SolarJewel Engine vs Sumuhurta
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
SolarJewel Engine
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SolarJewel Engine: A High-Precision Celestial Simulator SolarJewel Engineis a standalone astronomical instrument built from years of devoted study in UX engineering, native development, graphics, and celestial mechanics. It was originally created for the Apple Watch and now I introduce this iPhone edition that brings this lightweight, high-accuracy engine to a larger interface. Key Features: - Interactive Time-Travel Gestures I designed this interface to be exploratory. You don't just look at a chart; you fully interact with it: - Vertical Mode-Sweeping: You can swipe between Natal, Transit, Secondary Progression, and Solar Arc visualizations. - House Simulation: Compare house systems (Placidus, Porphyry, Koch, and more) with a horizontal swipe and also see how the local horizon interacts with the ecliptic. - Time-Animation: Swipe horizontally to travel through the planetary cycles. You can watch the aspects reconfigure in real-time as you revisit past life events or look ahead. - Precision Controls: Long-press to quickly reset to โnowโ without needing to go into a submenu. A Professional, Offline Engine SolarJewel is a Zero-Latency utility. It performs 100% of its complex calculations on-device using a licensed Swiss Ephemeris. Total Privacy: Your birth and transit data never leave your device. Deeply Offline: Includes a built-in database of cities and offline timezone resolution. It works perfectly in flight mode or remote locations. Scientific Clarity: The jewel-toned scientific color palettes were designed for optical harmony and accessible data visualization
Sumuhurta
This app analyzes your birth chart to identify the most auspicious times of day for specific activities. It presents these personalized windows of opportunity directly on your screen, offering guidance for deep work, quick tasks, and meetings. All calculations are performed locally on your device for privacy.
- Personalized auspicious timing windows
- Sunrise-to-sunrise daily cycles
- Calculations based on Jyotish principles
- Avoids negative astrological periods
- On-device computation for privacy
- Widgets and Live Activity support
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The best hours of your day, read from your chart. Sumuhurta answers one question โ when today is good for you โ and answers it as one screen. The screen is the sky. It moves from dawn through noon to dusk and true dark, and your windows sit in it as spans of light: one to three in each sunrise-to-sunrise cycle. You may know your chart from apps that read your personality. Sumuhurta reads the other thing a chart holds โ time. In this app, the chart is one input to a traditional timing calculation. Sumuhurta reads choghadiya, hora and the abhijit muhurta against your dasha period, the Moon's position relative to yours, the hour's ruling planet and how it sits for you. Each window carries a plain name. A clear run is long and sustained, for the deep work. Sharp is short and bright, for sending and deciding. Steady is even, for meetings and slower work. Beneath the name, a quiet attribution โ Jupiter hora ยท Amrit โ is there for readers who know Jyotish. The day runs sunrise to sunrise. If your free hours begin at nine at night, your windows do too. Every personal window Sumuhurta surfaces is calculated to avoid Rahu Kaal, Yamaganda, Gulika, and the Kaal, Rog and Udveg choghadiya periods. It does not display negative-period tables or claim to perform a complete electional-muhurta assessment. It keeps its selected personal windows and leaves the rest as open sky. That is the whole idea, and it is on purpose. Everything is computed on your phone. Your birth details never leave it. No account, no email, no sign-in, no advertising, and no analytics SDK. The developer does not collect data from the app. One price, once. Two weeks free first, full product, no card required. After the trial, the app screen โ every window, day and night, the scrub, the share card โ stays free forever. The purchase is Sumuhurta arriving on its own: six widget families, StandBy, window-open alerts, an optional 9pm preview when tonight holds nothing further, and a Live Activity that keeps the open window on your Lock Screen and in the Dynamic Island until it closes. You can also choose to show meetings as faint marks on the day line; Calendar access is requested only when you turn that setting on, and event start and end times are read on your phone. No subscription and no add-ons. The paywall displays the App Store's localized price. Sumuhurta is tradition and guidance, not prediction. It does not read your future, match your compatibility, or explain your personality. It offers selected personal timing windows, and it is made to be worth looking at.
Screenshots
Verdict
The clearest difference is in-app purchases: SolarJewel Engine at none against Sumuhurta's 1. Sumuhurta's advantage is iOS requirement (17.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Sumuhurta sells 1 one-off in-app purchase. SolarJewel Engine asks for nothing beyond the download.
SolarJewel Engine ships an update every 3 weeks, Sumuhurta monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | SolarJewel Engine | Sumuhurta |
|---|---|---|
| Price | Free | Free |
| Positive reviews | โ | 100.0% of reviews |
| Update frequency | Every 3 weeks โ better | Monthly |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | โ | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 26.2 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 22 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Anya Traille | Colorblast LLC |
In-app purchases
SolarJewel Engine
No in-app purchases
Sumuhurta
- Sumuhurta โ Lifetime$49.99
Questions
Is SolarJewel Engine free?
Is Sumuhurta free?
Do SolarJewel Engine or Sumuhurta have ads?
Which is updated more often, SolarJewel Engine or Sumuhurta?
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