How can we help you?

Folder: Create a new local project in a directory of your choice on your device.

Template: Choose from 16 curated templates, including multilingual starters for 11 non-Latin languages (Arabic, Persian, Urdu, Simplified Chinese, Japanese, Korean, Russian, Vietnamese, Hindi, Marathi, Thai with font chip pickers and one-tap font installation), an Exam class with grading score tables and `\printanswers` answer keys, theses, articles, reports, and Beamer decks.

Cloud Storage: Open projects directly from your connected cloud provider (iCloud Drive, Google Drive, Dropbox, OneDrive, Box, Yandex Disk, or Amazon S3).

Clone Git Repository: Clone remote repositories over HTTPS using personal access tokens (GitHub, GitLab, Bitbucket, Overleaf).

Import Archive Project: Import packaged projects directly from `.zip` archives via Tools → Import / Export.

Recent projects can be sorted by Last opened or Name directly from the home screen.

Local Sandbox & External Folders: You can store documents inside the app’s Documents directory or open existing folders from the iOS Files app or Android Storage Access Framework (SAF).

Security-Scoped Bookmarks (iOS): When you pick a project folder from the Files app (such as iCloud Drive or external USB drives), TeXAnt maintains persistent access so you can edit, compile, and run Git without re-selecting it.

Clean Workspace Mode: Enable in Settings → Behaviors to hide intermediate compilation artifacts (such as `.aux`, `.log`, `.synctex.gz`, `.toc`, `.out`, `.bbl`, `.fls`, `.fdb_latexmk`) from the file tree, keeping your project organized.

Open Settings → About → App & Subscription and tap Rerun Setup Wizard.

The wizard allows you to reconfigure interface language (25 supported languages), app and editor themes, package bundles (Minimal, Recommended, Extended), and storage defaults.

Rerunning the setup wizard is completely safe: it does not delete your documents, projects, or credentials.

11 Settings Menus: Appearance, Editor, Package & Font Management, PDF & Viewer, Behaviors, LaTeX Settings, Source Control, Reference Managers, Sync & Backup, AI Assistant, and About.

In-Settings Instant Search: Quickly locate any toggle, slider, or configuration option across all 11 menus using the top search bar.

Independent Reset Buttons: Key setting categories feature their own "Reset to Defaults" button without wiping other configurations.

Left Rail Tools Menu: Access Import / Export, Project Management, File, LaTeX, Sync / Backup, Refresh Folder, and Close / Delete Current Project in one tap, plus the … menu for the Math Equation Editor, Bibliography Manager, Math OCR, and Beamer Presentation.

Unlike web-based editors that upload code to remote build servers, TeXAnt compiles your LaTeX sources entirely on your device’s local CPU.

There is zero upload latency, no queue waiting time, and total privacy: your manuscripts, equations, and images never leave your hardware.

Compilation works seamlessly in airplane mode, high-security lab networks, and remote field locations without any internet connection.

LuaHBTeX (Default): Integrates the HarfBuzz shaping engine directly into LuaTeX. It is the gold standard for modern OpenType fonts, bidirectional text, and complex multilingual scripts (such as Arabic, Hebrew, Devanagari, and CJK). When compiling standard LaTeX documents, the log normally shows `format=lualatex`.

LuaTeX (Plain): A lightweight environment for plain TeX documents that does not load standard LaTeX macros.

You can switch engines in Settings → LaTeX Settings → TeX Engine.

Full compile (Resets auxiliary files): Deletes previous auxiliary files (`.aux`, `.toc`, `.out`, `.bbl`, etc.) and runs convergence from scratch. This guarantees a clean state but takes more passes for documents with bibliographies and tables of contents.

Fast compile (Keeps auxiliary files): Retains valid auxiliary files from the previous compile. Because LaTeX truncates and rewrites `.aux` on every run, newly added `\label` and `\cite` keys are preserved and resolved in significantly fewer passes.

Automatic Safety Gates: If the previous compile had an error, or if an `.aux` file is structurally corrupted, TeXAnt automatically cleans auxiliary files and falls back to a clean compile.

Set your default mode in Settings → LaTeX Settings → Compile button default.

In projects you haven’t explicitly marked as trusted, TeXAnt enforces a 10-minute compile time limit to guard against infinite macro loops (such as runaway recursive definitions or broken TikZ loops).

At the 3-minute mark, TeXAnt displays a prompt allowing you to tap Continue to lift the time limit for that single compilation run.

To disable this safety check, toggle off Compile time limit in Safe mode in Settings → LaTeX Settings, or trust the project from the Project Hub.

