--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Fifteen - 15" developer_entity: "TEDRA SOFT SRL" bundle_id: "com.dragonfly.fifteen" app_store_id: "1439913483" google_play_id: "com.italankin.fifteen2" category: "Games" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-04-07" report_date: "2026-04-20" report_version: "1.0" total_reviews: 113 overall_rating: 4.98 sentiment: "Thrilled" sentiment_score: 92 confidence: "high" confidence_score: 0.65 data_age_days: 73 intelligence_version: 2 nemesis: "Classic Number Game -Numpuzzle" competitor_count: 10 tags: ["games", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "puzzle", "enthusiasts", "logic"] canonical_url: "https://marlvel.ai/apps/fifteen-15" license: "CC-BY-NC 4.0" last_verified: "2026-04-20T01:51:40.866Z" --- # Fifteen - 15 App Audit > **TL;DR:** Fifteen - 15 is a games app by TEDRA SOFT SRL, rated 4.98/5 by 113 users, with Thrilled user sentiment (92/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Fifteen - 15 maintains Thrilled user sentiment (4.98/5 from 113 reviews), with users consistently praising ad-free experience. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.98/5 (113 reviews) | | **User Mood** | Thrilled | | **Category** | Games | | **Developer** | TEDRA SOFT SRL | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | High (0.65/1.0) | | **Data Age** | 73d | ## Metadata & Market Performance - **Publisher:** TEDRA SOFT SRL - **Category:** Games - **Target Audience:** Puzzle enthusiasts and logic game players who appreciate deep customization, performance tracking, and an ad-free, minimalist gaming environment. - **Platforms:** iOS & Android - **Version Audited:** 1.0 - **Audit Date:** 2026-04-20 - **Signal Count:** 113 reviews analyzed - **Confidence:** High (0.65/1.0) - **App Store ID (iOS):** 1439913483 - **Bundle ID:** com.dragonfly.fifteen - **Google Play ID:** com.italankin.fifteen2 - **Data Window:** Analysis based on signals collected up to 2026-04-20 ## Executive Snapshot Fifteen - 15 is a minimalist sliding puzzle game that prioritizes a pure, ad-free experience for logic enthusiasts and speedrunners. It differentiates itself through deep technical customization, including grid sizes up to 10x10 and a scramble editor, positioning it as a high-fidelity utility rather than a casual toy. While the Android version remains actively maintained as of April 2026, the app relies on its non-monetized model to maintain a 'Thrilled' user base in a market dominated by high-velocity, ad-supported competitors. ## App DNA (Features & Intent) - **[Differentiator] Multiple Puzzle Variations:** Offers classic, snake, and spiral puzzle types for varied gameplay - **[Differentiator] Advanced Statistics and Replays:** Tracks solve history and allows users to review their solutions for speedrunning analysis * *User Intent:* Users want visibility into their own performance and progress. - **[Differentiator] Scramble Editor:** Allows users to edit or create custom puzzle scrambles * *User Intent:* Users value self-expression and personalized experiences. - **[Standard] Customizable Difficulty:** Supports board sizes ranging from 3x3 up to 10x10 * *User Intent:* Users value self-expression and personalized experiences. ## Monetization Strategy - **Model:** Free - **Tiers:** Completely free to play with no advertisements - **Analysis:** The app follows a non-monetized, hobbyist-driven model, leveraging the absence of ads as its primary user acquisition and retention lever. ## 🟢 User Sentiment (High Confidence: 113 reviews) {#user-sentiment} - **Overall Rating:** 4.98/5 - **Platform Split:** iOS 3.0/5 (1 ratings) | Android 5.0/5 (112 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **Ad-Free Experience** - **Fluid Controls & Performance** ### Top Complaints (Impact Areas) - **Input & UI Glitches** - **Feature Requests** ## SWOT Analysis **Core Strengths:** - Strictly ad-free model driving high user loyalty - Deep customization (3x3 to 10x10 grids) - Advanced speedrunning tools like Replays and Scramble Editor **Critical Frictions:** - Reported input lag and UI glitches affecting core gameplay - Lack of social or competitive features (leaderboards) - Stale scramble logic for larger grid sizes **Growth Levers:** - Implement global leaderboards to engage the speedrunning community - Introduce 'Zen' branding to compete with modern block-puzzle trends - Add Hint/Undo systems to improve accessibility for casual users **Market Threats:** - High-velocity competitors (Easybrain, Tripledot) with better retention hooks - Shift in user preference toward progression-based puzzles (Roll the Ball) ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Fifteen - 15 vs Classic Number Game -Numpuzzle — Head to Head - **[Classic Number Game -Numpuzzle](https://marlvel.ai/apps/classic-number-game-numpuzzle)** by Mrudul Babariya: The most direct functional rival, offering the exact same sliding-tile core loop but with modern feature parity and higher update velocity. - **Key differences:** - Offers variable grid complexities (3x3 up to 8x8) whereas the target