庆鸿 林

Photo & Video is the main category at about 26.7% of apps, while the portfolio spans 7 categories. This is a relatively diversified portfolio strategy.

Photo & Video

4 apps · 26.7%

Utilities

4 apps · 26.7%

Education

2 apps · 13.3%

Finance

2 apps · 13.3%

Reference

1 apps · 6.7%

• The primary category Photo & Video accounts for 26.7%. Long-tail categories can reduce single-category risk.
• The diversification score is about 0.81 (0=highly concentrated, 1=highly diversified), useful for comparing developers.

The full portfolio has about 11 public ratings, a small public review base. It includes 14 free apps and 1 paid apps.

Apps

15

Total ratings

11

Free / paid

14 / 1

• By review volume, the leading apps include: "Eraser - Object Remover", "MarkCam – Watermark Camera", "ID Photo Passport Photo Makers".
• Free apps dominate, which often points to a utility entry point plus subscription or upgrade model.

Weighted by rating volume, the portfolio averages about 4.64 stars; the simple average is 4.88 stars. The gap shows whether high-volume apps lift or drag the overall reputation.

Weighted avg

4.64 ★

Simple avg

4.88 ★

• The weighted and simple averages differ meaningfully, indicating that high-review apps strongly shape perception.
• 11 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): "MarkCam – Watermark Camera", "ID Photo Passport Photo Makers", "Flow Moment". Star ratings can swing heavily until more feedback arrives.

The earliest listed app is "Sound Meter (SPL meter)", while the newest or most recent listing signal is "Date Calculator - Days & Age". The span is a proxy for long-term iteration capacity.

Span

5 years+

• Earliest record in this dataset: 2021 (Sound Meter (SPL meter)).
• Newer app signal: 2026 (Date Calculator - Days & Age).

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: 7 categories show whether a main-category plus extension structure matches your resources.
• Compare reputation structure: weighted 4.64 stars vs. the leading app "Eraser - Object Remover" 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.