> ## Documentation Index > Fetch the complete documentation index at: https://docs.jyotiguide.com/llms.txt > Use this file to discover all available pages before exploring further. # What Is Jyoti Guide? A Vedic Birth Chart Calculator > A jyotiṣa calculator — cast a sidereal birth chart, explore planetary strengths, daśā timelines, transits, compatibility, and more. The **Vedic Birth Chart** app transforms a single birth moment — a date, a clock time, and a place — into a complete *jyotiṣa* reading. At its core it is an astronomical calculator: it determines exactly where the Sun, Moon, the five classical planets, and the lunar nodes (Rāhu and Ketu) stood against the fixed stars at the instant of birth. Around that foundation it layers all the analytical machinery a classical astrologer relies on — planetary strength measurements, life-period timelines, transit overlays, compatibility scoring, and a daily almanac — so that everything from *"which sign is my Moon in?"* to *"what does this year hold?"* can be answered from one place. ## The three tabs The app is organised into three top-level tabs, each addressing a different kind of question. Cast a natal chart and explore it through panels — daśā timelines, transits, annual charts, strength tables, and benefic-point maps. Score two charts against the eight *Ashtakūṭa* factors, check *Mangal dosha*, and compare marriage houses in both the D1 and D9 charts. Browse the daily almanac for any place — *tithi*, *nakṣatra*, *yoga*, *karaṇa*, sunrise and sunset, festival markers, and auspicious windows. **Individual Chart** is the heart of the app. Give it one person's birth data and it casts the natal chart, then lets you explore it through stacked panels: the [Vimśottarī daśā](/guides/vimshottari-dasha) timeline of life periods, the [Gochara](/guides/gochara-transits) view of current planetary transits, the [Tājaka](/guides/tajaka-varshaphal) annual chart, the [Shadbala](/guides/shadbala) strength tables, and the [Ashtakavarga](/guides/ashtakavarga) benefic-point maps. A separate [Workbench](/guides/the-workbench) mode lets you arrange these panels as a customisable multi-panel dashboard. **Couple Compatibility** takes two charts and produces a *Kundali Milan* — the traditional marriage-matching report scored across the eight *Ashtakūṭa* factors out of 36 points, with *Mangal dosha* checks and an examination of the marriage houses in both the *Rāśi* (D1) and *Navāṁśa* (D9) charts. **Panchāng** is the daily almanac. Pick any place and browse a month at a glance, or drill into a single day to see its five limbs — *tithi*, *vāra*, *nakṣatra*, *yoga*, and *karaṇa* — alongside sunrise and sunset times, festival markers, *ekādaśī* days, and auspicious time windows. ## Who it's for The app is built to be genuinely useful at two very different levels of experience. **If you are curious but new to Vedic astrology**, enter your details, read the plain-language explanations of your Moon sign and rising sign, and follow the [Quick Start](/introduction/quick-start) without needing to know any Sanskrit. The [Concepts](/concepts/the-sidereal-sky) section is written to bring you up to speed gradually, one building block at a time. **If you are an experienced reader or student**, the app does not soften or hide the technical layers. It exposes the choice of *ayanāṁśa*, displays *Shadbala* in *virūpas* and *rūpas* alongside the classical minimum-strength thresholds, lets you switch between reading schools (Raman vs. classical BPHS), and renders all sixteen divisional charts of the *Shoḍaśavarga*. Every number is there to be cross-checked against the source texts. ## What it is not The app is a **calculation and reading tool** — not a prediction engine or a life-advice oracle. It does not forecast specific events, generate horoscope prose, or tell you what decisions to make. It gives you an accurate sidereal chart and the full suite of classical measurements derived from it. The art of weighing those measurements against each other and against a lived life remains entirely yours. This app computes and presents — it does not interpret on your behalf. Think of it as a precise astronomical instrument paired with a classical reference library: the chart and the numbers it produces are as accurate as the birth data you supply; reading them with wisdom is the practitioner's work. Ready to see your chart? Head to the [Quick Start](/introduction/quick-start) to cast your first sidereal birth chart in minutes.