What you can expect from this overview
Included are apps, web communities, registries and trusted concierge/aggregator services. For each entry, you will find availability (App/Web), the main focus (Known Donor, Co-Parenting, Community, Concierge), and a direct, simple link to the homepage. We also highlight useful tools for communication after matching.
What users really look for in 30–60 seconds
Check five key things per platform: 1) accessibility and contact details 2) verification and medical proof 3) transparent pricing model 4) communication and export options 5) reach and filters in your region. Once those are clear, you can make a quick go/no-go decision.
Practical selection checklist
- Real accessibility: working homepage, verifiable contact, up-to-date content.
- Verification & documentation: clear rules for photo/ID checks and medical tests. Zero verification is a red flag.
- Transparent pricing: what’s free, what’s paid (Premium/Boost/Concierge), how to cancel easily.
- Communication & export: in-app chat, retrievable logs/exports for later evidence.
- Reach & filters: enough profiles, useful filters (distance, donation type, family model) – usable internationally.
Active, verified platforms 2025: apps, communities, registries and services
Apps & cross-platform services
RattleStork
- Available on: iOS, Android, Web
- Focus: private donation (known donor), transparent profiles, direct chat
- Start: rattlestork.org

Y factor
- Available on: iOS, Android, Web
- Focus: app-based matching with private donors
- Start: yfactor.app

Just a Baby
- Available on: iOS, Android
- Focus: sperm/egg/embryo donation, co-parenting, surrogacy listings
- Start: justababy.com

Let’s Be Parents
- Available on: iOS, Android, Web
- Focus: donor search, co-parent matching
- Start: letsbeparents.com

CoparentaLys
- Available on: iOS, Android, Web
- Focus: co-parenting/donor matching with international reach
- Start: coparentalys.com

Web communities & forums
PollenTree
- Available on: Web
- Focus: community and search for donor matching and co-parenting
- Start: pollentree.com
CoParents
- Available on: Web (mobile-friendly)
- Focus: international profile database and search
- Start: coparents.com

Pride Angel
- Available on: Web
- Focus: LGBTQ+-friendly matching; search and messaging after registration
- Start: prideangel.com

Co-ParentMatch
- Available on: Web
- Focus: known donor/co-parenting matching; guides and kits
- Start: co-parentmatch.com

Registries & networks
Donor Sibling Registry (DSR)
- Available on: Web
- Focus: registry for donor-conceived people, matches between half-siblings and donors
- Start: donorsiblingregistry.com
Known Donor Registry (KDR)
- Available on: Web
- Focus: community/registry for known donor matching (sperm/eggs/embryos)
- Start: knowndonorregistry.com
Concierge, agencies & aggregators
Modamily
- Available on: Web
- Focus: co-parenting network, paid concierge search for donors/co-parents
- Start: modamily.com

Expecting.ai
- Available on: Web
- Focus: aggregation and filtering of donor/surrogacy offers
- Start: expecting.ai
The Seed Scout
- Available on: Web
- Focus: curated manual matching for known donors (concierge)
- Start: theseedscout.com
Donor Concierge
- Available on: Web
- Focus: paid aggregator/concierge for donor and surrogacy search
- Start: donorconcierge.com
Specialised niches
Gayby
- Available on: App/Web
- Focus: matching with gay donors for LGBTQ+ families and single women
- Start: gayby.com
After matching: communication and documentation
For agreements and future proofing, co-parenting apps can be helpful. Examples: BestInterest (AI-filtered messaging, immutable logs) or OurFamilyWizard (court-admissible logs, calendar, expense tracking). These tools are not for matching, they help with order and accountability.
Red flags: when to move on
- No contact/imprint, outdated content or inactive social media.
- Paywall without clear feature list or unclear cancellation policy.
- Zero verification combined with risky recommendations.
- Exaggerated promises (100% guaranteed, completely anonymous forever).
- No reporting/moderation against fake profiles or misuse.
Minimal workflow for a safe start
- Create an honest, concise, privacy-minded profile.
- Quick check: homepage active, contact available, content maintained.
- First contact via in-app chat; then a short video call before any meeting.
- Before meeting: verify recent medical documentation on both sides.
- Keep chats, proofs and agreements organised (screenshots, PDFs, exports).
Not a full how-to, but a practical path that works internationally.
How much does it cost
Many communities offer a free basic tier. Premium functions (filters, boosts, concierge) typically cost around £8–£50 per month; curated concierge services are much higher. Always check prices, features and cancellation terms before paying.
Conclusion
In 2025, there is a small but reliable range of active international platforms for private sperm donation and co-parenting. Use this list as a starting point, follow the checklist carefully, and document every step. It helps you find suitable profiles faster and reduce risks, wherever you live.





