--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Poolistry: Pool Calculator" developer_entity: "Yonah Systems" bundle_id: "com.poolistry" app_store_id: "6748267875" category: "Utilities" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-07-26" report_date: "2026-09-05" last_verified: "2026-09-05T00:00:00.000Z" report_version: "1.8.1" total_reviews: 25 overall_rating: 4.9 sentiment: "Excited" sentiment_score: 70 confidence: "medium" confidence_score: 0.4 top_praise_theme: "The simple interface allows users to complete their primary tasks without unnecessary friction or complexity" top_complaint_theme: "Lifetime pricing feels excessive relative to the current feature set and overall utility provided" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 33 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["utilities", "freemium", "excited sentiment", "mobile app", "app review", "app analysis", "backyard", "owners", "professional"] canonical_url: "https://marlvel.ai/apps/poolistry-pool-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Poolistry: Pool Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Freemium - **Signal**: Rating 4.88 · Sentiment Excited - **Recent focus**: Lifetime pricing feels excessive relative to the current feature set and overall utility provided (top complaint) · The simple interface allows users to complete their primary tasks without unnecessary friction or complexity (top praise) > **TL;DR:** Poolistry: Pool Calculator is a utilities app by Yonah Systems, rated 4.88/5 by 25 users, with Excited user sentiment (70/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Poolistry: Pool Calculator maintains Excited user sentiment (4.88/5 from 25 reviews), with users consistently praising the simple interface allows users to complete their primary tasks without unnecessary friction or complexity. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.88/5 (25 reviews) | | **User Mood** | Excited | | **Category** | Utilities | | **Developer** | Yonah Systems | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.4/1.0) | | **Data Age** | 33d | ## Metadata & Market Performance - **Publisher:** Yonah Systems - **Category:** Utilities - **Target Audience:** Backyard pool owners and professional pool service providers requiring precise chemical dosing and maintenance tracking. - **Platforms:** iOS & Android - **Version Reviewed:** 1.8.1 - **Report Date:** 2026-09-05 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.4/1.0) - **App Store ID (iOS):** 6748267875 - **Bundle ID:** com.poolistry - **Google Play ID:** com.poolistry - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-09-05 ## Executive Snapshot **What it is:** Poolistry is a pool maintenance and chemistry calculator for iOS and Android that tracks water test history and chemical adjustments. **Why users hire it:** Poolistry removes the cognitive load of manual chemical calculations, replacing fragmented paper logs with a synchronized digital timeline. ## App DNA (Features & Intent) - **[Standard] Smart Pool Calculators:** Calculates precise chemical dosages for pH, chlorine, alkalinity, and CSI, serving as the primary retention loop. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Differentiator] Cloud Sync & Backup:** Synchronizes pool logs across devices, acting as a B2B unlock for professional service providers. * *User Intent:* Users expect seamless access across multiple devices. ## Market Position {#market-position} Poolistry operates in the Utilities category with a 4.88-star rating on iOS across 25 ratings. The lack of Android engagement (zero ratings) signals a significant discovery gap on the Play Store compared to the iOS base. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with ads, Premium tier (Cloud sync, multiple pools, ad-free) - **Analysis:** The freemium model gates advanced utility features behind a subscription, though reviewers report the lifetime cost feels excessive. ## 🟢 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 4.88/5 - **Platform Split:** iOS 4.9/5 (25 ratings) - **Overall Sentiment:** Excited ### Top Praises - **The simple interface allows users to complete their primary tasks without unnecessary friction or complexity** ### Top Complaints (Impact Areas) - **Lifetime pricing feels excessive relative to the current feature set and overall utility provided** ## SWOT Analysis {#swot} **Core Strengths:** - Cloud-sync architecture enables multi-device data consistency for professional service routes - CSI-based chemical balancing provides a technical differentiator for managing corrosive or scaling water conditions **Growth Levers:** - Professional-grade route management features could capture market share from manual logbook users ## Recent Changes (v2 → v3) {#recent-changes} The developer has pivoted its monetization