Coming Soon — Join the Waitlist

OG

Only Gentleman

The first cycle tracking app designed for men. Learn her phases, understand her needs, and show up like the man she deserves.

Join the Waitlist See Features
✦ What OG Does

Everything a gentleman
needs to truly understand her

Four powerful tools, one elegant app. Built for men who want to show up better in every relationship.

💬
Ask OG — AI Chat

Ask anything about her cycle and get a real, intelligent answer in your chosen voice — smooth, devoted, scientific, or straight from a best friend. Powered by Claude AI.

✦ Pro Feature
🔗
Couples Mode

Invite her to sync. She gets her own companion view showing what you know about her cycle. Full transparency builds trust — and makes OG a relationship tool, not just a tracker.

✦ Pro Feature
🎁
Gift Engine

Phase-matched gift ideas and date suggestions delivered at exactly the right moment. Know what she craves before she has to ask. The right gesture at the right time changes everything.

✦ Pro Feature
🔔
Smart Notifications

Get ahead of every phase — PMS windows, ovulation peaks, period starts. Know what's coming before it arrives and show up prepared every single time.

✦ Pro Feature
🎭
4 Persona Voices

Choose how OG speaks to you. The Ladies Man, The Devoted Partner, The Scientist, or The Best Friend. Different voice, same intelligence — tailored to how you think.

Free + Pro
👤
Discreet Profiles

Track multiple women with custom nicknames. Private, secure, and completely discreet. The more cycles logged, the more accurate the predictions become over time.

Free + Pro
✦ The Knowledge

Her cycle has
four chapters.
You should know all of them.

Most men know nothing about the female cycle beyond its existence. OG changes that — with intelligence, care, and zero judgment.

🌑
Menstrual
Days 1–5

Rest and comfort. Low energy, high need for warmth and presence.

🌒
Follicular
Days 6–13

Rising energy. She's social, creative, and open to new experiences.

🌕
Ovulation
Days 14–16

Peak magnetism. Confidence at its highest. Fertility window active.

🌖
Luteal
Days 17–28

PMS window. Needs stability, patience, and consistent presence.

✦ Simple Pricing

Free to start.
Pro to master it.

Free Forever
$0
Always free, no credit card needed
  • ✦ Cycle day tracking
  • ✦ Current phase display
  • ✦ Days to period & ovulation
  • ✦ 1 discreet profile
  • ✦ Choose your persona voice
  • — AI Chat (Ask OG)
  • — Daily insights & tips
  • — Gift Engine
  • — Couples Mode
  • — Smart notifications
Join Waitlist
OG Pro
$49.99
per year · or $6.99/month
  • ✦ Everything in Free
  • ✦ AI Chat — Ask OG anything
  • ✦ Daily personalized insights
  • ✦ Phase-matched Gift Engine
  • ✦ Couples Mode — invite her
  • ✦ Smart phase notifications
  • ✦ Unlimited profiles
  • ✦ Goal tracking (TTC / avoiding)
  • ✦ Cycle accuracy engine
  • ✦ All 4 persona voices
Join Waitlist
Be among the first gentlemen
✦ Early Access

Join the waitlist.
Launch is coming.

Be first in line when OG launches. Early members get Pro access at a founding member rate — never offered again.

✦ You're on the list, Gentleman. We'll be in touch.

No spam. Ever. Unsubscribe any time.

✦ The Mission
"The best relationships are built on understanding — not guesswork."

Women spend decades navigating their cycles alone. Men are rarely given the tools — or the invitation — to understand what's actually happening.

OG exists to change that. Not to be intrusive or transactional, but to help men show up with awareness, empathy, and the right gesture at the right moment.

This isn't about control. It's about connection.

28
Days in her cycle
4
Phases to understand
∞
Impact on your relationship
0
Apps like this before OG
Menstrual Phase
"Show up. Say less. Mean more."
Days 1–5
Follicular Phase
"Her best self is returning. Meet her there."
Days 6–13
Ovulation Phase
"Peak energy. Peak connection. Be present."
Days 14–16
Luteal Phase
"Patience isn't passive. It's powerful."
Days 17–28
✦ Questions

Frequently asked
by gentlemen.

Does she need to know I'm using this app? +
That's entirely up to you. Many men use OG privately to better understand and support the women in their lives. The Couples Mode feature allows you to optionally invite her to sync — she sees exactly what you see, building full transparency. Either approach is valid.
How accurate are the predictions? +
OG starts with standard 28-day cycle averages and becomes more accurate as you log more period dates over time. The more data you add, the more the predictions adapt to her specific cycle. Most women's cycles vary between 21 and 35 days, which OG accounts for.
Can I track more than one woman? +
Yes. OG supports multiple discreet profiles, each with a custom nickname. Free accounts include one profile. Pro accounts include unlimited profiles, all completely private and separately managed.
What is the AI Chat feature? +
Ask OG is a live AI assistant powered by Claude. You can ask anything — "what does she need today?", "is this a good time for a serious conversation?", "why is she more emotional this week?" — and receive a thoughtful, cycle-aware answer in your chosen persona voice. It's like having a knowledgeable friend available 24/7.
Is my data private and secure? +
Absolutely. All profile data is stored locally on your device by default. We do not sell, share, or monetize personal data. OG is built on a foundation of discretion — your information stays yours.
When will OG be available? +
OG is currently in final development for iOS and Android. Join the waitlist to be among the first notified at launch. Early waitlist members will receive exclusive founding member pricing — a one-time rate that will never be offered again.
What does "trying to conceive" vs "avoiding" mean in OG? +
OG lets you set your relationship goal upfront. If you're trying to conceive, the app highlights fertile windows and optimizes guidance accordingly. If you're avoiding pregnancy, it flags high-risk periods and adjusts recommendations. If you simply want to understand her better, the app focuses on emotional and relational intelligence throughout the cycle.
✦ Legal

Privacy Policy

Last updated: 2025. Only Gentleman ("OG", "we", "us") is committed to protecting your privacy.

Information We Collect

OG collects only the information you choose to provide: email address (for waitlist and account creation), cycle dates and profile nicknames you enter, and app usage data to improve the product. We do not collect real names, locations, or payment information directly — payments are processed securely through Apple and Google.

How We Use Your Information

Your data is used solely to provide and improve the OG app experience. Cycle data is used to generate predictions and personalized insights. Email addresses are used only for product updates and launch notifications. We do not sell, rent, or share your personal information with third parties for marketing purposes.

Data Storage & Security

Profile and cycle data is stored locally on your device by default. If you use Couples Mode or cloud backup features, data is encrypted in transit and at rest. We use industry-standard security practices to protect all stored information.

Third-Party Services

OG uses Claude AI (Anthropic) to power the Ask OG chat feature. Queries sent to this feature are processed by Anthropic's API in accordance with their privacy policy. No personally identifiable information is included in AI queries. We may include affiliate links to Amazon products in the Gift Engine — clicking these may result in a commission to OG at no additional cost to you.

Your Rights

You may request deletion of your account and all associated data at any time by contacting us at contact.onlygentleman@gmail.com. You may opt out of marketing emails at any time via the unsubscribe link in any email we send.

Children's Privacy

OG is intended for users 18 years of age and older. We do not knowingly collect information from minors.

Contact

For any privacy questions or data requests, contact us at: contact.onlygentleman@gmail.com