Report updated May 19, 2026
Cuspart: Kâr/Zarar
For e-commerce sellers on platforms like Trendyol, Hepsiburada, Amazon, and Etsy.
Cuspart: Kâr/Zarar is a well-regarded business app that is completely free. With a 4.8/5 rating from 820.5K reviews, it maintains solid user satisfaction. Users particularly appreciate simplicity of profit-tracking interface, though manual data entry friction remains a common concern.
What is Cuspart: Kâr/Zarar?
Cuspart is a profit and loss calculation tool for e-commerce sellers, available as a free utility on Android.
Users hire Cuspart to replace manual Excel accounting with an automated, privacy-focused margin calculator that accounts for marketplace-specific commissions and shipping costs.
Current Momentum
v1.33 · 4d ago
Maintenance- Maintains 4.81 rating on Android.
- Ships regular stability updates.
Active Nemesis
Splid – Split group bills
By Nicolas Jersch
Other Rivals
7-Day Rank Pulse 🇺🇸
BusinessNo ranking data
Rating Pulse 🇺🇸
Recent User MoodAI-powered deep analysis surfacing high-signal insights. Still in beta, accuracy improves daily. For informational purposes only.
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
Loading...
What Are The Key Features?
Financial data is stored exclusively on the device.
Automated calculation of profit after commissions and costs.
Export reports in PDF or CSV format.
How much does it cost?
- Free access to all features
The app operates as a free tool with no visible subscription gates, focusing on user acquisition.
Who Built It?
Mustafa Tolga DALBUDAK
Providing specialized utility and productivity tools for professionals and students. Focused on offline-first functionality for everyday tasks.
Portfolio
13
Apps
Who is Mustafa Tolga DALBUDAK?
Cuspart operates as a high-volume utility studio that prioritizes offline accessibility and niche-specific toolsets over platform-wide ecosystem integration. By targeting fragmented segments like e-commerce accounting and specialized engineering conversions, they capture users who require reliable, standalone tools without the overhead of cloud-based dependencies. Their strategy relies on a broad, horizontal portfolio that functions as a utility layer, though the lack of cross-app synchronization or unified user accounts limits their ability to build a cohesive brand ecosystem.
Who is Mustafa Tolga DALBUDAK for?
- Students
- Independent e-commerce sellers
- Professionals seeking offline-capable tools for daily calculations
- Conversions
Portfolio momentum
Released 25 updates across the portfolio in the last 6 months, demonstrating a high-frequency development cycle across their active app base.
What other apps does Mustafa Tolga DALBUDAK make?
What do users think recently?
High confidence · Latest 100 of 820.5K total reviews analyzed
What is the recent mood?
Recent user voice shows a excited sentiment. Users appreciate simplicity of profit-tracking interface, but report manual data entry friction.
What Users Love
What Frustrates Users
What Users Want
What is the competitive landscape for Cuspart: Kâr/Zarar?
How's The Business Market?
**Pricing Strategy**: Free access to all features, prioritizing user acquisition and market penetration over immediate monetization. **Target Audience**: Small-to-medium e-commerce sellers operating on platforms like Trendyol, Hepsiburada, and Etsy.
How does it evolve in the Business market?
Cuspart maintains a high 4.81 rating on Android with over 820,000 reviews, signaling strong product-market fit for individual sellers despite the lack of iOS presence.
| Country | Category | Chart | Rank | Change |
|---|---|---|---|---|
| 🇩🇿 Algeria | Shopping | AndroidFree | #30 | ▼2 |
| 🇨🇦 Canada | Shopping | AndroidFree | #45 | ▼5 |
The rivals identified
The Nemesis
Head to Head
Cuspart should double down on its e-commerce niche; it cannot win on general expense splitting, so it must emphasize its superior business-specific ROI calculations.
What sets Cuspart: Kâr/Zarar apart
Cuspart provides specialized e-commerce profit calculation, whereas Splid is limited to generic expense splitting.
Cuspart integrates specific e-commerce cost variables like commission and shipping, which Splid lacks entirely.
What's Splid – Split group bills's Edge
Splid possesses a massive, established user base with over 82,000 reviews, indicating high market trust.
Splid offers a more mature, polished UI optimized for group social settings rather than individual business accounting.
