Screw Size Drill Bit Chart versus Thread Chart: the parameters behind the verdict, then further details
ParameterScrew Size Drill Bit ChartThread Chart
PriceFreeFree
Update frequencyMonthly—
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size23 MB50 MB
Age rating4++4
DeveloperPhuc PhamSachinbhai Surani

In-app purchases

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
1 purchases

Thread Chart

One-time1
  • Lifetime Premium$14.99

Questions

Is Screw Size Drill Bit Chart free?
Screw Size Drill Bit Chart is free to download, with in-app purchases available.
Is Thread Chart free?
Thread Chart is free to download, with in-app purchases available.
Do Screw Size Drill Bit Chart or Thread Chart have ads?
Neither Screw Size Drill Bit Chart nor Thread Chart shows ads.

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