--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Sales Tax Calculator & Rates" developer_entity: "Hakan Mazlum Uslu" bundle_id: "com.salestax.byhazerfen" app_store_id: "6758596220" category: "Finance" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-03-03" report_date: "2026-09-16" last_verified: "2026-09-16T00:00:00.000Z" report_version: "1.0.1" total_reviews: 0 confidence: "low" confidence_score: 0.2 data_age_days: 14 momentum_velocity: "zombie" intelligence_version: 2 tags: ["finance", "free", "mobile app", "app review", "app analysis", "shoppers", "travelers", "requiring"] canonical_url: "https://marlvel.ai/apps/sales-tax-calculator-rates" license: "CC-BY-NC 4.0" content_version: "v2" --- ## ⚠ Content Warning This report covers topics classified as sensitive (finance). Information is aggregated from public sources for informational purposes only. This is not financial or investment advice. Always do your own research. --- # Sales Tax Calculator & Rates Intelligence Report ## TL;DR {#tldr} - **Category**: Finance · Free > **TL;DR:** Sales Tax Calculator & Rates is a finance app by Hakan Mazlum Uslu, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Sales Tax Calculator & Rates is a finance app by Hakan Mazlum Uslu. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Finance | | **Developer** | Hakan Mazlum Uslu | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 14d | ## Metadata & Market Performance - **Publisher:** Hakan Mazlum Uslu - **Category:** Finance - **Target Audience:** Shoppers and travelers requiring quick tax calculations for international or local purchases. - **Platforms:** iOS - **Version Reviewed:** 1.0.1 - **Report Date:** 2026-09-16 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6758596220 - **Bundle ID:** com.salestax.byhazerfen - **Data Window:** Analysis based on signals collected up to 2026-09-16 ## Executive Snapshot **What it is:** Sales Tax Calculator & Rates is a finance utility for manual tax computation on iOS, designed for shoppers and travelers. **Why users hire it:** The app removes the cognitive friction of manual percentage math during international shopping, serving as a lightweight alternative to complex, location-based finance apps. ## App DNA (Features & Intent) - **[Standard] Sales Tax Calculation:** Calculates total costs including tax with a single tap input. - **[Standard] Global Tax Rate Support:** Provides tax rate calculations for international jurisdictions. * *User Intent:* Users seek enhanced value through premium features. - **[Basic] Minimalist Interface:** Single-screen layout for tax computation. ## Market Position {#market-position} Sales Tax Calculator & Rates occupies the free, manual-utility segment of the Finance category. The lack of updates for 197 days indicates a static market position that risks losing visibility to more frequently updated competitors. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is currently distributed as a free utility with no visible monetization gates or subscription tiers. ## SWOT Analysis {#swot} **Core Strengths:** - Minimalist single-screen layout reduces user friction **Growth Levers:** - Real-time currency conversion integration for travelers ## What's New - **Latest (v1.0.1, 6 months ago):** General performance improvements. ## App Momentum (Zombie) {#momentum} - Ships no new features since March. - Maintains maintenance-only release cadence. > **Cadence:** 1 total versions · 0 majors in last 6 months · 196 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Sales Tax Calculator & Rates is a finance app that is completely free. > **Bottom Line:** Sales Tax Calculator & Rates provides a functional, no-cost utility for manual tax math, but its lack of active development limits its utility against automated, location-aware rivals, signaling a need to pivot toward high-frequency traveler use cases or accept a sunset trajectory. **Best for:** Shoppers and travelers requiring quick tax calculations for international or local purchases. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit user retention because the app has been silent for 6 months → determine if the user base justifies a feature refresh. ### Outlook: Mixed The finance utility market is shifting toward automated, location-aware tax detection, which pressures manual-input tools like Sales Tax Calculator & Rates. Without a clear roadmap for feature expansion, the app will likely remain a static utility that struggles to retain users against more dynamic, automated competitors. - 🔴 The six-month development silence suggests the product is in maintenance mode, which limits its ability to respond to changing tax regulations. - ⚪ The free, minimalist model serves a niche of users who prefer manual control over automated, location-aware finance tools. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Sales Tax Calculator & Rates** (this app) | N/A/5 | N/A | Hakan Mazlum Uslu | | [Polymarket: Trade Live Sports](https://marlvel.ai/apps/polymarket) | 4.5/5 | n/a | Polymarket | | [ATLAS:EARTH - Fun Cashback!](https://marlvel.ai/apps/atlas-earth-fun-cashback) | 4.5/5 | n/a | Atlas Reality, Inc. | | [Banksola: Budget Planner](https://marlvel.ai/apps/banksola-budget-planner) | 4.7/5 | Mixed | Quickdollarapp, Inc | | [Fidelity Investments](https://marlvel.ai/apps/fidelity-investments) | 4.4/5 | n/a | Fidelity Investments | | [Kalshi: Trade Football & more](https://marlvel.ai/apps/kalshi-trade-news-sports) | 4.8/5 | n/a | KalshiEX LLC | ## Company Profile - **Developer:** Hakan Mazlum Uslu - **Website:** [https://salestax.byhazerfen.com](https://salestax.byhazerfen.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/sales-tax-calculator-rates/id6758596220?uo=4) - **Dev Site:** [Official Website](https://salestax.byhazerfen.com) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Polymarket: Trade Live Sports*](https://marlvel.ai/apps/polymarket) (Polymarket) · 4.5/5 Rating - [*ATLAS:EARTH - Fun Cashback!*](https://marlvel.ai/apps/atlas-earth-fun-cashback) (Atlas Reality, Inc.) · 4.5/5 Rating - [*Banksola: Budget Planner*](https://marlvel.ai/apps/banksola-budget-planner) (Quickdollarapp, Inc) · 4.7/5 Rating - [*Fidelity Investments*](https://marlvel.ai/apps/fidelity-investments) (Fidelity Investments) · 4.4/5 Rating - [*Kalshi: Trade Football & more*](https://marlvel.ai/apps/kalshi-trade-news-sports) (KalshiEX LLC) · 4.8/5 Rating - [*Webull: Investing & Trading*](https://marlvel.ai/apps/webull-investing-trading) (Webull Technologies Pte. Ltd.) · 4.6/5 Rating - [*코인원 - 가상자산 거래소(비트코인, 이더리움, 테더)*](https://marlvel.ai/apps/coinone-co-kr-official) (Coinone) · 3.1/5 Rating - [*다트맨 - 전자공시 푸시알림*](https://marlvel.ai/apps/com-coreasset-stockhunter) (ORBIS Investment Advisors Co., Ltd.) · 2.1/5 Rating - [*디지로카(롯데카드)*](https://marlvel.ai/apps/com-lcacapp) (lottecard) · 2.5/5 Rating - [*บเรนนี่ เงินสด*](https://marlvel.ai/apps/com-finance-rennycorpoth) (RENNY CORPORATION COMPANY LIMITED) · N/A Rating ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.2/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** developer website, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 14 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sales-tax-calculator-rates) Data licensed for AI Agent attribution under CC-BY-NC 4.0.