Tolerance Helper app icon

Apps Like Tolerance Helper for iPhone and iPad

Calculate tolerances for holes and shafts

Calculate dimensions with ISO standard tolerances for holes and shafts. Input size and class to determine limits. Reference complete tables for standard intervals. Support for both hole and shaft designations.

by Dmitriy Trofimov★ 0.00 ratingsReferenceFreeData updated 2026-09-06

Ranked alternatives

Showing 61–80 of 1,000 ranked alternatives.

  1. Electrician Handbook — Basics app icon

    Electrician Handbook — Basics

    Sergey Vavaev

    Access theory, diagrams, and calculators offline

    ’s provides access to electrical theory topics, including exercises with answers. Features interactive diagrams for hands-on learning. Includes calculators and formulas for electrical calculations. Works offline without ads or subscriptions.

    ★ 4.8893 ratingsReferenceFreeData updated 2026-09-06
  1. Learn Electrical Engineering app icon

    Learn Electrical Engineering

    Pollmine.Com

    AI coach for electrical engineering knowledge

    The app provides bite-sized videos and quizzes to help users learn Electrical Engineering. An AI-driven coach guides users through the material, aiming to increase knowledge.

    ★ 4.4301 ratingsEducationFreeData updated 2026-09-29
  2. Useful Periodic Table Lite app icon

    Useful Periodic Table Lite

    Mind Trends LLC

    Periodic table with element properties.

    The app provides a periodic table of elements with their properties. It includes a unit converter and links to Wikipedia for additional information.

    ★ 5.01 ratingsEducationFreeData updated 2026-10-07
  3. GLFL app icon

    GLFL

    Creatrix

    ★ 3.112 ratingsEducationFreeData updated 2026-09-12
  4. iRedstone app icon

    iRedstone

    riedel.wtf apps S.L.

    Build redstone circuits with step-by-step guides

    Learn to build complex redstone machines with step-by-step guides and over 1300 screenshots. Access more than 300 detailed instructions to create advanced mechanisms. View tutorials for redstone circuits, logic gates, and automated systems.

    ★ 4.7449 ratingsEducation$1.99Data updated 2026-09-08
  5. Drill Calc app icon

    Drill Calc

    Black Cat Systems

    Calculate bit size for threaded holes

    Calculate bit size for threaded holes using bolt diameter, thread pitch, and percentage for inch and metric threads. Display close fit hole sizes for common sizes. Provide tables for standard inch fractional and numeric bit sizes.

    ★ 4.119 ratingsUtilities$2.99Data updated 2026-09-08
  6. HazMat Reference app icon

    HazMat Reference

    784767 Alberta Inc.

    Look up hazard info instantly

    Access hazardous material data including NIOSH, CFR/HMT, NFPA, GHS, and CAMEO information. Search, sort, and filter materials by properties or response guidelines. View emergency response guides and safety regulations for handling and storage.

    ★ 4.81,769 ratingsReference$4.99Data updated 2026-10-31
  7. DoD Systems Engineering app icon

    DoD Systems Engineering

    Russell Shannon

    Pocket reference for complex reviews.

    The app offers a pocket reference for engineers and logisticians. It details the Department of Defense Systems Engineering Technical Review process, including acronyms, Technology Readiness Levels, and review information sorted by phases.

    ★ 3.84 ratingsReferenceFreeData updated 2026-09-27
  8. A NEC® Quick Reference app icon

    A NEC® Quick Reference

    Alan Cave

    Access code sections and requirements

    Access NEC code sections for electrical installations. Search by topic or keyword. View diagrams and tables. Save and annotate code excerpts. Share references via email or messaging.

    ★ 3.713 ratingsReference$1.99Data updated 2026-09-08
  9. Concrete Calculator Tools app icon

    Concrete Calculator Tools

    Peth Pty Ltd

    Calculate volumes and costs

    Calculate volumes for slabs, walls, and columns. Input dimensions and material types. Estimate material quantities and costs. Export results and share via email. Sync across devices for project management.

    ★ 4.814 ratingsUtilitiesFreeData updated 2026-09-06

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.