soulwiseThe 4-Tier Push Notification Fatigue Model
How Soulwise's 4-tier push fatigue model uses a rolling 14-day open-rate window to demote, anchor, or pause notifications before users opt out for good.
soulwiseAstrology Without Jargon: An Experiment With 14 Chips and 160 Characters
What happens when you build an astrology app that does not use astrology jargon by default? Soulwise tried 14 chips, 160-character responses, and a jargon-mode toggle.
soulwiseBayesian Cycle Modeling Explained: Why We Show Sigma, Not a Date
Bayesian cycle modeling uses a Gaussian prior plus your logged cycles to produce a probability range, not a single date. Here is the math, in plain English.
soulwiseCo-Star Alternative Without the Trolling: A Warmer Astrology App
Looking for a Co-Star alternative that drops the deadpan provocation? Soulwise keeps the personalisation, swaps the trolling for warmth, and adds a daily check-in ritual.
Cycle Tracker for Non-Binary and Gender-Diverse Users (2026 Guide)
A cycle tracker for non-binary users should not require feminine framing, should let you skip menstrual data, and should keep working through hormone therapy. Here is what to look for.
Daily Check-In App vs Mood Tracker vs Journal: Which Fits Your Life
A daily check-in app is faster than journaling, richer than a mood tracker, and built for sustainable habits. Here is the honest comparison.
soulwiseFlo Alternative: A Privacy-First Cycle Tracker (GDPR Guide)
Looking for a Flo alternative that takes GDPR Article 9 seriously? This guide compares cycle-tracker privacy practices and shows what Soulwise does differently.
soulwiseLetters From Past Self: An Anniversary Journal App Feature Design
How a daily check-in app can re-present a past response as an anniversary letter from a past self - and why that feature is harder to design well than it looks.
Period Tracker With No Medical Claims: What That Actually Means
A period tracker with no medical claims logs your cycle as pattern data, not as a clinical record. Here is what to look for, why it matters, and how Soulwise frames it.
Privacy-First Period Tracker Post-Roe: What To Look For in 2026
After the Dobbs decision, US users started reading cycle-tracker privacy policies for the first time. Here is what to look for - this is product criteria, not legal advice.