Repository Analysis

nextcloud/ios

📱 Nextcloud iOS App

2.8 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of nextcloud/ios, a Swift project with 2,456 GitHub stars. SynthScan v2.0 examined 99,441 lines of code across 574 source files, recording 246 pattern matches distributed across 3 syntactic categories. The overall adjusted score of 2.8 places this repository in the Likely human-written band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

2.8
Adjusted Score
2.8
Raw Score
100%
Time Factor
2026-07-14
Last Push
2.5K
Stars
Swift
Language
99.4K
Lines of Code
574
Files
246
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 26LOW 220

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 246 distinct pattern matches across 3 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block215 hits · 212 pts
SeverityFileLineSnippetContext
LOWWidget/Widget-Brinding-header.h1//COMMENT
LOW…ovider Extension UI/DocumentActionViewController.swift1//COMMENT
LOW…tification Service Extension/NotificationService.swift1//COMMENT
LOW…nsion/Notification_Service_Extension-Bridging-Header.h1//COMMENT
LOWTests/TestConstants.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUnitTests/Placeholder.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift1//// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift21// // Launch the app.COMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift41//COMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift61// if turnOnAutoUploadingSwitch.await() {COMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift81// func testAutoUploadNewPhotos() async throws {COMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift101//COMMENT
LOWTests/NextcloudUITests/AutoUploadUITests.swift121// let tablesQuery = app.tablesCOMMENT
LOWTests/NextcloudUITests/UITestError.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift1//// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift21//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift41// try await backend.delete(testFileName)COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift61// guard shareButton.exists else {COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift81// confirmShareButton.tap()COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift101// guard shareButton.await() else { return }COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift121//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift141// let shares = try await backend.getShares(byPath: "/\(testFileName)")COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift161//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift181//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift201//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift221// app.navigationBars.buttons.firstMatch.tap()COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift241//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift261//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift281// guard downloadLimitSwitch.await() else { return }COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift301// }COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift321//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift341// }COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift361// guard shareMenuDetailsCell.await() else { return }COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift381// XCTFail("The switch is not on!")COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift401//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift421// try await backend.createShare(byPath: testFileName)COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift441// guard showShareLinkDetailsButton.await() else { return }COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift461//COMMENT
LOWTests/NextcloudUITests/DownloadLimitUITests.swift481// try await aMoment()COMMENT
LOWTests/NextcloudUITests/BaseUIXCTestCase.swift41 ///COMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift1//// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift21// continueAfterFailure = falseCOMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift41// /// Leads to the Assistant screen.COMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift61// private func retryTask() {COMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift81//COMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift101//COMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift121// XCTAssertEqual(matchingElements.count, 2, "Expected 2 elements")COMMENT
LOWTests/NextcloudUITests/AssistantUITests.swift141//COMMENT
LOW…sts/NextcloudUITests/UITestBackend/UITestBackend.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOW…sts/NextcloudUITests/UITestBackend/UITestBackend.swift21 ///COMMENT
LOW…udUITests/UITestBackend/Responses/SharesResponse.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOW…cloudUITests/UITestBackend/Responses/OCSResponse.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOW…Tests/UITestBackend/Responses/CapabilityResponse.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/Extensions/XCUIElement.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWTests/NextcloudUITests/Extensions/XCUIElement.swift21 ///COMMENT
LOWTests/NextcloudUITests/Extensions/XCUIElement.swift61 ///COMMENT
LOWTests/NextcloudIntegrationTests/Placeholder.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWFile Provider Extension/FileProviderDomain.swift1// SPDX-FileCopyrightText: Nextcloud GmbHCOMMENT
LOWFile Provider Extension/FileProviderDomain.swift41 pathRelativeToDocumentStorage: relativePathCOMMENT
LOWWidgetDashboardIntentHandler/IntentHandler.swift1//COMMENT
155 more matches not shown…
Excessive Try-Catch Wrapping26 hits · 55 pts
SeverityFileLineSnippetContext
MEDIUMiOSClient/Scan document/NCUploadScanDocument.swift130 print("Error: \(error)")CODE
MEDIUMiOSClient/Notification/NCNotification.swift118 print("Something went wrong")CODE
MEDIUM…SClient/Networking/NCNetworking+TransferDelegate.swift224 print("Error: \(error)")CODE
MEDIUMiOSClient/Networking/NCService.swift431 print("Error: \(error.localizedDescription)")CODE
MEDIUMiOSClient/Networking/E2EE/NCEndToEndMetadataV2.swift448 print("Error: \(error.localizedDescription)")CODE
MEDIUMiOSClient/Networking/E2EE/NCEndToEndMetadataV2.swift484 print("Error: \(error.localizedDescription)")CODE
MEDIUMiOSClient/Extensions/Data+Extension.swift38 print("Error: \(error.localizedDescription)")CODE
MEDIUMiOSClient/Extensions/Data+Extension.swift52 print("Error: \(error.localizedDescription)")CODE
MEDIUMiOSClient/Main/Create/NCCreateFormUploadConflict.swift414 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Main/Create/NCCreateFormUploadConflict.swift453 print("Error reading file attributes: \(error)")CODE
MEDIUMiOSClient/Main/Create/NCCreateFormUploadConflict.swift477 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Data/NCManageDatabase.swift326 print("Error opening Realm: \(error)")CODE
MEDIUMiOSClient/Utility/NCUtility+Image.swift103 print("Error: \(error)")CODE
MEDIUMiOSClient/Utility/NCUtility+Image.swift217 print("Error: \(error)")CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift25 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift35 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift45 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift108 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift132 print("Error: \(error)")CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift244 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift265 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift374 print("Error moving \(atPath) -> \(toPath): \(error)")CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift496 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/NCUtilityFileSystem.swift498 } catch { print("Error: \(error)") }CODE
MEDIUMiOSClient/Utility/MigrationMultiDomains.swift112 print("Error while enumerating subdirectories: \(error)")CODE
MEDIUMiOSClient/Utility/MigrationMultiDomains.swift149 print("Error moving \(ocId): \(error)")CODE
Fake / Example Data5 hits · 6 pts
SeverityFileLineSnippetContext
LOWiOSClient/Assistant/NCAssistantModel.swift239 let loremIpsum = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut lCODE
LOWiOSClient/Assistant/NCAssistantModel.swift239 let loremIpsum = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut lCODE
LOWiOSClient/Assistant/Chat/NCAssistantChatModel.swift192 content: "Here is the text: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor iCODE
LOWiOSClient/Assistant/Chat/NCAssistantChatModel.swift192 content: "Here is the text: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor iCODE
LOWiOSClient/Assistant/Chat/NCAssistantChatModel.swift199 content: "Based on the text you provided, here's a concise summary: The document discusses the classic LoremCODE