乃君 黄

Utilities is the main category at about 40.6% of apps, while the portfolio spans 8 categories. This is a relatively diversified portfolio strategy.

Utilities

13 apps · 40.6%

Entertainment

7 apps · 21.9%

Games

4 apps · 12.5%

Education

3 apps · 9.4%

Music

2 apps · 6.3%

• The primary category Utilities accounts for 40.6%. Long-tail categories can reduce single-category risk.
• The diversification score is about 0.76 (0=highly concentrated, 1=highly diversified), useful for comparing developers.

The full portfolio has about 5.5K public ratings, a small public review base. It includes 32 free apps and 0 paid apps.

Apps

32

Total ratings

5.5K

Free / paid

32 / 0

• By review volume, the leading apps include: "Wooden Fish", "Simple Clock - Study With Me", "Random Balls - Shake Them!".
• The visible list is free or priced at 0. Monetization may rely on subscriptions, ads, or in-app purchases; verify on the store page.

Weighted by rating volume, the portfolio averages about 4.74 stars; the simple average is 4.50 stars. The gap shows whether high-volume apps lift or drag the overall reputation.

Weighted avg

4.74 ★

Simple avg

4.50 ★

• The weighted and simple averages differ meaningfully, indicating that high-review apps strongly shape perception.
• 4 apps have no public rating data, so long-tail performance is underrepresented.

The iTunes Search API does not provide review text. This card uses low star ratings with enough review volume as a proxy, and separately highlights apps with thin samples.

• No app triggered the low-rating plus sufficient-sample threshold.
• Thin rating samples (under 50 ratings): "Shoot Stack : Fire!", "Arrow Cube", "Pellet Drum". Star ratings can swing heavily until more feedback arrives.

The earliest listed app is "Galton Board - Bean Machine", while the newest or most recent listing signal is "Multi Counters : Tally & Stats". The span is a proxy for long-term iteration capacity.

Span

7 years+

• Earliest record in this dataset: 2018 (Galton Board - Bean Machine).
• Newer app signal: 2026 (Multi Counters : Tally & Stats).

These takeaways are based on public metadata and are useful for competitor research or portfolio planning. Deeper conclusions require downloads, revenue, and review text.

• Study the category mix: 8 categories show whether a main-category plus extension structure matches your resources.
• Compare reputation structure: weighted 4.74 stars vs. the leading app "Wooden Fish" and its review volume.
• For similar tools, prioritize review mining on lower-rated apps to find functional gaps; this requires store reviews or third-party data.