app is limited to the standard 15-tile format. - Includes a 'Challenge Mode' that introduces time limits, shifting the game from a casual toy to a competitive experience. - Provides a 'Hint' and 'Undo' system to assist users, addressing the frustration of getting stuck in the classic 15-puzzle layout. ### Contenders (Strong Challengers) - **[Roll the Ball® - slide puzzle](https://marlvel.ai/apps/roll-the-ball-slide-puzzle)** by BitMango, Inc.: A high-scale alternative that uses the sliding mechanic for pathfinding rather than numerical ordering, capturing the 'spatial logic' audience. - Features a level-based progression system with over 3,000 stages, creating a long-term retention hook missing from the target's single-mode play. - Utilizes a 'Star' rating system based on move efficiency to encourage replayability and mastery. - **[2048](https://marlvel.ai/apps/com-ketchapp-2048)** by Ketchapp: The dominant 'sliding number' peer that replaced the 15-puzzle as the go-to minimalist math game for casual users. - Uses a merging mechanic (2+2=4) which provides a clearer sense of 'score' and progression than simple tile ordering. - Implements a 'Game Over' state when the board fills, creating a tension-release cycle that the target's open-ended puzzle lacks. - **[Flow Free](https://marlvel.ai/apps/flow-free)** by Big Duck Games LLC: A logic-puzzle giant that competes for the same 'minimalist brain teaser' headspace with a high-frequency update cadence. - Uses color-matching logic instead of numbers, making the game more accessible to a global, non-language-specific audience. - Offers 'Daily Puzzles' and 'Time Trial' modes to drive daily active usage (DAU) through fresh content. ### Peers (What They Do Better) - **[Killer Sudoku by Sudoku.com](https://marlvel.ai/apps/killer-sudoku-by-sudoku-com)** by Easybrain Ltd: An adjacent number-logic game that targets the same 'power-user' puzzle demographic. - Combines standard Sudoku with arithmetic 'cages,' requiring mental math skills that the target app does not engage. - Includes seasonal events and collectible trophies to gamify the logic experience. - **[Minesweeper ∙](https://marlvel.ai/apps/minesweeper)** by Optime Software LLC: A classic 'utility-style' puzzle peer that shares the target's retro aesthetic and functional UI. - Focuses on deduction and risk management (flagging mines) rather than spatial rearrangement. - Offers a 'Custom' mode where users can define grid size and mine density, providing higher sandbox value. - **[Nonogram.com - Number Games](https://marlvel.ai/apps/com-easybrain-nonogram)** by Easybrain Ltd: Uses numbers as coordinates for logic-based art creation, offering a more visual reward than the target. - Provides a 'Picture Cross' reward where completing the puzzle reveals a pixel-art image. - Features a 'Lives' system and 'Auto-cross' helper to lower the barrier to entry for beginners. - **[Number Match - Numbers Game](https://marlvel.ai/apps/number-match-numbers-game)** by Easybrain Ltd: A simple pairing game that competes for the 'short-burst' casual session time. - Objective is to clear the board by matching pairs, offering a 'cleaning' satisfaction loop vs. the target's 'ordering' loop. - Uses a 'Boosters' monetization model (Hints, Undos, Adds) that the target app currently lacks. ### New Kids on the Block (What's Innovative) - **[Woodoku - Wood Block Puzzles](https://marlvel.ai/apps/woodoku-wood-block-puzzles)** by Tripledot Studios: A high-velocity threat with 11 updates in the last 6 months, successfully rebranding classic logic as a 'Zen' experience. - **[Blockudoku®: Block Puzzle Game](https://marlvel.ai/apps/blockudoku-block-puzzle-game)** by Easybrain: An emerging leader in the block-logic space with a consistent bi-monthly release cadence. ## What's New {#recent-changes} - **Latest (v1.7.0, 1 weeks ago):** Added a selector for the scramble method. ## The "So What?" (Strategic Takeaway) {#so-what} Fifteen - 15 is a market-leading games app that is completely free. With a 4.98/5 rating from 113 reviews, it delivers strong user satisfaction. > **Bottom Line:** If I were the PM, I would prioritize fixing the input lag to maintain the app's 'gold standard' status for speedrunners while introducing a leaderboard to drive organic competition. The ad-free model is a massive competitive advantage, but technical stability and a lack of social hooks are the primary risks to long-term retention. **Best for:** Puzzle enthusiasts and logic game players who appreciate deep customization, performance tracking, and an ad-free, minimalist gaming environment. ### PM Action Plan (Next Best Moves) - [ ] [HIGH] Resolve input lag and UI responsiveness issues — *Input glitches are a medium-frequency complaint that directly undermines the app's positioning as a high-performance speedrunning tool.* - [ ] [MEDIUM] Implement Global Leaderboards — *This is a top user feature request and a key gap compared to competitors like Roll the Ball and Numpuzzle.* - [ ] [MEDIUM] Update Scramble Algorithms for 5x5+ grids — *Users report identical scrambles on larger grids, which reduces replayability and the value of the 'Multiple Variations' feature.