Viktor Gavrilov

Productivity is the main category at about 37.5% of apps, while the portfolio spans 5 categories. This is a relatively diversified portfolio strategy.

Productivity

3 apps · 37.5%

Games

2 apps · 25%

Lifestyle

1 apps · 12.5%

Health & Fitness

1 apps · 12.5%

Entertainment

1 apps · 12.5%

• The primary category Productivity accounts for 37.5%. Long-tail categories can reduce single-category risk.
• The diversification score is about 0.75 (0=highly concentrated, 1=highly diversified), useful for comparing developers.

The full portfolio has about 397 public ratings, a small public review base. It includes 3 free apps and 5 paid apps.

Apps

8

Total ratings

397

Free / paid

3 / 5

• By review volume, the leading apps include: "Mark Off: Calendar & Tracker", "1440: countdown timer", "Beader".
• Paid apps represent a larger share, making download conversion and reputation more important.

Weighted by rating volume, the portfolio averages about 4.58 stars; the simple average is 4.69 stars. The gap shows whether high-volume apps lift or drag the overall reputation.

Weighted avg

4.58 ★

Simple avg

4.69 ★

• The weighted and simple averages are close, suggesting reputation is relatively balanced across apps.
• 2 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): "Is it Sunday?", "123: numbers animated widget", "Activity Map". Star ratings can swing heavily until more feedback arrives.

The earliest listed app is "1440: countdown timer", while the newest or most recent listing signal is "Is it Sunday?". The span is a proxy for long-term iteration capacity.

Span

4 years+

• Earliest record in this dataset: 2017 (1440: countdown timer).
• Newer app signal: 2021 (Is it Sunday?).

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: 5 categories show whether a main-category plus extension structure matches your resources.
• Compare reputation structure: weighted 4.58 stars vs. the leading app "Mark Off: Calendar & Tracker" 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.