AsterNym and CHANI, compared by the people who built one of them
We own one of these two, which you should hold against everything below.
8 min read · Published 7 September 2026
Straight to it
CHANI is a subscription app built on one tradition and one voice: Western astrology written and recorded by Chani Nicholas and her team, wrapped in meditations, courses and a weekly reading. AsterNym is a free site that computes eight symbolic systems from your birth data and shows the arithmetic under each one. If you want a practitioner talking you through your chart in her own words, CHANI does that better than we do. If you want the calculation, several traditions side by side and no subscription, that is us. We built AsterNym, so weigh this accordingly.
Our stake, before anything else
We make one of the two things being compared, and a comparison written by a competitor carries about as much weight as you'd expect. You can't fix that by claiming neutrality, so we've done the next best thing: every claim about CHANI comes from CHANI's own pages or its App Store listing, linked where we make it, and the section on what they do better than us is longer than the one about what we do better.
There's also a thing we won't do. Chani Nicholas is a working astrologer with a large readership, and we've no way to measure whether her readings are more accurate than anyone's, including ours. Nobody has that measure. So this compares two products on what each is built to do. It doesn't rank two astrologers, and any comparison that claims to is selling something.
What each one is
CHANI is an app, and its centre of gravity is a person. Chani Nicholas writes and records the readings; her team writes the rest. You get daily and weekly horoscopes by sign, audio readings, guided meditations, affirmations, sleep stories, journal prompts and courses, including a seven-part one on the Saturn return. It's Western astrology throughout, using whole-sign houses. Their about page says all of it is written and recorded by Chani Nicholas and her team of professional astrologers under a zero-AI policy, by a queer, feminist-led team that hasn't taken venture money.
AsterNym is a website, and its centre of gravity is a calculation. You put in a birth date, time and place; it computes your Western chart, your BaZi, your Zi Wei Dou Shu chart, your Jyotish placements, numerology, a tarot birth card, a Human Design bodygraph and the Chinese zodiac animal, then shows what each one did to arrive at its answer. Alongside those it reconstructs the actual sky over your birthplace, which is astronomy and gets counted separately from the symbolic systems.
Neither is a version of the other. One is a practice you keep up daily with a voice you come to trust; the other is a reference you consult when you want to know what a system says and how it got there.
Side by side
| CHANI | AsterNym | |
|---|---|---|
| Price | $11.99 a month or $107.99 a year on the US App Store, with a limited free tier | Free, including the full report. No account needed to start. One-time star dedications from $9.90 are the only paid thing |
| Traditions | Western astrology | Eight symbolic systems, plus the real birth sky |
| Written by | Chani Nicholas and her team of astrologers, under a stated zero-AI policy | Engines compute every chart fact; a small team writes the interpretations |
| Audio | Readings, meditations, affirmations, sleep stories, a podcast | None |
| Houses | Whole sign | Whole sign |
| Personalisation | Horoscopes by sign, plus your own chart inside the app | The whole chart, and it withholds house-based readings when you have no birth time |
| Shows its working | Interpretation-first; the arithmetic stays behind the curtain | Every page states its conventions and shows the placements it read |
| Community and courses | Courses, rituals, a large membership | None |
| Ratings | 4.9 from about 58,000 US App Store ratings, an Apple Editors' Choice | Too new to have a comparable number |
Six things CHANI does better than we do
Named plainly, because they're real
- A voice. Every reading comes from a named astrologer with a point of view, and it reads like someone wrote it to you. Our interpretations are careful and they are not that. If what helps you is feeling addressed by a person, we're the wrong shape.
- Audio. Hearing a reading while you're on a walk is a different experience from reading one at a desk, and it fits into a life more easily. We have no audio at all.
- One tradition, deeply. Going wide costs depth. CHANI's Western material goes further into Hellenistic technique than our Western pages do, and its Saturn return course covers ground we cover in a few paragraphs.
