SQL Primer icon

Dr. Ralph Heider

Known forSQL Primer
1app3.2(20)Education

Publisher DNA

What defines Dr. Ralph Heider?

AI intelligence is not yet available for Dr. Ralph Heider. The portfolio data below is up to date.

Portfolio

What does Dr. Ralph Heider ship?

Apps

1 app analysed

Visual aids for complex topics like outer joins provide clarity for students in classroom settings

  • Simple and focused presentation of SQL syntax examples makes learning basic concepts accessible for beginners
  • Limited content depth fails to provide value for users who already possess professional SQL experience

Tightly focused on 2 markets (Germany, United States).

Based on 1 of 1 app with localized market data Β· last scanned .

Americas (1)

  • United States1 / 1

Europe (1)

  • Germany1 / 1

Core markets (1/1 apps)

GermanyUnited States

User Sentiment

How do users feel about their apps?

1

Positive apps

0

Neutral / mixed

0

Negative apps

65/100

Avg sentiment score

Frequently asked questions

How many apps does Dr. Ralph Heider publish?
Dr. Ralph Heider has 1 app tracked by Marlvel, primarily in the Education category.
What kind of apps does Dr. Ralph Heider make?
Dr. Ralph Heider's portfolio is concentrated in Education, with an average rating of 3.2/5 across rated apps.
What is Dr. Ralph Heider's top app?
By review volume across the portfolio, SQL Primer is Dr. Ralph Heider's best-known app tracked by Marlvel.
In how many countries are Dr. Ralph Heider's apps available?
Marlvel has tracked Dr. Ralph Heider's apps across 2 countries.

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Dr. Ralph Heider, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. β€œDr. Ralph Heider intelligence.” Updated N/A. https://marlvel.ai/publishers/dr-ralph-heider

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Data licensed under CC-BY-NC 4.0