Comparison

Flange Hole Marker Calc vs ThreadChaser

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

Head to head
About

Flange Hole Marker Calc

This engineering tool simplifies flange hole layout for professionals. It offers three calculators for accurate marking of equispaced, angled, or equivalent holes, saving time and reducing errors in fabrication and machining. Works offline.

Highlights
  • Equispaced Hole Calculator
  • Holes at Any Angle Calculator
  • Equivalent Holes Calculator
  • Improves accuracy
  • Saves time
  • Easy-to-use interface
  • Offline functionality
Features
Read full description

Flange Hole Marker Calc is a practical engineering tool designed for machinists, fabricators, mechanical engineers, and workshop professionals who need accurate flange hole marking. This app provides three essential calculators to simplify flange layout work and reduce manual errors. Whether you are marking equispaced holes, placing holes at a specific angle, or calculating equivalent hole counts, Flange Hole Marker Calc delivers fast and reliable results directly on your device. Included Calculators: Equispaced Hole Calculator Holes at Any Angle Calculator Equivalent Holes Calculator Key Benefits: Improves accuracy in flange hole layout Saves time during fabrication and machining Easy-to-use interface for quick calculations Ideal for mechanical, industrial, and workshop use Works offline with no internet required Flange Hole Marker Calc is the perfect companion for professionals and students who need dependable flange hole calculations anytime, anywhere. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

About

ThreadChaser

Read full description

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

Flange Hole Marker Calc4 screens
ThreadChaser4 screens

Verdict

The call

The clearest difference is update cadence: ThreadChaser at every 5 days against Flange Hole Marker Calc's every 5 months. Flange Hole Marker Calc's advantage is iOS requirement (15.6 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flange Hole Marker Calc sells 1 one-off in-app purchase 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.

UpkeepUpdate frequency

Flange Hole Marker Calc ships an update every 5 months, ThreadChaser every 5 days. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 7 level
Flange Hole Marker Calc versus ThreadChaser: the parameters behind the verdict, then further details
ParameterFlange Hole Marker CalcThreadChaser
PriceFreeFree
Rating4.7 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 5 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.6
Further details — not scored
Size45 MB2 MB
Age rating4+4+
DeveloperNanjibhai GorasiyaJAMIE SAM PARTOVI

In-app purchases

1 purchases

Flange Hole Marker Calc

One-time1
  • Lifetime premium$9.99
1 purchases

ThreadChaser

Subscriptions1
  • ThreadChaser Pro$2.991 Year

Questions

Is Flange Hole Marker Calc free?
Flange Hole Marker Calc is free to download, with in-app purchases available.
Is ThreadChaser free?
ThreadChaser is free to download, with in-app purchases available.
Do Flange Hole Marker Calc or ThreadChaser have ads?
Neither Flange Hole Marker Calc nor ThreadChaser shows ads.
Which is updated more often, Flange Hole Marker Calc or ThreadChaser?
Flange Hole Marker Calc ships an update every 5 months, and ThreadChaser every 5 days. Most recently, Flange Hole Marker Calc was updated on October 7, 2026 and ThreadChaser on October 18, 2026.

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