You can also halt any running compilation immediately by tapping the Stop button in the compile menu.

Specify your master file by placing the standard magic comment at the very top of your child `.tex` files: `% !TEX root = ../main.tex` (fully compatible with TeXShop, TeXstudio, and VS Code).

Resolution Precedence: TeXAnt resolves the compilation root strictly in order: 1) Inline `% !TEX root` directive, 2) Project-level main document setting, 3) Default `main.tex`.

When editing any chapter or sub-file (e.g., `chapters/intro.tex`), tapping Compile compiles the master document and updates the shared output PDF.

SyncTeX correctly correlates line numbers in sub-files directly to their exact page and paragraph in the output PDF.

Quick-insert backslashes `\`, braces `{ }`, brackets `[ ]`, superscripts `^`, subscripts `_`, math delimiters `$`, and symbols without switching keyboard layers.

Enable or disable the bar in Settings → Editor → LaTeX Keyboard Bar.

For hardware keyboard users (Apple Magic Keyboard, Smart Keyboard), standard desktop shortcuts are supported: `⌘B` (compile), `⌘R` (fast compile), `⌘S` (save), `⌘F` (find & replace), and `⌘D` (multi-cursor).

Preamble-Aware Autocomplete: Suggests commands, environments, figure/table `\ref` labels, and `.bib` citation keys as you type.

Synchronized Environment Renaming: When you modify the tag in `\begin{equation}`, the matching `\end{equation}` updates simultaneously in real time.

Bracket Pair Colorization & Indentation: Visual rainbow color pairs make deeply nested formulas and environments easy to read at a glance.

Code Folding: Fold sections from `\part` down to `\subsubsection`, as well as complex environments like tables and figures.

Full App RTL Layout: Selecting Arabic, Persian, or Urdu transforms the entire application interface into a right-to-left layout. Directional navigation icons mirror, the project sidebar drawer slides in from the right, and input fields align natively.

Per-Line Automatic Text Direction: By default, the editor dynamically evaluates each line: LaTeX command structures flow LTR, while Arabic, Persian, or Urdu prose flows naturally RTL. LaTeX commands and macros are isolated as protected LTR blocks (`bidiIsolates`), and the line number gutter shifts to the right side.

Vim Mode: Turn on modal navigation (`Normal`, `Insert`, `Visual`) under Settings → Editor → Vim Keybindings.

Spell Check: Multi-language spell checking highlights misspelled words with contextual correction popovers.

Auto Save Policies: Set to `After Delay` (500–3000 ms, default 800 ms), `On Focus Change` (switching tabs), or `On Window Change` in Settings → Behaviors.

Floating Quick Command Button (⌘): A draggable overlay icon docked over the editor providing quick access to common actions. You can reposition it or turn it off in Settings → Behaviors → Show Floating Quick Command Button.

1. Enable SyncTeX in Settings → LaTeX Settings → SyncTeX (set to On). Note: SyncTeX takes effect on the next compile.

2. Forward Sync: In split view, tap inside any paragraph or equation in the LaTeX code editor to immediately highlight the corresponding position in the compiled PDF.

3. Inverse Sync: Tap or click on any sentence, table, or formula in the PDF viewer to instantly jump the editor cursor to the exact source code line.

SyncTeX data is generated natively inside the sandbox during the compilation pass.

Continuous vs Paged: Choose between vertical smooth continuous scrolling or discrete single-page flip mode in Settings → PDF & Viewer → Layout.

Two-Page Spread (iOS): Inspect book layout balance with side-by-side spreads and an optional standalone cover page—ideal for iPad proofreading.

Reading Themes: Switch the PDF viewer background between Normal, Night Mode (inverted dark tones), or Sepia (warm paper tone for eye comfort).

Disk Mode (Default): The engine writes the output directly to a `.pdf` file in the project folder. Best for multi-file projects, external syncing, and permanent storage.

Memory Mode (Base64 - iOS): The compiler streams raw PDF bytes directly into RAM as a Base64 payload, updating the viewer with zero disk write overhead.

Select your preferred mode in Settings → PDF & Viewer → Layout → PDF Output Mode.

PDF/A Profiles: Under Settings → PDF & Viewer → PDF/A + Metadata, choose between `PDF/A-1b`, `PDF/A-2b`, `PDF/A-2u`, `PDF/A-3b`, `PDF/A-3u`, or `PDF/A-4f`.

Document Metadata: Define Title, Author, Subject / Abstract, and Keywords embedded in the document catalog.

Blind Peer-Review Protection: In the Configuration tab, enable Omit Info dictionary or metadata filter masks to completely strip device, author, and timestamp identifiers before journal submission.

