Overview
Otty is an iPhone app that reframes menstrual cycle tracking as a shared experience rather than a solo logbook. Rather than stopping at predicting the next period or ovulation day, it delivers one plain-language tip each day along with the physiological reason behind it, and it sends a different, complementary message to the partner's phone. The product is aimed at couples who want to stay in sync across a cycle, as well as at individuals who prefer to track alone — Otty works the same whether the cycle belongs to the user or to their partner, and shared features stay quiet until a pair links up.
Key Features
- Phase-painted calendar — The month view is colour-coded across five named phases: Storm (Period), Chill (Follicular), Glow (Ovulation), Zen (Luteal), and Pre-Storm (PMS). Tapping a day shows the phase, what Otty expects, and what has helped before; both phones render the same month identically.
- Dual daily notifications — Each morning the cycle owner and their partner receive different messages. On Storm day 1, for example, the cycle owner gets an explanation of low estrogen and progesterone, while the partner gets a practical suggestion such as taking dinner or dishes off her plate.
- Structured daily check-in — A mood scale (Rough through Great) plus symptom toggles for cramps, headache, bloating, low energy, and cravings feed back into future predictions, with an inline explanation of what the logged symptom physically is.
- Partner playbook — A "Do today / Skip today" list generated from what was logged, such as charging the heating pad, pre-filling a water bottle, or avoiding plans that keep her standing.
- Relationship tools beyond tracking — Ninety pre-written Comfort Coupons delivered in phase packs, the Let's Roll gumball machine that picks a phase-matched evening plan, Deck Night (300 conversation cards across six decks), and a Comfort Menu where the cycle owner records once what helps in each phase.
- Privacy controls — Sharing is opt-in item by item, and the site describes the app as "private by default."
Use Cases
A couple sharing one cycle. Both partners install the app, enter the last period date, and see the same calendar. The partner's Today screen surfaces a short explanation of the phase and a concrete action, which reduces the need for the cycle owner to narrate how she feels.
A partner tracking solo. App Store reviewers describe tracking a wife's or girlfriend's cycle without her being on the app at all, using the calendar to know what each week means for her without having to ask.
An individual tracking her own cycle. The cycle owner gets daily phase-matched guidance on movement, food, and rest — for instance, walks and stretching plus iron-rich meals during Storm, or harder interval training during Glow.
What Sets It Apart
Most cycle trackers are single-user prediction tools with an optional read-only sharing feature. Otty treats the partner as a first-class user with their own message stream, its own guidance, and its own action lists, and it layers non-logging relationship features (coupons, conversation decks, date roulette, a written comfort menu) on top of the tracking core. The editorial approach also distinguishes it: every nudge is traced back to the phase guide published in full on the website, and the app explicitly positions itself as a companion rather than a clinician.
Pricing and Availability
Otty is free for the first seven days, then $5.99 per month or $39.99 per year, cancellable in Settings before day seven. It is currently iPhone-only; Android is handled through an email waitlist. The app ships in English, Spanish, and French, including all 300 conversation cards and all 90 coupons.
Value Proposition
Otty converts raw cycle data into a shared vocabulary — a calendar both people open, a daily tip with a reason attached, and a small set of rituals that keep a couple from drifting apart over the course of a month.
