Tack: Welding Calculator
MIG TIG Stick Amps & Charts
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Welding and pipe-fitting calculations for the shop floor: weld settings, fillet sizes, heat input, pipe offsets, elbows and flanges. Every number shows its working.
Welding settings for the joint in front of you.
Pick a process, pick a thickness. Tack gives you amperage, voltage, wire feed speed, travel speed, shielding gas and stickout — in two taps, with no Calculate button anywhere.
SHOWS ITS WORK
Every number opens to the arithmetic that produced it: the formula, your numbers substituted into it, and where the value came from. Nothing is reconstructed for display.
IT REFUSES RATHER THAN GUESS
Ask for spray transfer in a vertical position and it says no, and says why. Past the range a rule of thumb is honest over, it stops instead of extrapolating. That is the whole point of the tool.
THE CALCULATORS
• Weld settings — amps, volts, wire speed, gas, travel
• Fillet weld sizing — throat, code minimums, capacity
• Heat input and arc energy, both conventions
• Wire feed speed and the burnoff constant, both directions
• Duty cycle, deposition rate, consumable and job cost
• Weld group as a line, material weight, hardness conversion
• Shrinkage and distortion, cutting settings, unit converter
• Carbon equivalent, stainless metallurgy and ferrite number
• Electrode classification decoder and welding symbols
• Tungsten, shielding gas, lens shades, filler metal selector
PIPE FITTING
• Pipe offsets: travel, run and cut length, simple or rolling
• Miter elbow: cut angle, segment lengths, cut-back table
• Branch saddle: cut depths around a tee or lateral branch
• Elbows & spool cut (ASME B16.9, ГОСТ 17375): elbow take-outs and the pipe to cut
• Flanges (Pro; ASME B16.5 Class 150/300, ГОСТ 33259 PN 10–40): dimensions, bolt holes and take-off
THE REFERENCE
Defects with cause and correction. Visual acceptance limits by loading case. Joints and preparation. Positions. Metal identification. Heat-affected zone. Safety — fume, hot work, confined space, protective equipment. A plain glossary.
FREE, PERMANENTLY
Carbon steel settings, the symbol decoder, fillet sizing, heat input, the gas guide and every page about safety are free and always will be. So is the arithmetic behind every number, including inside a tool you are only previewing.
WORKS IN THE SHOP
Everything runs in airplane mode. Calculations never leave the phone. Twenty-two languages, imperial and metric.
Starting parameters and reference data. A qualified procedure, the governing code and the engineer of record govern — verify on a coupon before production work.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New in 1.1.0:
• Elbows & spool cut (free): ASME B16.9 and ГОСТ 17375 elbow take-outs, and the cut length of a spool between elbows and flanges. Use in Offsets sends a take-out to Pipe offsets.
• Flanges (Pro): ASME B16.5 Class 150/300 and ГОСТ 33259 PN 10–40 dimensions and the bolt-hole layout.
New in 1.0.2:
• Pipe offsets, miter elbows and branch saddle ordinates.
• Numbers and measurements read correctly in Arabic and Hebrew.
The developer, Chirag Arora, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Chirag Arora
- Size
- 55.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tack Pro - Lifetime $59.99
- Tack Pro - Monthly $4.99
- Tack Pro - Yearly $29.99
- Copyright
- © 2026 Chiaro Apps