Automatic Resolver: When compilation halts due to a missing package (e.g., `! LaTeX Error: File 'microtype.sty' not found`), TeXAnt detects the dependency and displays a download prompt. Tapping Install downloads and extracts the package from CTAN mirrors, then immediately resumes compilation.

Manual CTAN Search: Open Settings → Package & Font Management → Install → Install from CTAN to search any package name from the Comprehensive TeX Archive Network.

An internet connection is required only during the package download itself; once installed, compilation remains 100% offline.

Under Settings → Package & Font Management → Bundles & Collections, you can install pre-configured bundles:

Minimal: Bare essentials required for lightweight LaTeX compilation with minimal storage footprint.

Recommended: Covers popular math, science, graphic, and citation packages (amsmath, graphicx, hyperref, biblatex, etc.).

Extended: Comprehensive installation featuring extensive multilingual fonts, TikZ libraries, Beamer, and specialized publisher templates.

You can also install individual collection groups: Fundamental, Core Extensions, Languages, and Optional.

Go to Settings → Package & Font Management → Install → Install from Archive.

Supported archive formats include `.zip`, `.tar`, `.tar.gz`, `.tgz`, `.tar.xz`, and `.txz`.

Files are automatically unpacked into the user local tree (`texmf-local`), and the internal `ls-R` file index is rebuilt automatically.

Fonts Tab: Browse all installed font families, file counts, and formats (TrueType, OpenType, Type 1, AFM, and Virtual Fonts).

Math Fonts: In Settings → LaTeX Settings, choose between STIX Two Math, Fira Math, or XITS Math for formula preview palettes.

Clear Cache: If you experience font loading errors or missing glyph warnings, open Settings → Package & Font Management → Settings and tap Clear Cache to refresh the LuaTeX font database.

Clear Installed Packages & Fonts: Resets the local `texmf-local` directory if you ever wish to start fresh.

Supported providers: iCloud Drive, Google Drive, Dropbox, OneDrive, Yandex Disk, Box, and Amazon S3.

Connect accounts in Settings → Sync & Backup → Cloud Providers.

One provider can be designated as the Default for automated synchronization and scheduled backups.

Amazon S3: Uses direct bucket, region, and access key credentials with optional custom endpoint URLs.

Enable Auto Sync: Runs an automatic sync check at your chosen interval (`5`, `15`, `30`, or `60` minutes).

Sync on Save: Automatically pushes modified files to the cloud whenever you save or auto-save triggers.

Sync on App Close: Performs a final synchronization pass when the app transitions into the background.

Wi-Fi Only: When enabled, automated sync is paused while on cellular data to prevent mobile plan overages.

Include Compiled Files: Sync generated PDFs alongside your TeX code so compiled papers are instantly available on your other devices.

Ask User (Default & Recommended): When a timestamp/content collision occurs, sync halts and asks you which version to keep.

Use Local Version: Overwrites the cloud copy with your local tablet version.

Use Cloud Version: Discards local changes and replaces the document with the cloud version.

Keep Both Versions: Preserves your local file and downloads the cloud file with a conflict timestamp suffix.

Inspect waiting unresolved items anytime via the Sync Conflicts button.

Configure in Settings → Sync & Backup → Backup.

Independent Destination: Your Backup Destination can be set to a different cloud provider than your active sync provider.

Schedule: Set automatic backups to `Hourly`, `Daily`, or `Weekly`.

Retention Policy: Set how many historical versions to preserve (`Keep 5`, `10`, `20`, or `50` backups); older archives are pruned automatically.

Backups package your entire project into timestamped archives, with options to include compiled PDFs and auxiliary files.

Open Settings → Source Control → Git Providers and select your provider.

Supply a Personal Access Token (PAT) with repository read/write scopes. Your credentials are encrypted locally on the device.

Overleaf Git Integration: Connect your Overleaf projects via Overleaf Git credentials to push and pull changes directly from your tablet.

Configure your commit author Name and Email in the General tab.

Tap the Git icon on the editor left rail to view modified, untracked, and deleted files.

Stage / Unstage: Stage individual files or tap Stage All.

Commit: Write a descriptive commit message and tap Commit.

Push & Pull: Sync your branch with remote tracking branches in a single tap.

Branch Management: Create new branches, switch between existing branches, and inspect branch histories without leaving the app.

Under Settings → Source Control → Expert → Auto-commit, enable the automatic commit timer.

Set the commit interval (e.g., every 15 minutes) and customize the commit message prefix (default: `🤖 Auto-commit:`).

