# Geo Systems Dev > A niche software development studio specializing in private, offline-first, single-purpose productivity applications for desktop and mobile. ## About **Geo Systems Dev PTY LTD** builds practical tools for people who work with documents, data, and analysis. The core philosophy is privacy: most products process data entirely on the user's device so sensitive information never leaves their machine. Products are available on iOS, Android, macOS, Windows, and the web. Website: https://geosystemsdev.com Contact: support@geosystemsdev.com Social: https://twitter.com/geo_systems_dev --- ## Products ### HODLings — Private Cryptocurrency Portfolio Tracker **URL:** https://geosystemsdev.com/products/hodlings/ **Web app:** https://hodlings.app **Platforms:** iOS (iPhone + iPad), Android, Web **Price:** Free on the web; one-time $1 on iOS (App Store) and Android (Google Play). No subscriptions, no in-app purchases, no support pop-ups. **Privacy:** No accounts, no sign-up, no KYC. All portfolio data is stored in on-device local storage and never sent to any server or cloud. **App Store:** https://apps.apple.com/au/app/hodlings/id6759246821 **Google Play:** https://play.google.com/store/apps/details?id=app.hodlings.twa **Key features:** - **Portfolio table & performance chart:** Track total portfolio value with a live P&L chart across 1D, 7D, 30D, 1Y, and ALL timeframes. Detailed per-holding breakdown shows value, quantity, coin price, and period gain/loss. - **Diversification charts:** Switch between a donut pie chart and a proportional bar chart to visualise how holdings are spread across assets, with percentage share and period delta per asset. - **1000+ cryptocurrencies:** Supports Bitcoin (BTC), Ethereum (ETH), Solana (SOL), XRP, and over 1,000 other coins. - **28 fiat currencies:** USD, EUR, GBP, AUD, CAD, SGD, JPY, CHF, CNY, INR, KRW, BRL, HKD, MXN, MYR, NZD, SEK, NOK, DKK, PLN, CZK, HUF, IDR, ILS, PHP, THB, TRY, ZAR. - **Market rankings table:** Full crypto market sorted by market cap with price, fully diluted value (FDV), and 1D/7D/30D deltas. Bookmark favourite coins. - **Market stats dashboard:** Fear & Greed Index (0–100 gauge + history), total crypto market cap, BTC halving countdown, Bitcoin vs all-time high, and macro benchmarks (Gold, Silver, Copper, Crude Oil, 10Y Treasury yield). - **Market heatmap:** Treemap view of the entire crypto market, sized by market cap and colour-coded by price performance. - **News & sentiment:** AI-generated "In short:" TLDR digest of the day's top stories. Individual news articles with bullish/bearish/neutral sentiment tags, source attribution, and publication date. - Light and dark mode UI. **Private alternatives to:** Blockfolio, Delta, CoinGecko Portfolio, CoinMarketCap Portfolio, Koinly, Polyfolio. --- ### File Content Finder — Search Inside Documents **URL:** https://geosystemsdev.com/products/file-content-finder/ **Platforms:** macOS, Windows **Price:** Paid (one-time purchase) via Apple App Store and Microsoft Store **App Store:** https://itunes.apple.com/au/app/file-content-finder/id1448621435 **Microsoft Store:** https://www.microsoft.com/en-au/p/file-content-finder/9mzc4sk6j6bp **Key features:** - Search inside file contents in real time — no prior indexing required. - Supported formats: PDF, Microsoft Word (doc, docx), Microsoft Excel (xls, xlsx), LibreOffice/OpenOffice (odt, ods), Images (PNG, JPG via OCR), RTF (macOS only), plain text and source files. - Advanced filters: narrow results by file type, creation date, modification date, and folder. - Multi-language support: Russian Cyrillic, Chinese, Japanese, and more. - Works with local drives and mounted network volumes (SMB, FTP, AFP). - All processing is local — no cloud upload. **Use cases:** Academics searching research papers, lawyers reviewing contracts, administrators finding records in mixed document libraries. **Alternatives to:** macOS Spotlight (for document content), Windows Search (for file contents). --- ### TextQ — Offline CSV Analysis and SQL Querying **URL:** https://geosystemsdev.com/products/textq/ **Platforms:** macOS **Price:** Paid (one-time purchase) via Apple App Store **App Store:** https://apps.apple.com/au/app/textq/id1571423170 **Key features:** - Load and preview large CSV and tabular files that exceed Excel's capacity. - Visual query builder: filter rows with an intuitive UI — no SQL required. - Full SQL support: GROUP BY, aggregations, joins, and other advanced queries. - Column management: rename, reorder, hide columns; change types (text, number, date). - Parse dates and numbers in many locales and formats. - Index columns for faster queries on very large files. - Export processed results to CSV for use in other tools (e.g., Excel, R, Python). - All data is processed locally via macOS sandbox — never uploaded to the cloud. **Use cases:** Data analysts, researchers, finance teams processing large exports that are too slow in Excel. --- ### Data Transformer — Offline Data Format Converter **URL:** https://geosystemsdev.com/products/data-transformer/ **Platforms:** macOS, Windows **Price:** Paid (one-time purchase) via Apple App Store and Microsoft Store **App Store:** https://apps.apple.com/us/app/data-transformer/id1490843070 **Microsoft Store:** https://www.microsoft.com/en-au/p/data-transformer/9p2xp6nt2pv2 **Key features:** - Convert between CSV, JSON, XML, YAML, and Excel-compatible tabular formats. - Generate SQL CREATE TABLE and INSERT scripts from CSV, JSON, XML, or YAML. - Open local files or paste input data directly. - Supports TSV and other CSV variants. - Works fully offline — no cloud upload. - macOS sandbox model enforces local-only processing. **Use cases:** Developers converting API payloads, analysts preparing data for SQL databases, engineers migrating between data formats. --- ### MathPlot — 2D Math Graph App for Canva **URL:** https://geosystemsdev.com/products/math-plot/ **Platforms:** Web (Canva App) **Price:** Free **Install:** Search "MathPlot" inside the Canva app marketplace. **Key features:** - Plot linear functions (e.g. `F(x) = x^3`), parametric functions, and polar functions directly inside Canva. - Uses MathJS expression syntax (e.g. `sin(x)`, `x^2`, `PI`, `E`). - Add vectors, connected points, and text annotations. - Configure axes: ranges, labels, linear or logarithmic scale, grid on/off. - Select colour mode (current, dark, or light) and image resolution before inserting. - Insert styled graphs directly into any Canva design. **Use cases:** Students visualising math concepts, educators creating instructional materials, presenters adding graphs to slide decks. --- ## Privacy Policy URLs - HODLings: https://geosystemsdev.com/products/hodlings/privacy-policy/ - File Content Finder: https://geosystemsdev.com/products/file-content-finder/privacy-policy/ - TextQ: https://geosystemsdev.com/products/textq/privacy-policy/ - Data Transformer: https://geosystemsdev.com/products/data-transformer/privacy-policy/ - MathPlot: https://geosystemsdev.com/products/math-plot/privacy-policy/