StimuliApp vs BatchOptimize

StimuliApp is an app designed to create psychophysical tests with precise timing on iOS devices (iPad and iPhone). Psychophysical tests are tests to assess perceptual capabilities. With a simple system of menus, different types of tests including the most common stimuli (gabors, random dots, images, sounds and videos among others) can be created. Programming skills are not necessary. Features: - Precise timing (frames are not dropped) thanks to the use of the native framework Metal, which provides a direct access to the GPU of the iOS device. - Option to run tests at 60 or 120 Hz depending on the model of the device. - Visual and auditory stimulation are synchronized. - Interactive creation of stimuli using real-time preview. - Possibility of using different spatial and time units. - Gamma-correction features. - Automatic report generation.

BatchOptimize is the ultimate high-performance media and document compression powerhouse engineered exclusively for macOS, iOS, and iPadOS. Built from the ground up for Apple Silicon with Metal, VideoToolbox, and CoreGraphics hardware acceleration, BatchOptimize lets you crush massive file sizes by up to 90% while preserving crisp pixel fidelity. KEY CAPABILITIES: • IMAGES & GRAPHICS: • Next-Gen Formats: Convert & compress to WebP, AVIF, HEIC, JPEG, PNG, and TIFF. • Text Watermarking: Add customizable copyright overlays with position and opacity controls. • Vector Minification: Clean and strip redundant SVG code tables and metadata. • Smart Scaling: Resize to exact bounding boxes or percentage steps. • Lossless Master: 100% bit-perfect stream cleanup with zero pixel degradation. • VIDEOS & CLIPS: • Multi-Codec: Transcode between MP4 (H.264 & HEVC/H.265), Apple ProRes MOV, WebM, and GIF. • Animated GIF & WebP: Convert video clips into smooth looping animations for Discord and web. • Audio Extraction: Demux soundtracks directly to standalone MP3, M4A, FLAC, or WAV. • Target Size Caps: Constrain video exports to strict limits (Under 25 MB Discord, Under 10 MB WhatsApp). • Fast Web Start: Place MP4 MOOV atom at start for instant online streaming. • Audio Muting: Strip unwanted audio tracks to reduce clip sizes. • PDF DOCUMENTS: • Resolution Downsampling: Choose between 72 DPI (Web), 150 DPI (Email), or 300 DPI (Print). • Merge Images to PDF: Combine photos, receipts, or scans into a single compressed PDF booklet. • Page Rotation & Alignment: Rotate pages (90° CW, 180°, 90° CCW) or auto-align (Force Portrait/Landscape). • Image Compression Levels: Choose High Quality (85%), Compact (65%), Max (45%), or Lossless (100%). • Watermark Stamps: Apply copyright and security stamps across 5 positions. • Fast Web View: Linearize PDF document structure for instant browser streaming. • Privacy Sanitization: Strip author names, editing software, and hardware serials. • AUDIO TRACKS: • Multi-Format Transcoder: Reduce bitrates for MP3 (LAME Engine), M4A (AAC with Cover Art), FLAC, and WAV. • Loudness Normalization: Standardize volume to Podcast Speech (-16 LUFS) or Music (-14 LUFS). • Smooth Fades: Apply 1s to 5s volume fade-in and fade-out to prevent clicks. • Pitch-Preserved Speed: Change playback speed (0.8x to 2.0x) with zero pitch distortion. • Channel Mixing: Convert stereo audio to mono for an instant 50% size reduction. • PRODUCTION & AUTOMATION: • Apple Shortcuts & Siri: Native AppIntents to automate bulk optimization, format conversion, and image-to-PDF merging via voice or Finder Quick Actions. • Direct Drag-Out: Drag completed files directly into Finder, Slack, Discord, Mail, Figma, or Photoshop. • Clipboard Quick Optimizer (Cmd+Shift+V): Instant 1-click import and compression for copied screenshots. • Visual Diff & Loupe: Inspect before-and-after image and PDF results side-by-side at 120 FPS. • CSV Summary Reports: Export detailed spreadsheets with byte savings and compression ratios for Excel & Numbers. • 72 Tailored Presets & iCloud Sync: One-click optimization for Shopify, Instagram, Discord, Email, and Podcasts. Custom presets sync automatically across your Mac, iPhone, and iPad via iCloud. • 100% Offline & Private: No cloud uploads, no server delays, and zero data collection.