---
source: marlvel.ai
type: app_intelligence_section
content_version: "v2"
section_slug: "sentiment"
section_label: "User Sentiment"
section_anchor: "#user-sentiment"
app_name: "Concentration training."
bundle_id: "com.nixgames.ConcentrationTraining"
parent_report: "https://marlvel.ai/api/llm/apps/productivity/concentration-training"
canonical_url: "https://marlvel.ai/apps/concentration-training#user-sentiment"
report_date: "2026-09-13"
license: CC-BY-NC-4.0
citation: "Marlvel.ai - Concentration training. User Sentiment (section of intelligence report)"
---

## 🟢 User Sentiment (High Confidence: 60 of 60 reviews analyzed) {#user-sentiment}
- **Overall Rating:** 4.73/5
- **Platform Split:** iOS 4.8/5 (42 ratings) | Android 4.7/5 (15.2K ratings)
- **Overall Sentiment:** Thrilled

### Top Praises
- **Concentration training exercises provide measurable cognitive improvements for users who practice on a daily basis**
- **Clean and minimalist interface design allows users to focus entirely on the challenging cognitive tasks**
- **Ad-free experience in the current version preserves the integrity of the brain training environment**

### Top Complaints (Impact Areas)

- **Lack of dark mode support forces users to strain their eyes during late-night training sessions**

<!-- /section:sentiment -->
<!-- section:swot -->