Apps Like SpeedSpin for iPhone and iPad
Ranked alternatives
Showing 201–220 of 1,000 ranked alternatives.
Chain & Sprocket Calculator
Vladislav Zhirnov
Calculate and ratios
Calculate gear ratios and speeds by entering teeth. Determine length and tension. Select sizes and types. Export calculations as PDF or image. Compare setups for efficiency.
Gear Simulation & Calculation
Heng Jia Liang
Simulate gears, calculate ratios, track speed
Calculate ratios, torque, and speed for train systems. Input teeth numbers and speeds to determine outputs. Simulate train operation instantly. Preview system functionality before 3D printing.
Baltic Deco Planner
Eskil Olsen
Plan dives, track gas use, log decompression
Plan and track technical dives with support for open circuit and closed circuit rebreathers. Calculate gas consumption, OTUs, and CNS. Adjust ascent rates, stop intervals, and RMV/MOR per dive. Include altitude, nitrox, and trimix configurations.
WidgetBeats: Music Widget
Niels van Straaten
Connect and control playback
Control playback with play, pause, skip, and rewind functions. Connect to Apple or Spotify accounts. View real-time listening activity with friends. Choose from Basic, Vinyl, or Cassette styles.
Athletica AI Training Plans
Athletica Inc.
Train with AI-powered workouts
Plan weekly schedules by dragging and dropping workouts. Review daily session goals and structure before starting. Track progress with AI-generated insights and adjust based on performance data.
Christmas cards frames
Sergio Musoles Tornador
Create, edit, and share
Create by selecting a photo from the camera or gallery. Choose a frame, adjust its position, rotation, and size. Share the card via social networks or messaging apps.
VeryFitWeather
Shenzhen DO Intelligent Technology Co., Ltd.
Check weather and track forecasts
Check current and 48-hour weather forecasts for any location worldwide. Track temperature, precipitation, wind speed, and humidity. Customize parameters and receive alerts for severe weather conditions.
Interval running: Run tracker
Maxim Kazakov
Customize intervals, track runs, control workouts
Create runs with customizable time, distance, or open intervals. Design HIIT, tempo, fartlek, pyramid, or progression workouts. Track pace, cadence, and heart rate in real time. Save and reuse favorite routines. Syncs with Apple Watch.
CAGR Calculator
Phan Nhat Đang
Calculate with start and end values
Calculate compound annual growth rate by inputting starting value, ending value, and investment period. Perform calculations using the provided formula. Export results for record-keeping.
BabyPulse - Pregnancy+
Shenzhen Plus1Health Technology Co., Ltd
Track baby's growth and health updates
Track pregnancy with an ovulation calculator for planning. Record fetal and maternal heartbeats. Listen to fetal heart sounds. Monitor baby's development through ultrasound images. Set reminders for prenatal checkups.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.