- Practice, not just information. Meditations, journal prompts, rituals and a weekly rhythm turn astrology into something you do. We hand you a document. For a lot of people the document is the less helpful object.
- Editorial care at scale. Human-written horoscopes for twelve signs, daily and weekly, under a stated zero-AI policy, is a serious writing operation and it shows in the prose.
- Where the money goes. CHANI states that 5% of company revenue goes to FreeFrom, which supports survivors of gender-based violence. We don't have a giving policy yet, and saying we intend to have one isn't the same thing.
Four things we do better
- Price, and what it buys. The full multi-system reading costs nothing, and there's no subscription to remember to cancel. Star dedications are optional and one-time.
- More than one tradition, kept apart. Your Western chart and your BaZi chart are computed by different rules and they sometimes disagree about you. We show both and say where they conflict instead of blending them into a single flattering paragraph. Chinese against Western is the clearest example of two systems reading one birth differently.
- We show the arithmetic. Every page names its zodiac, house system and ayanamsa, and prints the placements it read. You can check a claim, or hand it to another astrologer who will disagree with our conventions on the record.
- We say what we won't answer. No death, illness or pregnancy predictions, and no house placements when your birth time is missing, since without a time the houses aren't known. Our list of refusals is at what we won't tell you.
That third one is the difference I'd defend hardest. A reading you can't check is a reading you have to take on faith in the reader, and I'd rather earn it by showing the working.
Where the two agree
Both use whole-sign houses, which is not a small overlap. CHANI explains its choice by pointing at Hellenistic practice and at the even, sign-shaped houses it produces; we chose it because it's the oldest system and needs no school-dependent cusp mathematics. A placement therefore lands in the same house on both platforms, so a chart you read here will match the houses your CHANI horoscope is talking about.
Both also treat a chart as a description and not a sentence. Neither will tell you a transit means something is going to happen to you, and neither runs the countdown-to-disaster style that fills a lot of astrology feeds.
And both are Western-tropical when reading a Western chart, so your Sun sign is the one you already know. Our Jyotish pages use the sidereal zodiac with the Lahiri ayanamsa, which will give you a different Sun sign, and those pages explain why before they show it to you.
Which one to open
If you want a daily relationship with astrology, guided by a person whose politics and warmth you like, subscribe to CHANI. That's what it's built for and it does it well. We can't give you that, and building a worse version of it wouldn't help anyone.
If you want to see your whole chart computed, compare what several traditions say about the same birth moment, or check a number someone has quoted at you, start with your AsterNym. It costs nothing to find out whether it tells you anything.
Plenty of people will use both, and nothing about them conflicts. Read the chart here, keep the practice there.
The follow-ups
- Is AsterNym a CHANI alternative?
- Only partly. AsterNym computes your birth chart across eight symbolic systems for free and shows the calculation behind each one, which covers the reference side of what CHANI offers. It has no audio readings, no meditations, no courses and no weekly reading written by a named astrologer, so it does not replace a CHANI membership for someone who values those.
- How much does the CHANI app cost?
- The US App Store listing showed $11.99 a month or $107.99 a year when we checked on 7 September 2026, alongside a limited free tier and free horoscopes on the website. Prices differ by country and store and change over time, so check the listing before subscribing.
- Do CHANI and AsterNym use the same astrology?
- For Western charts they share the two big conventions: the tropical zodiac and whole-sign houses, so placements land in the same houses on both. They diverge after that. CHANI works within Western astrology and leans on Hellenistic technique, while AsterNym also computes seven other systems including BaZi, Zi Wei Dou Shu and Jyotish, which follow their own rules and can disagree with the Western reading.
- Which one is more accurate?
- Nobody can answer that, including us. There is no accepted measure of astrological accuracy, so any claim that one app reads a chart better than another is opinion dressed as measurement. What can be compared is whether a platform states its conventions, shows its calculations and says what it will not answer, and those are checkable on both.
Mira Hale