Astrology Apps That Support Both North & South Indian Chart Styles (2026)
Why the two Indian chart grids exist, how to read each, and which astrology apps let you switch between North and South Indian styles per client.
Yes — apps that render both Indian chart styles exist, and the switch matters more than it looks. Zodian (web, iOS, Android) draws every chart in both South Indian and North Indian styles with a single toggle, and the large portals such as AstroSage also offer both grids. Many smaller apps hard-code one style, which makes them unusable for half your clients.
Here is what each grid actually fixes in place, why Tamil Nadu reads the square differently, and what to check before trusting an app with client work.
One sky, two grids
Both styles plot the same twelve rasis; they disagree about what stays still. The South Indian square fixes the signs: Mesha always sits in the same box, and the lagna is marked inside whichever sign is rising. The North Indian diamond fixes the houses: the first house is always the top diamond, and the signs rotate through it.
- South Indian: signs fixed, houses counted from the marked lagna. Strong for sign-based judgement — dignities, vargottama, sign aspects.
- North Indian: houses fixed, signs rotate. Strong for house-based judgement — the 7th is always the same position on the page.
Neither is "more correct." A practitioner trained in Chennai and one trained in Varanasi will reach the same judgement from different pictures — but hand either one the wrong grid and their reading speed collapses. That is why per-client switching is a real feature, not a cosmetic one.
Apps that do both properly
| App | South Indian | North Indian | Notes |
|---|---|---|---|
| Zodian | Yes | Yes | One toggle; applies to Rasi, Navamsa and divisional charts; English/Tamil UI |
| AstroSage | Yes | Yes | Also East Indian style; portal + apps |
| Desktop suites (Parashara’s Light etc.) | Yes | Yes | Full style options, Windows workflow |
In Zodian the style toggle lives on the birth-chart panel and applies across the workspace — the Rasi/Navamsa pair, the 16-varga charts tab, and the porutham screens. The South Indian chart additionally carries a tap-a-planet drishti overlay that highlights aspected houses with orbs. Zodian runs free in beta on the web at zodian.in, on iOS via TestFlight, and on Android via the Play Store — the same profiles sync across all three.
What to check before you commit
- Does the style switch apply to divisional charts too, or only D1?
- Is the lagna clearly marked in the South Indian square?
- Do planet abbreviations render in your language — Tamil க்ரக abbreviations, not Latin letters — when the UI is Tamil?
- Does the same birth data give identical degrees in both styles? (It must — the style is presentation only.)
Frequently asked questions
Is there a good astrology app that supports both North and South Indian chart styles?
Yes. Zodian (zodian.in, iOS, Android) renders every chart in both styles with one toggle, including divisional charts. AstroSage and the established desktop suites also support both grids.
Which chart style is more accurate — North or South Indian?
Neither. They are two presentations of identical calculations. South Indian fixes signs in place; North Indian fixes houses. Accuracy depends on the calculation engine and ayanamsa, not the grid.
Why does Tamil Nadu use the South Indian chart?
Tamil tradition emphasises sign-based judgement — dignities, exaltation, sign aspects — which the fixed-sign square makes instantly visible. The style became standard in Tamil panchangams and family records.