What it is
TimePassages is the astrology software flagship from Astrograph Software, run by Henry Seltzer, a longtime modern psychological astrologer based in Santa Cruz, California. The first desktop version shipped in the late 1990s for Mac and Windows, with iOS following in 2010 and Android in 2014. Astrograph's broader site, astrograph.com, is the largest educational astrology hub in the field, with roughly 21,500 indexed keywords and 528,000 monthly organic visits, driven mostly by Henry's planetary and aspect interpretation pages at /learning-astrology/. TimePassages exists in 3 tiers (Basic, Standard, Pro) and is the only astrology program that ships proprietary modern-psychological interpretive text written by a single named author over 25 years.
Who uses it
TimePassages is the program that students of modern psychological astrology, evolutionary astrology, and the Steven Forrest tradition reach for during their first 5 years of study. The interpretive text is its anchor. For a learner moving from beginner books to running their own charts, reading TimePassages' transit and natal text is the cheapest tutoring on the market. Working practitioners use it less often as a daily driver and more often as a reference library they keep installed for the text.
Headline features
- Henry Seltzer's interpretive text for every planet, aspect, transit, and progression, the largest in commercial astrology software
- Cross-platform: macOS, Windows, iOS, Android from 1 vendor
- Reliable Swiss Ephemeris calculations
- Transit graph with predictive timing view
- 3-tier pricing (Basic, Standard, Pro) at $0, $200, and a separate iOS Pro add-on
- Modern psychological framing built into every output
Headline price and 5-year cost
The Standard desktop license is $200 one-time. The iOS Pro add-on runs about $50, and major version upgrades roll out every 4 to 5 years at roughly $80. Working across desktop and iOS with 1 upgrade in the 5-year window comes to $400 to $480 total.
Where Astrolium does it differently
TimePassages and Astrolium solve different problems. TimePassages is the learning library. Astrolium is the paid client workspace. The honest summary: nothing Astrolium ships replaces Henry Seltzer's interpretive depth for a student astrologer in years 1 to 5 of study. The text is genuinely great, written by a working practitioner, and TimePassages remains the recommendation for self-study.
What Astrolium adds, and TimePassages does not, is the practitioner surface for paid client work: CRM with intake forms and session notes, shareable client links the client opens in their own browser, Stripe invoicing built in, white-label PDF reports with custom branding, and the live predictive scrubber for profections and Zodiacal Releasing. The other gap is Hellenistic technique support. TimePassages ships modern psychological astrology, not the time-lord stack (profections, ZR, Firdaria, Decennials), all of which Astrolium ships as first-class.
For a practitioner with paying clients, the typical pattern is to keep TimePassages installed for the interpretive text and use Astrolium for the actual session work. The 2 tools live happily side by side.
If you are moving from TimePassages
The full walkthrough (interpretive depth comparison, technique coverage, migration notes) lives at TimePassages vs Astrolium. TimePassages chart files import via CSV birth-data export; the team supports the migration in a free 45 minute session. For Astrolium's pricing and the features hub, go directly to those pages.
Start the migration wizard to walk through the transition together.