Apps Like IC 555 Timer for iPhone and iPad
IC 555 Timer screenshots
Ranked alternatives
Showing 61–80 of 1,000 ranked alternatives.



Robo Rocket
Fehners Software LLP
Fix circuits, clean spills, and organize parts
Help robots complete chores like cleaning oil spills and organizing parts. Fix the control panel and mend circuits. Explore hidden interactive areas and find the hidden robot mouse.

CRUMB
Vital Group Limited
Build circuits in 3D with real components
Build and test electronic circuits in a 3D environment. Construct prototypes without physical components. Explore transistor functions and audio filtering. Access a component catalog for circuit design and experimentation.

Mike Holt's Electrical Toolbox
Mike Holt Enterprises Inc.
Size conductors, calculate voltage drop, select circuit
Provides conductor sizing calculations, circuit protection sizing, raceway sizing, and equipment grounding conductor sizing for heating and air-conditioning equipment.


Logic Circuit Simulator
Ali Mert TUFEKCI
Simulate circuits and test designs
Simulate circuits using components like AND, OR, NOT gates, flip-flops, and multiplexers. Build and test circuits with drag-and-drop components. View output through monitors and adjust inputs manually. Save and share designs.

Esoteric Synth
ANTHONY DI FURIA
Generate synthetic sounds with modulated oscillators
Create synthetic sound events using 5 oscillators with amplitude and frequency modulation. Adjust sound parameters in EventMode for long durations or GrainMode for short, dense sounds. Generate complex textures, glitches, drones, and point sounds.

Transistors Handbook
Centro Studi Informatica di Danilo Priore
Design circuits with transistor data
Learn about , including their function, structure, and applications. Search for transistor datasheets. Update and share transistor information with other users. Design circuits using transistor specifications.

CTisus iLecture Series 26
Elliot Fishman
Learn radiology with expert lectures
Access lectures on radiology topics divided by organ systems or additional subjects like protocol design and 3D imaging. View weekly updates and annual revisions. Download and review content for learning or knowledge updates.

Electronics Circuit Calculator
Mustafa Mohammed
Calculate circuits, convert units, test experiments
Solve electrical problems by calculating voltage, current, and resistance. Input values to determine unknown variables. Perform unit conversions and conduct experiments. Store and retrieve calculation results.

Breath & Heart
iamHeart Inc
Regulate , track heartbeat
Track rate and rhythm through guided breathing exercises. Adjust patterns to sync with heartbeat. Set reminders for daily practice. Monitor progress over time with visual feedback. Share sessions and insights with others.


Writerly
Russell Archer
Write, practice, and improve your craft
Help writers develop skills with exercises, prompts, and advice. Use AI tools to brainstorm ideas, research books, create characters, and generate story outlines. Track progress and set writing goals.

Hip Hop Drummer
Lumbeat Ltd.
Create beats with drum samples
Create beats using a drum machine with over 1000 curated sounds organized by frequency and length. Edit grooves in banks like Hip Hop, Trap, and AfroBeats. Adjust rhythms and export projects for use in music production.

NEC Electrician Exam Prep 2026
Shenzhen New Beginning Internet Co., Ltd
Study for exams and track progress
Study for the Journeyman with practice tests, flashcards, and detailed study guides. Review electrical codes and safety procedures. Track progress and receive performance feedback.

Puzzle Games for Kids to Learn
PLAY AND LEARN EDUCATIONAL GAMES FOR KIDS PLEI END LERN EDYUKESHINAL GEIMS FO KIDS, TOO
Assemble puzzles and watch scenes come
Solve animated jigsaw puzzles with animals, robots, and dinosaurs. Choose from 5 game modes and 3 difficulty levels. Drag and drop pieces to complete images. Watch animations play as puzzles are solved.


Engage Brain Training
AppyNation Ltd
Solve puzzles daily and track progress
Solve logic puzzles daily with Sudoku, Nonogram, and Kakuro. Access past puzzles via calendar. Collect themed issue packs. Track progress with achievement breakdowns. Includes new puzzle types regularly.

How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.