Concentrator app icon

Apps Like Concentrator for iPhone and iPad

by Johannes Loeffler★ 5.01 ratingsEducationFreeData updated 2026-09-06

Ranked alternatives

Showing 121–140 of 1,000 ranked alternatives.

  1. Units Converter & Calculator app icon

    Units Converter & Calculator

    Alok Singh

    Convert of temperature, distance, weight, and speed

    Convert of temperature, distance, weight, and speed. Switch between Celsius and Fahrenheit, miles and kilometers, pounds and kilograms, and kilometers per hour and miles per hour. Perform calculations and save frequently used conversions.

    ★ 4.732 ratingsProductivityFreeData updated 2026-09-26
  1. Kansas DMV Permit Practice app icon

    Kansas DMV Permit Practice

    S Mehta

    Take tests and track progress

    Prepare for the DMV certification exam with tests based on the official state handbook. Answer multiple-choice questions, review explanations, and track progress. Complete mock exams to simulate real testing conditions.

    ★ 4.889 ratingsEducationFreeData updated 2026-09-06
  2. Missouri CDL Permit Practice app icon

    Missouri CDL Permit Practice

    S Mehta

    Take tests and track progress

    Prepare for CDL certification exams with state-specific tests. Review official CDL handbook content. Take multiple-choice quizzes and receive instant feedback. Track progress and retake tests as needed.

    ★ 4.874 ratingsEducationFreeData updated 2026-09-06
  3. EchoGuide by ASE app icon

    EchoGuide by ASE

    American Society of Echocardiography

    Select tools, calculate, chart results

    Access cardiac calculators, algorithms, and charts for left and right ventricles, atria, aorta, and aortic regurgitation. Select and save favorite tools for quick access. View detailed measurements and guidelines for cardiac care.

    ★ 4.740 ratingsMedicalFreeData updated 2026-09-06
  4. Oklahoma CDL Permit Practice app icon

    Oklahoma CDL Permit Practice

    S Mehta

    Take tests and track progress

    Prepare for CDL certification exams with tests based on official CDL handbooks. Answer multiple-choice questions, review explanations, and track progress. Simulate exam conditions and retake tests for reinforcement.

    ★ 4.772 ratingsEducationFreeData updated 2026-09-06
  5. Equations-X app icon

    Equations-X

    Riyad Habash

    Calculate areas and volumes of polygons

    Calculate areas and volumes of various shapes including squares, rectangles, triangles, circles, and ellipses. Input dimensions to get formulas and results. View volume calculations for cubes, cylinders, cones, and spheres.

    ★ 4.414 ratingsEducationFreeData updated 2026-09-12
  6. Chemical Engineering AppSuite HD app icon

    Chemical Engineering AppSuite HD

    Vector 254 LLC

    Convert units, calculate formulas, track reactions

    Calculate reactions with built-in equations and thermodynamic data. Convert units for pressure, temperature, and concentration. Solve material and energy balance problems. Access property tables for gases and liquids.

    ★ 4.681 ratingsProductivity$0.99Data updated 2026-10-09
  7. EZPZ Unit Converter app icon

    EZPZ Unit Converter

    Martin Engelsgjerd

    Convert units with saved favorites

    Convert units across 17 categories including currency, temperature, length, weight, speed, area, and volume with over 1000 conversions and 160+ live currency rates. Save frequently used conversions and access them via a widget.

    ★ 4.850 ratingsUtilitiesFreeData updated 2026-09-10
  8. Arkansas CDL Permit Practice app icon

    Arkansas CDL Permit Practice

    S Mehta

    CDL tests and track progress

    CDL licensing tests based on official state handbooks. Complete state-specific exams with detailed questions. Review results and track progress. Access study materials and scenarios. Prepare for the CDL exam.

    ★ 4.867 ratingsEducationFreeData updated 2026-09-06
  9. Kentucky CDL Permit Practice app icon

    Kentucky CDL Permit Practice

    S Mehta

    CDL tests and track progress

    Study for the CDL license exam with tests based on official state handbooks. Answer multiple-choice questions and review explanations. Track progress and retake tests to reinforce knowledge.

    ★ 4.766 ratingsEducationFreeData updated 2026-09-06
  10. Mississippi CDL Permit Test app icon

    Mississippi CDL Permit Test

    S Mehta

    Take practice tests and track progress

    Practice CDL licensing tests based on state guidelines. Complete multiple-choice questions and review explanations. Track progress and retake tests as needed. Access official CDL handbook content for study.

    ★ 4.875 ratingsEducationFreeData updated 2026-09-06
  11. Colorado CDL Permit Practice app icon

    Colorado CDL Permit Practice

    S Mehta

    CDL tests and track progress

    CDL exams based on official state handbooks. Take tests tailored to your state's regulations. Review questions and answers. Track progress and retake tests as needed.

    ★ 4.759 ratingsEducationFreeData updated 2026-09-06

How we rank alternatives

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