Comparison

Dyausa vs Sha'ar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dyausa

Features
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Dyausa: Vedic Sky Map Dyausa is the only iOS sky map dedicated to and built for the Vedic night sky, which includes the 27 nakṣatras, the 12 rāśis, and 108 padas as true sky regions. This app also shows the positions of Yogatārās, Vedic star names, Rāhu and Ketu. Point your device up and see the real stars, planets, and Moon with the Vedic map drawn behind them, the way Vedic astronomers and ancient ṛṣis have charted it for millennia. For stargazers, students, and the community of Vedic-astronomy enthusiasts, this is a real planetarium built on a real ephemeris and your location that speaks the Vedic sky natively. This tool will greatly benefit the Vedic astronomy community as it displays ancient mathematics on your device — a yantra for seeing, learning and discovering. What Dyausa draws: • Live crosshair readout — point anywhere and read the rāśi, nakṣatra, and pada in real time. • Yogatārā highlighting — focus any nakṣatra zone and its true anchor star or constellation lights up on the live sky: Jyeṣṭhā lights up red Antares, the heart of the scorpion; Śravaṇa lights the three stars of hearing with Altair in the middle; Kṛttikā lights the Pleiades. • Travel anywhere — search any place on Earth and see the Vedic sky exactly as it stands there, then return to your own location whenever you like. • Travel in time — move the sky forward or back to any date and watch the grahas, the Moon and the nakṣatras shift, or look ahead to a date that matters to you. • The sky divided the Vedic way — the ecliptic sliced into sectors and drawn as beams across the real stars: the 12 rāśis, the finer 27 nakṣatras, and the finest 108 padas — three ways of carving the same great circle — plus Rāhu and Ketu, the lunar nodes. • The real sky underneath — accurate stars, constellations, the Milky Way, Sun, Moon, and planets for your exact time and place. • Sanskrit or English — real Devanāgarī names, or English — your choice.

About

Sha'ar

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Sha'ar teaches you to compute gematria — the numeric value of Hebrew words — and it never hands you the table. THE SILENT TABLE The first act shows no values at all. You place letters, watch a total move, and work out what each letter is worth from the arithmetic alone. By the time the table appears, you have already built it. FIVE ACTS Each act introduces a cohort of letters and one new way of reading them — a Vessel. Units, then tens, then hundreds, then the closing forms, where position becomes part of the arithmetic. Eight readings in all: standard (hechrachi), great number (gadol), small number (katan), ordinal (siduri), and the cipher readings atbash, albam, kidmi and perati. GATES A gate names a value. You have five places on the altar and a hand of letters, and you have to reach that value exactly, with a word that is really a word. Your multiplier starts at five and drops by one each time you pay to be shown what a letter is worth. Nothing makes you guess blind; everything charges you for not knowing. THE DAILY GATE One gate a day, seeded from the date, identical for everyone playing it. Nothing is shown, nothing can be bought, and there is no second attempt. Free, every day. A CORPUS TAKEN FROM THE TEXT 583 words, and they are not a selection anybody made up. 580 of them are attested in the Hebrew Bible, 578 carry their Strong's number, every one is vocalised, and each is stored with how often it actually occurs in the text. 582 are read aloud in Hebrew — all of them except the Name. That matters for a reason beyond size: every gate you are asked to reach is reachable with a word that a reader of the Bible would recognise, spelled the way the text spells it. THE CODEX Four tabs. The twenty-two letters laid out as nine families by three magnitudes, so a letter's value is its column times its row. The corpus, with meanings and with what else comes to the same number. A calculator that shows the working letter by letter under all eight methods, computed from what you type and never looked up. And your own name in Hebrew letters, spelled however you decide to spell it. ARITHMETIC, TRADITION, OR COINCIDENCE Fifteen notes remark on numbers that meet. Every one carries a badge saying which kind of claim it is making. — Arithmetic. תורה is 611; the two commandments heard at Sinai bring it to 613. Not open to argument. — Tradition. נחש, the serpent, and משיח, the messiah, both come to 358 — a reading of the Zohar and later commentaries. The source is named, so you can check it. — Coincidence. שדי is 314, which people like to line up with π. The app says plainly that the tradition makes nothing of this. That separation is the reason the app exists. Nothing here is offered as hidden knowledge, and no number is claimed to predict anything. THE PROOF Five gates, cold, with no help of any kind. It changes no score. It is there to tell you what you actually know. WHAT IS FREE Free, permanently: the calculator and all eight methods, the letter grid, the Daily Gate, your name in Hebrew letters, and the first two of the five acts — long enough to find out whether deducing values is something you enjoy. One purchase, once, opens the remaining acts and their Vessels, the full corpus and its recordings, and the Proof. No subscription. PRIVACY No account, no advertising, no tracking. Everything on screen is computed on your iPhone from data carried inside the app, and your progress never leaves the device. The only network the app uses is the one the purchase needs. THE NAME The four-letter Name is never scored and never spoken aloud. How it appears on screen is yours to set. iPhone, portrait, iOS 26 or later. Privacy Policy: https://shaar-prod.web.app/privacy Support: https://shaar-prod.web.app/support

Screenshots

Dyausa4 screens
Sha'ar4 screens

Verdict

The call

The clearest difference is in-app purchases: Dyausa at none against Sha'ar's 1. Dyausa also leads on iOS requirement (17.0 vs 26.0). Sha'ar's advantage is update cadence (daily vs weekly). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sha'ar sells 1 one-off in-app purchase. Dyausa asks for nothing beyond the download.

UpkeepUpdate frequency

Dyausa ships an update weekly, Sha'ar daily. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 3 level
Dyausa versus Sha'ar: the parameters behind the verdict, then further details
ParameterDyausaSha'ar
PriceFreeFree
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size7 MB19 MB
Age rating4+4+
DeveloperAdit GoelLaury Karin MOUBAMBA

In-app purchases

None

Dyausa

No in-app purchases

1 purchases

Sha'ar

One-time1
  • The whole path$6.99

Questions

Is Dyausa free?
Dyausa is free to download, with no in-app purchases.
Is Sha'ar free?
Sha'ar is free to download, with in-app purchases available.
Do Dyausa or Sha'ar have ads?
Neither Dyausa nor Sha'ar shows ads.
Which is updated more often, Dyausa or Sha'ar?
Dyausa ships an update weekly, and Sha'ar daily. Most recently, Dyausa was updated on October 17, 2026 and Sha'ar on October 7, 2026.

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