strategy to address high churn and identified a critical discovery failure on the Android platform. These changes mark a shift from passive maintenance to active funnel optimization. **Overall trend**: Mixed **Compared at**: 2026-09-05 ### High-impact changes - **[Shifted] Pricing Model Pivot** (pricing) - **[Shifted] Android Discovery Gap Identified** (audience) ### Medium-impact changes - **[Added] New Competitive Threat** (swot) ## What's New - **Latest (v1.8.1, 1 months ago):** Timeline entries now display CSI values, including balanced, scaling, and corrosive status indicators. ## App Momentum (Maintenance) {#momentum} - Shipped CSI tracking in latest release. - Ships bug fixes at 6-week cadence. > **Cadence:** 1 total versions · 1 majors in last 6 months · 41 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Poolistry: Pool Calculator is an utilities app that is free with in-app purchases. It holds a 4.88/5 rating from 25 reviews. > **Bottom Line:** Restructuring the pricing model to better align with the current feature set would address the primary friction point driving negative sentiment. Aligning the cost with the perceived value will unlock higher conversion rates among casual pool owners. **Best for:** Backyard pool owners and professional pool service providers requiring precise chemical dosing and maintenance tracking. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Pivot lifetime pricing to a feature-gated annual model because users flag the current lifetime cost as excessive → reduce churn. ### Outlook: Stable The pool-utility market is consolidating around apps that provide both calculation and long-term maintenance logging. Poolistry is well-positioned to capture professional users if it can resolve its pricing friction and improve Android discovery. - 🟢 The addition of CSI tracking in the latest release demonstrates a commitment to technical depth that differentiates Poolistry from basic calculators. - 🔴 Consistent user complaints regarding the lifetime pricing tier suggest that the current monetization strategy is creating a barrier to long-term retention. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.88/5 | | Total Reviews | 25 | | Sentiment | Excited (70/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 2 analyzed | | Trend | Mixed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Poolistry: Pool Calculator** (this app) | 4.88/5 | Excited | Yonah Systems | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.8/5 | N/A | Cat Connect | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.6/5 | n/a | techlaim | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Free VPN by Free VPN .org™](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) | 4.5/5 | Mixed | Free VPN LLC | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.5/5 | Mixed | Fuxin Technology | ## Company Profile - **Developer:** Yonah Systems - **Website:** [https://poolistry.com](https://poolistry.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/poolistry-pool-calculator/id6748267875?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.poolistry&hl=en&gl=us) - **Dev Site:** [Official Website](https://poolistry.com) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) · 4.5/5 Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.5/5 Rating - [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) · 4.4/5 Rating - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) · 3.8/5 Rating - [*카톡 분석 - 오픈채팅, 카톡 채팅 분석, 통계, 검색*](https://marlvel.ai/apps/com-liger-katalkanalysispaid) (Park Sung Cheol) · N/A Rating - [*로또 황금번호 생성기*](https://marlvel.ai/apps/lotto-lottogold) (jaehwan lee) · N/A Rating - [*도사폰 (만세력 역학도구)*](https://marlvel.ai/apps/app--656) (Softchaser Company Limited) · 5.0/5 Rating ## Frequently Asked Questions {#faq} ### Is Poolistry suitable for professional pool service providers? Yes, Poolistry includes cloud synchronization and multi-pool management features designed to support professional service routes, though users note that the current feature set is still evolving. ### Does Poolistry offer a free version? Yes, Poolistry offers a free tier that includes the core chemical calculators and maintenance logging, while advanced features like cloud sync and ad removal are gated behind a premium subscription. ### Are there any hidden costs in the premium subscription? Users report that the lifetime pricing tier feels expensive relative to the features provided, so potential subscribers should evaluate the monthly or annual options if available. ## 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:** 0.4/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, 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:** 33 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/poolistry-pool-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.