Comparison

Thread Pitch Calculator vs Bolt Thread Identifier

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

Head to head
About

Thread Pitch Calculator

Easily measure the thread pitch of various screws and bolts directly on your device's screen. This utility app calibrates automatically to your screen width for accurate measurements of metric, US, NPT, and BSPT threads.

Highlights
  • Measure thread pitch on screen
  • Automatic screen width calibration
  • Supports metric thread sizes
  • Supports US thread sizes
  • Supports NPT and BSPT threads
  • Measures metric screw sizes
Features
Currently charting
Read full description

Measure and identify screw and thread pitch quickly and easily with Thread Pitch Calculator. No more guessing with paper, rulers, or physical thread gauges. Simply open the app, place the screw or thread against the screen, and compare it with the on-screen thread patterns. The app automatically calibrates to your screen size for accurate measurement. Whether you're working with metric screws, US threads, or pipe threads, Thread Pitch Calculator helps you find the right thread size and pitch in seconds. Key Features Measure thread pitch directly on your phone screen Automatic screen calibration Easy-to-use thread measurement interface Compare screws with visual thread patterns Metric thread sizes US thread sizes NPT (National Pipe Taper) threads BSPT (British Standard Pipe Taper) threads Metric screw sizes Quick reference for common thread specifications Simple and convenient tool for workshops, DIY, repair, and maintenance Supported Thread Types Metric Threads Identify common metric thread pitches and sizes. US Threads Check common US thread sizes and thread pitches. NPT Threads Reference National Pipe Tapered thread sizes. BSPT Threads Check British Standard Pipe Taper thread sizes. Metric Screw Sizes Compare and identify common metric screw dimensions. Perfect For DIY projects Mechanics Engineers Workshops Hardware professionals Maintenance and repair Machine shops Home improvement Screw and fastener identification Stop carrying a ruler or guessing the thread pitch. Use Thread Pitch Calculator as a convenient thread measurement and reference tool wherever you work.

About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

Thread Pitch Calculator4 screens
Bolt Thread Identifier4 screens

Verdict

The call

The clearest difference is price: Bolt Thread Identifier at Free against Thread Pitch Calculator's $4.99. Bolt Thread Identifier also leads on rating (2.3 vs 1.8) and update cadence (every 11 months vs every 51 months). Thread Pitch Calculator's advantage is chart position (#192 vs unranked) and iOS requirement (12.0 vs 26.0). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Bolt Thread Identifier is free to download; Thread Pitch Calculator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Bolt Thread Identifier holds the better App Store score, 2.3 against 1.8. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 17% of Thread Pitch Calculator's written reviews are positive against 33% of Bolt Thread Identifier's.

UpkeepUpdate frequency

Thread Pitch Calculator ships an update every 51 months, Bolt Thread Identifier every 11 months. The most recent releases landed on September 14, 2026 and September 20, 2026 respectively.

Scorecard7 real differences · 4 level
Thread Pitch Calculator versus Bolt Thread Identifier: the parameters behind the verdict, then further details
ParameterThread Pitch CalculatorBolt Thread Identifier
Price$4.99Free — better
Rating1.8 (4 ratings)2.3 (3 ratings) — better
Positive reviews16.7% of reviews33.3% of reviews — better
Number of ratings4 — better3
Update frequencyEvery 51 monthsEvery 11 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#192 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better26.0
Further details — not scored
Size2 MB58 MB
Age rating4+4+
DeveloperBhavinkumar SatashiyaGeared Design Consulting L.L.C.

Customer experience

Thread Pitch Calculator

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews6 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

Bolt Thread Identifier

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Thread Pitch Calculator

No in-app purchases

None

Bolt Thread Identifier

No in-app purchases

Questions

Is Thread Pitch Calculator free?
Thread Pitch Calculator costs $4.99, with no in-app purchases.
Is Bolt Thread Identifier free?
Bolt Thread Identifier is free to download, with no in-app purchases.
Which has better reviews, Thread Pitch Calculator or Bolt Thread Identifier?
Bolt Thread Identifier is rated higher. Thread Pitch Calculator averages 1.8 out of 5 from 4 ratings, while Bolt Thread Identifier averages 2.3 from 3 ratings.
Do Thread Pitch Calculator or Bolt Thread Identifier have ads?
Neither Thread Pitch Calculator nor Bolt Thread Identifier shows ads.
Which is updated more often, Thread Pitch Calculator or Bolt Thread Identifier?
Thread Pitch Calculator ships an update every 51 months, and Bolt Thread Identifier every 11 months. Most recently, Thread Pitch Calculator was updated on September 14, 2026 and Bolt Thread Identifier on September 20, 2026.

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