A packing list that knows the kid switches homes Friday at 6 — auto-resets, auto-pings the other parent when each item is packed.

Source signals

• **SIG-20260426-us-family-logistics-two-homes-packing-list** — "Do you forget the same thing over and over again when you transition?"; 5 independent product/printable attempts
• **SIG-20260426-us-family-logistics-blended-family-cross-household-orchestra** — "kids' schedule spans two households with potentially different tools"
• **SIG-20260426-us-family-logistics-coparent-app-fragmentation** — none of the existing apps fit; people cycle through 3-5 tools

What we ship

**Core features (MVP)**

• **Per-child packing list** — each item has status (Packed at A / Packed at B / Forgotten / Permanent at A)
• **Custody-schedule integration**: set a base pattern (alt weeks / 2-2-3 / 50-50) — app knows transition timing; checklist auto-resets 24h before handoff
• **Two-tap pack**: kid (or parent) taps "packed" — other parent gets push "✓ riding helmet packed"
• **Forgot-it logger**: tap "mom forgot it" creates permanent annotation; after 3 instances, suggest "buy a duplicate?"
• **Both-houses view**: map of where each item lives now (where the tablet is, where the sports bag is) — read-only for other parent
• **Granular sharing**: both parents see list; opt-in for NEW partner visibility (for blended families — bridges to IDEA-056)

**Primary user flow**

1. