Mobile Product Studio
MarcX Studio
Official MarcX Studio site for RooCards, Snap Spell, NumListen, and Auto Ducking: focused mobile apps with simple flows, fast interfaces, and everyday utility.
Official MarcX Studio site
Looking for MarcX or RooCards?
MarcX Studio builds RooCards, Snap Spell, NumListen, and Auto Ducking. RooCards is the loyalty card wallet for store cards, rewards cards, memberships, barcodes, QR codes, Apple Wallet on iPhone, and basic Android saved-card access.
Loyalty card wallet
RooCards
RooCards is the MarcX loyalty card wallet for store cards, rewards cards, memberships, barcodes, and QR codes. Open cards faster from the app, widgets, Spotlight, Apple Wallet on iPhone, or a clean scan-ready display.
Spelling Practice App
Snap Spell
Snap Spell is an iPhone spelling practice app for real school word lists. Scan, import, or type words, hear them aloud, track progress, print PDFs, and back up with iCloud.
English number listening practice
NumListen
Practice hearing English numbers and typing the digits. Train teen vs ty, phone numbers, prices, dates, codes, decimals, and percentages in NumListen.
Mac audio utility
Auto Ducking
Auto Ducking is a Mac microphone volume utility that lowers background audio when your mic becomes active, then restores volume when microphone use ends.
Loyalty card wallet
RooCards
RooCards is the MarcX loyalty card wallet for store cards, rewards cards, memberships, barcodes, and QR codes. Open cards faster from the app, widgets, Spotlight, Apple Wallet on iPhone, or a clean scan-ready display.
- Store loyalty, store, rewards, and membership cards with clean barcode and QR code display.
- Use fast access surfaces including card-grid widgets, scan-ready barcode and QR widgets, Spotlight, and Apple Wallet for eligible cards.
- Add cards by scanning, manual entry, or bulk import from saved screenshots.
Spelling Practice App
Snap Spell
Snap Spell is an iPhone spelling practice app for real school word lists. Scan, import, or type words, hear them aloud, track progress, print PDFs, and back up with iCloud.
- Scan, import, paste, or type school word lists.
- Hear each spelling word during practice.
- Track practice progress on device.
English number listening practice
NumListen
Practice hearing English numbers and typing the digits. Train teen vs ty, phone numbers, prices, dates, codes, decimals, and percentages in NumListen.
- Practice teen vs ty, basic numbers, phone numbers, prices, dates, codes, decimals, and percentages.
- Hear spoken numbers and type digits with format-specific templates.
- Use replay, Show Answer, settings, and lightweight progress tracking.
Mac audio utility
Auto Ducking
Auto Ducking is a Mac microphone volume utility that lowers background audio when your mic becomes active, then restores volume when microphone use ends.
- Lowers Mac system volume when your microphone becomes active.
- Restores the previous volume automatically when microphone use ends.
- Adds presets, app rules, fade timing, hotkeys, and output-device memory.
MarcX Studio
Focused mobile apps
MarcX Studio builds focused mobile products with clear utility, fast interfaces, and privacy-first defaults.
Focused mobile apps
MarcX Studio builds focused mobile products with clear utility, fast interfaces, and privacy-first defaults.
privacy-first
RooCards keeps the card-wallet job lightweight, with no required login before you can start.
feature
Open the right card quickly when you are at checkout, checking in, or showing a membership code.