Sub Buddy app icon

Apps Like Sub Buddy for iPhone and iPad

Use slide-rule for U-boat attacks

A digital U-boat attack simulation allows users to perform torpedo calculations and submarine mission planning.

by Zoe Summers★ 5.010 ratingsEducation$5.99Data updated 2026-09-18

Sub Buddy screenshots

Ranked alternatives

Showing 501–520 of 1,000 ranked alternatives.

  1. Explain 3D FREE: Understand how stuff works app icon

    Explain 3D FREE: Understand how stuff works

    ePic design s.r.o.

    Explore 3D models and simulations

    Explore interactive 3D simulations to how mechanical systems work. View a 4-stroke engine, car clutch, manual transmission, and disc brake in detail. Manipulate objects, observe internal mechanisms, and gain insights through visual learning.

    ★ 2.05 ratingsEducationFreeData updated 2026-09-09
  1. CalcBC Formulas app icon

    CalcBC Formulas

    Ilango Radhakrishnan

    Mathematics formulas for calculus students.

    The app provides formulas for Calculus AB and BC. It includes Trig Identities, Derivative Rules, the Fundamental Theorem of Calculus, and Series formulas.

    ★ 3.54 ratingsEducationFreeData updated 2026-09-28
  2. Bow Arrow Castle Knight app icon

    Bow Arrow Castle Knight

    Ali Hassan

    Shoot arrows, break defenses, conquer dungeons, defeat

    Play as an archer in a medieval battle, defend castles, and defeat enemies in a dark dungeon. Use bows and crossbows to attack enemies, upgrade weapons, and complete missions to progress through levels.

    ★ 1.45 ratingsGamesFreeData updated 2026-09-13
  3. Colors Shapes Numbers 4+ app icon

    Colors Shapes Numbers 4+

    Shark Intelligence, s.r.o.

    Play with real voices and learn ,

    A game teaches , , left-right orientation, , and basic math. It uses real human voices in 8 languages for spoken instructions. Children listen, learn, and then use ‘blind’ cards to demonstrate knowledge.

    ★ 3.02 ratingsGamesFreeData updated 2026-09-08
  4. 8diagnosis app icon

    8diagnosis

    Shemar Powell

    Diagnose car issues with AI feedback

    Diagnose car issues by describing symptoms to AI. Get possible causes and solutions. View step-by-step explanations and maintenance tips. Share findings with mechanics for further assistance.

    ★ 5.011 ratingsEducationFreeData updated 2026-09-06
  5. BallBreaker app icon

    BallBreaker

    Ivan Cerra de Castro

    Remove bricks, collect power-ups, avoid enemies.

    The app involves removing bricks with a ball and controlling ball rebounds with a ship. The user's ship can collect hidden power-up capsules, and players slide their finger to move the ship while avoiding enemies across 35 levels.

    ★ 3.511 ratingsEntertainment$1.99Data updated 2026-09-17

How we rank alternatives

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