Timastra Calculator

Keep your basic calculator beside your work for free. Timastra Calculator includes a movable floating calculator and a complete advanced toolkit available through one lifetime Pro purchase. Browse all tools and enter inputs before buying; running advanced calculations requires Pro. Free Basic + Float Calculate arithmetic and percentages, use memory, copy results and revisit calculator history. Move, resize or minimize the floating calculator above other apps, or use the full-screen app. Adjust opacity, choose standard light/dark or high-contrast appearance, and use accessible controls. Android may hide overlays on protected screens; full-screen calculation works without floating permission. Pro scientific and engineering tools Unlock functions, powers, roots, trigonometry, logarithms, equations, matrices, graphing, statistics, calculus and programmer tools. Work with exact arithmetic where supported and inspect inputs, units, precision and model assumptions. Pro finance and everyday calculations Explore time-value-of-money, mortgage, debt, retirement, savings, bonds and cash-flow tools. Calculate fuel or EV trip costs, compare package prices, estimate materials, scale recipes and estimate wages with your own rules. These are entered-input models with stated conventions, not personalized financial recommendations. Pro conversions and currency Calculate across 29 conversion categories with mixed measurements, custom units, multiple outputs, favourites and saved conversion history. Currency uses manual or saved ECB reference rates with optional refresh. No amounts or selected currency pair are sent to the ECB. Reference rates are informational, not bank/card quotes. Pro reusable workspaces Build custom calculators, run batches, save formulas and organize notebooks with notes, tables, graphs and reports. Premium themes and saved window layouts are included. Pro recognition, AI and sync Review supported photo text and handwriting before using recognized content. On-device AI depends on device/model support and may need setup. Optional cloud AI and manual WebDAV sync use credentials you supply; provider terms and costs are separate from Pro. No subscription or calculator account is required. Your saved work remains yours Reading and exporting previously saved work, calculator history, backup/restore and storage recovery remain available without Pro. Existing inputs and calculations are preserved when access changes. Encrypted-file recovery remains available without buying Pro. One lifetime purchase Google Play displays your localized price before purchase. Pro has no recurring charges. Verified access works offline; buying, verifying and restoring purchases require connectivity. Basic + Float remains available if purchase services are unavailable. Privacy and access No ads. Local calculations stay on your device unless you explicitly export or transfer them. Google ML Kit may send SDK diagnostics; purchase verification and optional downloads/connections use the network as described in our privacy policy. Keep backups before uninstalling. Android 8.0 or newer is required.

Basic calculator and floating mode stay free. Browse all advanced tools and edit inputs before buying. Calculate, conversions, OCR, AI and sync now require the existing lifetime Pro unlock. Saved work, history, backup and recovery remain accessible. Purchase prompts preserve drafts and return you to the tool you were using. Improved compact layouts and purchase-state synchronization.