* ### Feature Gaps vs Competitors - Hint and Undo systems (available in Classic Number Game - Numpuzzle) - Level-based progression system (available in Roll the Ball) - Daily Puzzles and Time Trials (available in Flow Free) - Multiplayer Mode (available in Roll the Ball) ### Outlook: Improving - 🟢 v1.7.0 updated April 2026 — indicates active feature investment, not maintenance mode. - 🟢 Thrilled user base regarding ad-free experience — provides a strong moat against commercial rivals. - 🔴 Emerging reports of input lag — a critical risk for a speedrunning-focused app. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.98/5 | | Total Reviews | 113 | | Sentiment | Thrilled (92/100) | | Confidence | High | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 4 analyzed | | Outlook | Improving | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Fifteen - 15** (this app) | 4.98/5 | Thrilled | TEDRA SOFT SRL | | [2048](https://marlvel.ai/apps/com-ketchapp-2048) | 4.6/5 | Mixed | Ketchapp | | [Number Match - Numbers Game](https://marlvel.ai/apps/number-match-numbers-game) | 4.6/5 | Frustrated | Easybrain Ltd | | [Flow Free](https://marlvel.ai/apps/flow-free) | 4.8/5 | Excited | Big Duck Games LLC | | [Woodoku - Wood Block Puzzles](https://marlvel.ai/apps/woodoku-wood-block-puzzles) | 4.7/5 | Frustrated | Tripledot Studios | | [Killer Sudoku by Sudoku.com](https://marlvel.ai/apps/killer-sudoku-by-sudoku-com) | 4.7/5 | Frustrated | Easybrain Ltd | ## Company Profile - **Developer:** TEDRA SOFT SRL ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/fifteen-15/id1439913483?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.italankin.fifteen2&hl=en&gl=us) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*2048*](https://marlvel.ai/apps/com-ketchapp-2048) (Ketchapp) — 4.6/5 Rating | Mixed Sentiment - [*Number Match - Numbers Game*](https://marlvel.ai/apps/number-match-numbers-game) (Easybrain Ltd) — 4.6/5 Rating | Negative Sentiment - [*Flow Free*](https://marlvel.ai/apps/flow-free) (Big Duck Games LLC) — 4.8/5 Rating | Positive Sentiment - [*Woodoku - Wood Block Puzzles*](https://marlvel.ai/apps/woodoku-wood-block-puzzles) (Tripledot Studios) — 4.7/5 Rating | Negative Sentiment - [*Killer Sudoku by Sudoku.com*](https://marlvel.ai/apps/killer-sudoku-by-sudoku-com) (Easybrain Ltd) — 4.7/5 Rating | Negative Sentiment - [*Minesweeper ∙*](https://marlvel.ai/apps/minesweeper) (Optime Software LLC) — 4.7/5 Rating | N/A Sentiment - [*Blockudoku®: Block Puzzle Game*](https://marlvel.ai/apps/blockudoku-block-puzzle-game) (Easybrain) — 4.5/5 Rating | Mixed Sentiment - [*Roll the Ball® - slide puzzle*](https://marlvel.ai/apps/roll-the-ball-slide-puzzle) (BitMango, Inc.) — 4.6/5 Rating | N/A Sentiment - [*Classic Number Game -Numpuzzle*](https://marlvel.ai/apps/classic-number-game-numpuzzle) (Mrudul Babariya) — 4.4/5 Rating | N/A Sentiment - [*Nonogram.com - Number Games*](https://marlvel.ai/apps/com-easybrain-nonogram) (Easybrain Ltd) — 4.6/5 Rating | Negative Sentiment ## Frequently Asked Questions ### Is this the best 15-puzzle app for speedrunning? Yes, users consider it a top choice for speedrunning due to its fluid controls, detailed statistics, and 'Replay' feature which allows you to review your solutions. It also supports custom scrambles, making it a highly flexible tool for competitive play. ### How does this compare to other free sliding puzzles? Unlike many competitors like Numpuzzle, this app is completely ad-free and has no in-app purchases. However, it lacks a 'Hint' or 'Undo' system, which some rivals provide to help users who get stuck. ### Does this app have intrusive ads? No. One of the app's most praised features is its entirely ad-free experience. There are no banners, pop-ups, or in-app purchases, making it a rare minimalist option in the Games category. ### Is there a version of this with levels and progression? This app focuses on a sandbox experience with custom grid sizes. If you prefer a level-based progression system, competitors like 'Roll the Ball' offer over 3,000 stages and a star-rating system for move efficiency. ## Methodology {#methodology} This report was generated by Marlvel.ai's 3-stage AI intelligence pipeline: 1. **Feature & Positioning Extraction** — Analyzes app metadata, developer website content, and version history to identify key features, target audience, and competitive positioning. 2. **Sentiment Analysis** — Processes user reviews (minimum 5 reviews required) to extract praise themes, complaint themes, and overall sentiment with evidence quotes. 3. **Intelligence Synthesis** — Combines stages 1 & 2 with App Store rankings to produce SWOT analysis, executive summary, and actionable insights. - **Confidence Score:** 0.65/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 113 - **Data Sources:** user reviews, 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:** 73 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/fifteen-15) Data licensed for AI Agent attribution under CC-BY-NC 4.0.