Recall Calculator vs HapLab

Recall Calculator is a customizable calculator designed for everyday use, combining calculation history with visual personalization. Unlike standard calculators, Recall Calculator lets you review past calculations and customize the look and feel of the keypad to suit your preferences. You can choose different button shapes and color themes, making the calculator easier and more comfortable to use over time. The app is built to stay lightweight and focused — no accounts, no data collection, and no unnecessary features. Subtle haptic feedback provides a responsive feel while keeping the interface clean and distraction-free. Recall Calculator is ideal for users who want more control over how their calculator looks and behaves, while still remaining fast and reliable for daily calculations. Features: Standard calculator for everyday arithmetic Full calculation history with recall Customizable button shapes Customizable color themes Haptic feedback for key presses Clean, modern interface No accounts or data collection Lightweight and fast

Feel your way to the answer. HapLab is a haptics laboratory for iPhone: try the full vocabulary of the Core Haptics engine, combine it freely, and save what feels right. A design tool for people who build apps — and a playground for anyone who loves a good click. ■ PAD — touch and play - Perform intensity and sharpness in real time on an XY surface - Three modes: TAP (one hit), STREAM (sustained), BURST (repeats at 2–40 Hz) - Light and vibration follow your finger while you touch ■ DICT — a dictionary of touch - 44 samples that move one parameter at a time: intensity, sharpness, texture, envelopes, curves, rhythm - Compare with the built-in iOS feedback (Impact / Selection / Notification) - A/B the same haptic with and without sound ■ COMP — compose vibrations - Place transients, sustains and synth sounds on a timeline - Carve intensity, sharpness and envelopes (attack / decay / release) with sliders - Modulate over time with intensity and sharpness curves, then loop and listen ■ LIB — remix the presets - 12 presets: heartbeat, raindrops, engine, glass, alarm and more - Open one, tweak it, save it as your own (free plan saves up to 3) ■ Light and sound as controls - Toggle screen flash, glow, particles, torch (real LED) and synth sounds one by one - Decompose what "feels good" into its parts ■ HapLab Pro (one-time purchase) - Unlimited pattern saves - JSON export — take the numbers you found into your own apps - JSON import — play and remix shared patterns ■ Privacy - No data collection. No ads. Your patterns stay on your device. Haptic playback requires an iPhone with a Taptic Engine. The simulator and some older models cannot play haptics.