Private beta · iOS via TestFlight

A quieter way to understand the people you love.

Stellr is a private relationship-reflection app. It uses astrology as a language for noticing — patterns, timing, and small practices for one real relationship at a time. Never proof, never a verdict, never a score.

Encrypted before storageAdults onlyPrivate by default
Emotional attunement Communication Attraction & intimacy Conflict & repair Trust & autonomy Shared life Growth Emotional attunement Communication Attraction & intimacy Conflict & repair Trust & autonomy Shared life Growth

How it works

Three steps, then a habit of noticing.

You do not need to know astrology. You need one relationship you care about and a few minutes of honesty.

Step one · uncertainty-aware

A missing birth time is information, not a blocker.

Stellr calculates a Moon range instead of inventing a position, leaves houses out where they cannot be known, and marks every later reading that inherits the doubt.

Birth date14 June 1991
Birth placeLisbon, PT
Birth timeUnknown

Moon is shown as a range, and houses stay hidden until a time is known.

Inside the app

Specific language for one relationship.

Fig. 01
Emotional attunementSupportive
CommunicationMixed
Conflict & repairDevelopmental
Blueprint · four more
Trust & autonomyShared life

Snapshot, then Blueprint

Three dimensions free and deterministic. Seven in the full Blueprint, each with the placements it came from — so you can disagree with it.

Fig. 02

Why do we circle the same argument on Sundays?

Shared logistics land on a dimension that already runs hot for you both. Name the week before you name the grievance.
Mercury □ MarsConflict & repair

Ask one live question

Answered from your chart, not a chatbot. Common questions are deterministic; AI is held back for genuinely rare ones — never trained on your words, never sent your journal without consent.

Fig. 03
Notice

“We both went quiet after the call.”

Practice

Twenty minutes apart, then one sentence each.

Check in · 3 days laterEasier. Kept the sentence short on purpose.

Moments and practices

A private journal with discreet check-ins, so a pattern you noticed once becomes something you actually did differently.

Composite chartMaya & Jonah
Composite circular midpoints
Composite astrology chart for Maya and JonahA circular midpoint chart with twelve zodiac sectors, aspect lines, and six labelled planetary placements. Jonah's Moon placement is time-uncertain.♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎☉︎☽︎☿︎♀︎16°♂︎13°♃︎
Trine · sextileSquare · oppositionTime-uncertain

EvidenceComposite Moon in the fourth house and a Venus–Mars square are what shaped the attunement reading — not a score, and not a prediction.

Jonah's birth time is unknown, so his Moon is shown as a range and every reading it touches is marked.

Connection Spaces

One room per relationship, with its work shown.

Each space holds the two charts, the composite, the dimensions, the timing prompts and everything you have written — versioned, so nothing quietly rewrites your history.

Directional synastry, both ways

How you meet them is not how they meet you. Stellr keeps A×B and B×A distinct, so the same aspect can read as steadying in one direction and demanding in the other.

Timing as an invitation

Transits arrive as windows for attention with a practice attached — never as an event forecast, and never with a date on which something is supposed to happen.

Accessible by construction

Every wheel has a list view. Every colour has a written label. Screen readers get the same chart you do, in the same order.

Sun through Pluto, Chiron, both nodes

Placidus houses by default, aspects, retrogrades and propagated uncertainty — calculated deterministically, so the same chart always produces the same reading.

Our stance

Never a score.

Astrology offers language for reflection — never facts about another person. Stellr will not rank your relationship, predict its ending, or tell you what someone else is really like.

No compatibility verdictsNo diagnosesNo predictionsNo feed, no followers
If something in a relationship is unsafe, the app says so plainly and points to real-world support instead of an interpretation.

Privacy

Private-first is a build decision, not a promise.

Birth details and reflections are among the most personal things you could write down. Stellr is engineered so that almost nothing about them is legible to anyone but you.

AES-256-GCM, applied in the app

Sensitive fields are encrypted before they are stored, so the database never holds readable birth data or journal text.

Owner-scoped by construction

Every read and write is scoped to you and tested across accounts. There is no shared space to leak into.

Face ID on your spaces

Lock the app behind biometrics, keep notifications discreet, and block screenshots of sensitive surfaces.

Export and durable deletion

Take everything you have written with you whenever you want. Deletion is durable and provider-aware, with a short recovery window before it is final.

Content-free analytics

First-party, counts only. We can see that a Blueprint was generated; we cannot see what it said or who it was about.

AI held to the edges

Reserved for genuinely rare questions, sent pseudonymously with retention off, moderated, and never used to train a model.

Plans

Choose your depth.

Start free with one Connection Space. Go deeper when a relationship asks for it — prices and introductory terms come directly from your store.

Free

Included

Enough to see whether reflection like this is for you.

  • One active Connection Space
  • Deterministic three-dimension Snapshot
  • Private journal, moments and practices

Connection Blueprint

One-time

One relationship, understood properly, kept for good.

  • Permanent seven-dimension Blueprint for one Connection Space
  • Full report export

Does not unlock Ask or additional Connection Spaces.

Subscriptions auto-renew unless canceled in the App Store or Google Play. Cancellation retains access through the paid period. Purchases restore on any device signed in to the same store account.

Questions

Honest answers first.

Is this a compatibility test?

No. There is no score, no percentage and no verdict anywhere in the app. Stellr describes qualitative dimensions — where a dynamic tends to run supportive, mixed or developmental — and always shows the placements behind the description so you can weigh it yourself.

What if I don’t know their exact birth time?

Say so. Stellr calculates a Moon range instead of a false position, leaves houses and the Ascendant out where they cannot be known, and marks every reading that inherits the uncertainty. Vagueness is labelled rather than smoothed over.

Do you use AI to write the readings?

Snapshots, Blueprints and common Ask answers are deterministic — the same chart always produces the same reading. AI is reserved for genuinely unusual Premium questions, sent pseudonymously with retention disabled, and it falls back to the deterministic answer if anything fails. Your journal is only ever included when you explicitly consent, one request at a time.

Does the other person need the app — or need to know?

Stellr is yours alone — there is no sharing, no invitations to accept and no shared feed. What you write is for your own reflection, which is exactly why the app never claims to tell you facts about anyone else.

Which chart system does it use?

Placidus houses by default and the True Node, with Sun through Pluto, Chiron, both nodes, the Ascendant, the Midheaven, aspects and retrogrades. Synastry is directional — A to B is kept separate from B to A — and composites are calculated properly rather than averaged for convenience.

Is there a web version?

No — deliberately. Stellr is mobile only. The iOS beta is available now, and Android testing is coming soon, so private material stays behind a device lock rather than an open browser tab.

Stellr

Begin with one connection.

Free to start, private by default, and honest about what astrology can and cannot tell you.

Adults only · Astrology as a reflective framework, not proof, diagnosis, or fate

iOS beta

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