Kairon vs Stars*
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kairon
This app provides precise astrological calculations without interpretations. It offers extensive customization for house systems, aspects, and celestial bodies, with a wide range of charting methods and zodiacs. Users can cast charts for a vast historical period and view detailed positional data.
- Precise astrological calculations
- 26 house systems
- 29 Anayamsas
- 23 Aspects plus parallel
- Extensive ephemeris data
- Multiple zodiac and chart types
- Synastry, Composite, Transits, Progressions
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Kairon is an astrology calculation software for highest precision calculations. Kairon will not do any interpretations for you, nor will it teach you astrology. ************************************************ Kairon can be very individually configured, or it can be used with the standard settings as is. All settings take immediate effect and are no longer outside of the app like in previous versions. ************************************************ Features: Self updating atlas, that will go with every update of the iOS itself. 26 house systems 29 Anayamsas 23 Aspects plus parallel Kairon contains the Ephemeris data for - Sun - Moon - Mercury - Venus - Mars - Jupiter - Saturn - Uranus - Neptune - Pluto - true and mean Nodes. Additionally you have the following Asteroids and Objects built in: - True and Mean Lilith - Chiron - Pholus - Nessus - Lilith (Asteroid) - Ceres - Pallas - Juno - Vesta - Isis - Quaoar - Sedna - Vulcan - Part of Fortune - Part of Spirit - Vertex - and more, including Eris, Witte's planets and many asteroids... You can cast your charts from the years 1200 - 2399 for all the above objects. There are two Zodiacs, one with twelve equal signs, the other with those twelve equal signs surrounded by 13 differently sized signs which reflects the actual sky at night. Included is also the medieval square chart and the two basic vedic square charts. Retograde objects are (optionally) drawn in a separate color. The chartwheel and the aspectgrid can be scaled, colors can be stored in setting objects, so you can switch your look and feel with your moods. The following Methods are implemented: - Synastry - Composite - Combine - Solar - Lunar - Transits - Progressions. In text-View you get exact planet and house positions to one second of arc. Lists can be displayed showing Firdaria Listing in Text Mode, medieval dignities, vedic dignities, positions of cusps and objects.
Stars*
This app provides detailed astrological calculations and interpretations for birth charts and transits. It features animated charts with timeline controls and precision wheels, offering in-depth analysis for users interested in astrology.
- Expert scrollable interpretations
- Animated transit charts
- Freeze/step through transits
- Precision wheel charts with zoom/pan
- iPad split-screen functionality
- Birth place database
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Astrological calculations with accuracy matching Astro Dienst (astro.com). Preloaded with natal data for 100 celebrities including Volodymyr Zelenskyy, Vladimir Putin, and Donald Trump—easily add yourself and loved ones. KEY FEATURES: • Expert scrollable interpretations for birth charts and transits • Smoothly animated transit charts (month to century timelines) • Freeze/step forward or backward through transits • Precision wheel charts with zoom/pan for full detail • iPad split-screen: edit birth data → instant chart updates • Birth places for all major world cities + manual map override
Screenshots
Verdict
The clearest difference is rating: Stars* at 4.0 against Kairon's 3.0. Stars* also leads on update cadence (monthly vs every 6 months) and price ($4.99 vs $9.99). Kairon's advantage is ratings volume (8 vs 1). On review sentiment, ads, in-app purchases and monetization model 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
Kairon costs $9.99 and Stars* $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stars* holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: Kairon has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 51% of Kairon's written reviews are positive against 50% of Stars*'s, so the app with the better star average is not the one people write more warmly about.
Kairon ships an update every 6 months, Stars* monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Kairon | Stars* |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 3.0 (8 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 51.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 9.3 — better |
| Further details — not scored | ||
| Size | 37 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Kairon K.S. | Atle Wilhelmsen |
Customer experience
Kairon
Stars*
In-app purchases
Kairon
No in-app purchases
Stars*
No in-app purchases









