Acknowledgements

MindKnot — iOS & iPadOS Puzzle App Developer: Harshit Gindra Version: 1.0 (V2 features in development) Bundle ID: com.hgindra.mindknot

Open-Source Libraries

GRDB.swift

Author: Gwendal Roué Version used: See Package.resolved for exact version Repository: https://github.com/groue/GRDB.swift Purpose: Reading the bundled SQLite riddle database at runtime Licence: MIT License

MIT License

Copyright (c) 2015-present Gwendal Roué

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Apple Frameworks

MindKnot is built using the following Apple-provided frameworks, which are part of the iOS SDK and are used under Apple’s standard developer licence:

Framework	Purpose
SwiftUI	User interface construction
SwiftData	Local data persistence (session history, streak, preferences)
CloudKit	iCloud Sync for Pro users; cloud storage for future multiplayer features (Duel Mode, Remote Party — coming in a future update)
MultipeerConnectivity	Local peer-to-peer networking for Local Party Mode
StoreKit 2	In-app purchase processing for MindKnot Pro
Security (Keychain)	Secure local storage of Pro entitlement status
UserNotifications	On-device daily reminder scheduling
UIKit	Haptic feedback engine; App Store review prompt

Riddle Content Sources

Open-Source Riddle Dataset

A portion of the base riddle content used in this app was derived from the following open-source dataset:

Repository: https://github.com/crawsome/riddles Licence: Public Domain / Creative Commons Zero (CC0) Author: crawsome (GitHub)

All riddles sourced from this dataset were paraphrased, reformatted, and enriched before inclusion in the app. The original dataset is dedicated to the public domain and carries no restrictions on use.

AI-Assisted Content Development

The riddle database bundled with this app was developed with the assistance of AI language models during an offline data processing pipeline. This assistance was used for:

Paraphrasing and rewriting base riddle content
Generating progressive hint text (direction hints)
Pre-computing letter-reveal hint patterns
Classifying riddles into categories and difficulty levels
Generating multiple-choice answer options for Party Modes

AI services used during development (not at runtime):

Amazon Bedrock — Claude (by Anthropic) Used as part of the developer’s offline ETL (Extract-Transform-Load) pipeline to enrich riddle content. This service is used only by the developer on their own machine to build the riddle database. The processed riddle database is bundled with the app as a static SQLite file.

The app itself makes no calls to any AI service at runtime. Users’ riddle answers and interactions are never sent to any AI service.

Special Thanks

To the open-source community, whose generosity in sharing code, data, and knowledge makes projects like this possible.