Contenders
Automates complex severance pay calculations, providing a highly specific utility that Cuspart does not currently address.
Integrates specialized financial input fields tailored specifically for labor law compliance and employee compensation modeling.
Features a granular payment adjustment function that allows for uneven split calculations between group members.
Includes a selective member payment feature, enabling users to exclude specific individuals from certain shared costs.
Finance Calculator Europe
0Jd App Zone
This app competes for the attention of users looking for reliable, multi-purpose financial calculation tools.
Offers localized tax planning tools specifically designed for European financial regulations, creating a strong regional competitive advantage.
Features detailed amortization schedules that provide users with long-term visibility into their loan and debt obligations.
Financial Calculator EMI
0Jaydip Jethva
It serves as a broad-spectrum financial utility that overlaps with Cuspart's goal of simplifying complex math for users.
Provides dedicated mortgage and loan amortization calculators that offer deeper debt-management insights than Cuspart's current toolset.
Includes comprehensive investment planning modules that cater to long-term wealth management rather than short-term e-commerce profit.
Peers
Focuses on subscription sharing and management, solving a specific pain point regarding recurring digital service costs.
Provides access to discounted gift cards, creating a unique value-add that incentivizes daily app engagement.
Enables direct retail treasury bond investments, offering a sophisticated financial product beyond simple profit/loss calculation tools.
Supports cardless withdrawal functionality, providing a physical-world utility that bridges the gap between digital and cash.
Features a '360° Dashboard' that aggregates all financial data, providing a holistic view superior to standalone calculators.
Includes a proprietary 'Aqsat' installment program, directly addressing the financing needs of retail and business customers.
Provides an integrated e-market shopping experience, allowing users to purchase goods directly within the banking ecosystem.
Offers instant personal financing options, creating a high-barrier financial service that pure calculation apps cannot replicate.
New Kids on the Block
Utilizes a state-specific rules engine to provide accurate, localized financial eligibility screening for government aid programs.
Share Market Calculator
0Jaydip Jethva
This newcomer targets the same analytical user base looking for specialized calculators for their financial activities.
Offers specialized trading and options calculators that provide technical analysis tools for active stock market participants.
The outtake for Cuspart: Kâr/Zarar
Strengths to defend, gaps to attack
Core Strengths
- Local-only storage ensures data sovereignty for privacy-conscious business owners.
- Specialized e-commerce cost-variable inputs outperform generic financial calculators.
Critical Frictions
- Manual data entry creates friction for high-volume sellers.
- Lack of cloud-sync prevents multi-device management.
Growth Levers
- API integrations with marketplaces could automate cost-tracking.
- Tablet-specific UI could capture on-the-go inventory management.
Market Threats
- Established financial suites adding e-commerce modules threaten standalone calculators.
- Manual entry fatigue drives users toward automated accounting platforms.
What are the next best moves?
Pivot manual entry to automated platform API imports because users report high friction in manual data entry → increase retention of high-volume sellers.
Top user request is for automated cost-tracking to replace manual inputs.
Trade-off: Pause the UI redesign sprint — API automation has higher retention impact than visual polish.
Invest in cloud-sync optionality because multi-device access is the top request for scaling businesses → unlock professional user segment.
Lack of cloud-sync prevents multi-device management for scaling sellers.
Trade-off: Deprioritize the PDF export formatting update — cloud-sync is a higher-value utility for professional users.
A counter-intuitive read
The privacy-first local storage model is a liability for scaling, as professional sellers prioritize cross-device inventory management over the theoretical security of offline-only data.
Feature Gaps vs Competitors
- Real-time group synchronization (available in Splid but absent here)
- Multi-currency conversion tools (available in Splid but absent here)
Key Takeaways
Cuspart wins on privacy and specialized e-commerce math, but the manual entry requirement limits its scalability for professional sellers, so the PM should prioritize marketplace API integrations to reduce user friction.
Where Is It Heading?
Stable
The e-commerce utility market is shifting toward automated, platform-integrated accounting, leaving standalone calculators exposed. Cuspart must transition from a manual tool to an integrated service to maintain its lead against automated competitors.
High rating consistency on Android indicates the core profit-calculation utility remains highly valued by the target user base.
Manual entry friction in the latest version creates a churn risk as sellers scale their operations beyond simple manual tracking.