MobiSystems, Inc.

Reference is the main category at about 65.4% of apps, while the portfolio spans 4 categories. This is a moderately concentrated portfolio strategy.

Reference

17 apps · 65.4%

Business

4 apps · 15.4%

Productivity

3 apps · 11.5%

Medical

2 apps · 7.7%

• The primary category Reference accounts for 65.4%. Long-tail categories can reduce single-category risk.
• The diversification score is about 0.53 (0=highly concentrated, 1=highly diversified), useful for comparing developers.

The full portfolio has about 98.5K public ratings, a mid-sized public review base. It includes 11 free apps and 15 paid apps.

Apps

26

Total ratings

98.5K

Free / paid

11 / 15

• By review volume, the leading apps include: "MobiOffice・Word Docs・Excel・PDF", "Oxford Dictionary & Thesaurus", "Talk & Translate AI Translator".
• Paid apps represent a larger share, making download conversion and reputation more important.

Weighted by rating volume, the portfolio averages about 4.66 stars; the simple average is 4.50 stars. The gap shows whether high-volume apps lift or drag the overall reputation.

Weighted avg

4.66 ★

Simple avg

4.50 ★

• The weighted and simple averages differ meaningfully, indicating that high-review apps strongly shape perception.
• 3 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): "Collins Malay Dictionary", "Collins Italian Dictionary", "MobiScan: OCR Scanner・Scan PDF". Star ratings can swing heavily until more feedback arrives.

The earliest listed app is "Collins Spanish Dictionary", while the newest or most recent listing signal is "MobiScan: OCR Scanner・Scan PDF". The span is a proxy for long-term iteration capacity.

Span

16 years+

• Earliest record in this dataset: 2009 (Collins Spanish Dictionary).
• Newer app signal: 2024 (MobiScan: OCR Scanner・Scan PDF).

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: 4 categories show whether a main-category plus extension structure matches your resources.
• Compare reputation structure: weighted 4.66 stars vs. the leading app "MobiOffice・Word Docs・Excel・PDF" 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.