Auto-commit only commits locally to your current branch; it will never force-push to a remote repository automatically.

Open Settings → Reference Managers.

Zotero: Connect using your Zotero User ID and API key to fetch collections and items.

Mendeley: Connect via secure OAuth login to synchronize your reference folders.

EndNote: Connect via EndNote Web credentials to import bibliographic records.

Once connected, you can search and insert `.bib` entries right from the editor or the References panel.

Tap the References icon on the left rail to view counts for total citations, figures, tables, and cross-references.

Citations Tab: Lists all `\cite{key}` occurrences with file and line numbers (e.g., `main.tex:194`). Tap any entry to jump directly to the code.

Labels Tab: Shows all `\label{...}` definitions across the project. Recommended prefixes: `fig:*`, `tab:*`, `eq:*`, `sec:*`, `thm:*`.

Diagnostics: Detects undefined reference keys, missing bibliography entries, and duplicate labels before you submit your manuscript.

Bibliographies (BibTeX & Biber): Both classic `.bib` BibTeX and modern `biblatex` / Biber workflows (`.bcf` → `.bbl`) are orchestrated locally.

Indexes & Glossaries: Built-in native engines handle `makeindex`, `makeglossaries`, and `nomencl` passes directly on your device, allowing complex multi-pass documents to settle automatically.

During multi-pass convergence, citations, table of contents, lists of figures, and indexed terms settle seamlessly in local memory.

Configure in Settings → AI Assistant → Providers.

Supported providers: Anthropic (Claude 3.5 Sonnet / Haiku), OpenAI (GPT-4o), Google Gemini, OpenRouter, and NVIDIA.

Fine-Tuned Parameters: Anthropic models support Thinking Depth (Effort) settings (`Default`, `Low`, `Medium`, `High`) to balance deep reasoning against latency and token budget. Other providers feature an adjustable temperature slider.

Zero Middleman: API keys are stored encrypted on your device. Requests travel directly from your tablet to the provider of your choice—TeXAnt servers never intercept your prompts or document excerpts.

Custom prompt modes include `Code only`, `Explained`, `Debug`, and `Optimize`.

When compilation fails, open the Problems / Errors panel on the left rail.

Tap Diagnose with AI next to any error message. TeXAnt passes the error context, offending line, and relevant preamble packages to your configured AI model.

Smart Document Context: In AI Chat, the active document is sent completely on the first round, followed only by line diffs in subsequent turns. In multi-file projects, master preambles and section outline maps are cached once, ensuring fixes apply cleanly only to the active document.

Review proposed code adjustments in the Interactive AI Diff Inspector to accept or reject changes hunk by hunk.

1. Install the offline model: Open Settings → AI Assistant → OCR and tap Install Model (~105 MB download).

2. Open Math OCR from the left rail’s … menu.

3. Snap a photo with your camera or import an image from your photo library.

4. Drag a bounding box over the formula you wish to convert (or process the full image).

5. Inspect and edit the extracted LaTeX syntax before inserting it into your document.

On iPad, tap the Math OCR canvas and write equations using Apple Pencil (PencilKit).

Recognition runs debounced after you pause writing, streaming strokes to Pix2Text formula OCR.

Recognized LaTeX syntax appears immediately in the preview box for one-tap insertion into your document.

iOS & iPadOS: Requires iOS 16.4 or iPadOS 16.4 or later on Apple Silicon (M1/M2/M4) or A-series 64-bit devices.

All core typesetting engines, basic TeX Live macros, and font tools ship pre-installed inside the app binary.

An internet connection is required only for initial CTAN package downloads, cloud synchronization, and AI queries.

Open Settings → About → App & Subscription.

Tap Restore Purchases.

TeXAnt communicates directly with the App Store via StoreKit to verify your active entitlement. Pro features will unlock immediately.

In the app: Open Settings → About → App & Subscription and tap Manage subscription to jump directly to Apple’s subscription manager.

Alternatively: Open the iOS Settings app → tap your Apple Account Name at the top → Subscriptions → select TeXAnt.

Cancel at least 24 hours prior to the renewal date to avoid being billed for the next period. Note that deleting the app does not cancel an active subscription.

No Document Uploads: Your manuscripts, compiled PDFs, and formulas never travel to TeXAnt servers.

Telemetry is Off by Default: Diagnostic telemetry and crash logs are strictly opt-in under Settings → About → Privacy & Legal → Telemetry / Crash Reports.

Data Deletion & Export: In Settings → About → Privacy & Legal, you can trigger Request Data Deletion (GDPR Art. 17) or Request Data Export (GDPR Art. 20) with requests fulfilled within 30 days.