Stefan Keller
Known for
Export Contacts Pro: CSV Excel
Export Contacts Pro: CSV Excel
Snapshot
Rivals analysis in progress
Portfolio
Free 11
app
Productivity1
Last updated
Export Contacts Pro: CSV Excel
v3.0
2mo ago
Publisher DNA
What defines Stefan Keller?
AI intelligence is not yet available for Stefan Keller. The portfolio data below is up to date.
Portfolio
What does Stefan Keller ship?
Apps
1 app analysed
Field-level selection enables precise data portability for professional address books
- High-speed contact processing allows users to export thousands of entries in under one minute
- Users report: Deceptive pricing disclosures lead users to feel misled about the total cost of export features
Distributed across 10 markets, strongest in Europe.
Based on 1 of 1 app with localized market data · last scanned .
Americas (3)
- Brazil1 / 1
- Mexico1 / 1
- United States1 / 1
Europe (5)
- France1 / 1
- Germany1 / 1
- Italy1 / 1
- Portugal1 / 1
- Spain1 / 1
Asia-Pacific (2)
- Japan1 / 1
- South Korea1 / 1
Core markets (1/1 apps)
BrazilFranceGermanyItalyJapanMexicoPortugalSouth KoreaSpainUnited 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 Stefan Keller publish?
Stefan Keller has 1 app tracked by Marlvel, primarily in the Productivity category.
What kind of apps does Stefan Keller make?
Stefan Keller's portfolio is concentrated in Productivity, with an average rating of 4.3/5 across rated apps.
What is Stefan Keller's top app?
By review volume across the portfolio, Export Contacts Pro: CSV Excel is Stefan Keller's best-known app tracked by Marlvel.
In how many countries are Stefan Keller's apps available?
Marlvel has tracked Stefan Keller's apps across 10 countries.
