Focused on understanding
MidCaelum approaches natal charts as symbolic structures for reflection, personality exploration, and understanding.
Astrology software for macOS
MidCaelum
Version 1.1 is now available.
Discover Dynamic Chart and ChartClock, two new features that bring the sky to life directly on your Mac.
Version 1.1 available now • macOS 12.6 or later • Apple notarized
- Dynamic Chart (new in 1.1)
- ChartClock (new in 1.1)
- Instant “Here & Now” chart for the current sky
- Works fully offline for calculations and built-in texts
- Available in 6 languages
Dynamic Chart - Available in MidCaelum 1.1
Symbolic chart exploration
MidCaelum helps explore the structure of astrological charts through signs, houses, aspects and core symbolic configurations. You can also customize all interpretation texts to match your own approach. Its purpose is to offer a nuanced reading of personality and symbolic dynamics.
Here & Now
Instantly display the current sky for your location and explore planetary positions in real time. A simple way to connect symbolic interpretation with the present moment.
Built for real use
It combines accurate calculations, a large built-in atlas, multiple house systems, and integrated interpretations in a polished desktop workflow.
Respectful by design
No account is required. Core chart calculation and built-in interpretation features work locally on your Mac.
See MidCaelum in action
Click any screenshot to view it in full size.
The charts shown in these examples use fictional data and illustrative portraits for demonstration purposes only.
Main features
MidCaelum combines precision, flexibility, and a user experience crafted specifically for macOS.
Calculation and chart tools
- Dynamic Chart (new in 1.1)
- ChartClock (new in 1.1)
- Instant “Here & Now” chart for the current sky
- High-precision astronomical calculations
- Tropical and sidereal charts
- Multiple house systems
- Major and minor aspects
- Retrograde motion indication
- Optional objects such as nodes, Black Moon and main asteroids
- Atlas and time-zone handling built into the app
Interpretation workflow
- Built-in interpretation texts stored locally
- Fully editable interpretation texts (customize every meaning)
- Available in 6 languages
- Works offline for core use
- Optional export workflow for external AI tools
- Optional web exploration of individual chart elements
- Designed for clarity rather than overload
Video
A short preview of MidCaelum in use.
Explore freely
MidCaelum can be used freely before unlocking the full version.
Usage without license
The application is fully functional, but without a license it is limited to charts for the year 2000. This allows you to discover the interface, workflow, and main features before unlocking all dates.
Simple unlock
Registration unlocks the full date range with a one-time purchase. No subscription is required.
Download MidCaelum
Version 1.1 is now available.
Signed and officially notarized by Apple
Native macOS application with a seamless installation experience.
Native macOS application with a seamless installation experience.
macOS 12.6 or later • Apple notarized • One-time purchase
Unlock MidCaelum
Unlock all dates and features with a one-time license (€39).
No subscription. No account required.
Secure payment via Stripe. Your license key will be sent by email within minutes.
About
MidCaelum is developed under PasHart Software.
It is designed with a background in mathematics, computer science, and astronomical software development, with a focus on clarity, interpretation quality, and user autonomy.
The project reflects a deliberate approach: offering a structured and thoughtful way to explore natal charts, with a focus on clarity, symbolic interpretation, and user autonomy.
MidCaelum in brief
Platform: macOS (version 12.6 or later)
Distribution: Direct download, notarized by Apple
Publisher: PasHart Software
Approach: symbolic and personality-oriented
Privacy: your data stays on your Mac. No account required.
Languages: English, French, German, Italian, Spanish, Portuguese (Brazil)
FAQ
Does MidCaelum require an internet connection?
No for its core use. Calculations and built-in interpretation texts are designed to work locally on your Mac.
What is the date range of MidCaelum?
In the licensed version, MidCaelum supports chart calculations from January 2, 1700 at 00:00 UTC to December 31, 2200 at 00:00 UTC. This range was chosen to ensure reliable calculation accuracy.
Is there a subscription?
No. MidCaelum is intended as a one-time purchase.
Can I try it before purchasing?
Yes. The app is fully functional before registration, with exploration limited to the year 2000 until registered.
Does MidCaelum send personal chart data to online services?
Core usage is local. Optional external workflows, when used, are initiated by the user.
How is my data handled?
MidCaelum is designed to work locally on your Mac. For more details, please read our Privacy Policy.