Mobile Product Studio
MarcX Studio
MarcX Studio is an independent app studio building focused apps for everyday tasks. Each product is designed around one clear job, with a simple and practical experience.
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. Review words aloud, take spelling tests, and track progress free; Pro: Print PDF practice sheets plus separate learner profiles and iCloud Backup for manual restore.
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 microphone volume 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. Review words aloud, take spelling tests, and track progress free; Pro: Print PDF practice sheets plus separate learner profiles and iCloud Backup for manual restore.
- Scan, import, paste, or type school word lists.
- Use Review List for self-marked review.
- Use Take Test for typed spelling checks.
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 microphone volume 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
How we build
Each MarcX app starts with one recurring task and stays focused on making it easier.
One clear job
Each app is built around a task you return to often.
Straightforward to use
The essentials are easy to find, without unnecessary steps.
Stay focused
We keep each product focused instead of trying to do everything.
MarcX Studio
For app support, privacy questions, or product feedback, contact MarcX Studio.