---
title: "David Zemsky — Publisher Overview"
type: publisher
publisher: "David Zemsky"
publisher_slug: "david-zemsky"
canonical_url: "https://marlvel.ai/publishers/david-zemsky"
last_updated: 2026-05-08T17:50:50.250Z
source: Marlvel.ai
license: CC-BY-NC-4.0
citation: "Marlvel.ai — David Zemsky Publisher Overview"
---
## ⚠ Content Warning

This publisher's portfolio includes apps classified as sensitive (health). Information is aggregated from public sources for informational purposes only. This overview touches health-related apps. It is not medical advice.

---

# David Zemsky — Publisher Overview

> Providing specialized health tracking and business utility tools for mobile users. Focused on data-driven management for personal health and professional workflows.

- **Publisher:** David Zemsky
- **Website:** [https://sheetmusicscanner.com](https://sheetmusicscanner.com)
- **Headquarters:** Hong Kong
- **Founded:** 2010
- **Overview generated:** 2026-05-08
- **License:** CC-BY-NC 4.0

## Executive summary

The publisher maintains a bifurcated strategy, balancing high-volume consumer health tracking with niche B2B utilities for the Stripe ecosystem. Their moat is built on functional simplicity, prioritizing direct data portability—such as CSV/Excel exports and Stripe Connect integration—over complex feature sets. A critical strategic tension exists between their stable, long-standing medical apps and their business tools, where recent technical performance issues in ID verification threaten to undermine their professional credibility.

## Publisher DNA

- **Primary focus:** Medical health tracking and B2B business utilities
- **Scale:** indie
- **Target audience:** Individuals managing chronic health conditions and small business owners or freelancers requiring lightweight, mobile-first administrative tools.
- **Origin:** Founded in 2010 by a group of industry professionals with experience in large-scale systems development.

## Portfolio momentum

- **Velocity:** intense
- **Active apps:** 3
- **Abandoned apps:** 3
- **Last major release:** 22 days ago

Released 17 updates across the portfolio in the last 6 months, indicating high development activity despite a mix of active and legacy titles.

## Aggregated portfolio metrics

- **Total reviews (all apps):** 62,312
- **Weighted rating:** 4.60 / 5
- **Apps in portfolio:** 6

## Category breakdown

| Category | Apps | Share |
| :--- | :--- | :--- |
| Business | 3 | 50% |
| Medical | 2 | 33.3% |
| Music | 1 | 16.7% |

## Top apps

- **Glucose | Blood Sugar Tracker** — Largest app by reach with over 28,000 ratings.
- **Blood Pressure Tracker •** — Core medical utility with over 26,000 ratings.
- **Sheet Music Scanner** — Primary non-medical utility with over 6,000 ratings.
- **ID Scanner •** — Specialized business tool for venue management.
- **Invoice for Stripe** — B2B utility leveraging Stripe Connect integration.

## Signature patterns

- Freemium monetization model across both medical and business categories
- Strong emphasis on data portability and reporting (CSV, Excel, PDF exports)
- Utility-first design focusing on specific, singular workflows
- Integration with third-party ecosystems like Stripe for business tools

## Bottom line

The publisher is a specialized indie developer with a proven ability to capture niche markets in health and B2B utilities. Success depends on their ability to maintain high-trust medical apps while resolving technical stability issues in their professional toolset.

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© 2026 Marlvel.ai | [Publisher apps index](https://marlvel.ai/api/llm/publishers/david-zemsky) | [Methodology](https://marlvel.ai/api/llm/methodology)
Data licensed under CC-BY-NC 4.0.

---
© 2026 Marlvel.ai | [Full publisher profile](https://marlvel.ai/publishers/david-zemsky) | [Publisher apps index](https://marlvel.ai/api/llm/publishers/david-zemsky) | [Methodology](https://marlvel.ai/api/llm/methodology)
Data licensed under CC-BY-NC 4.0.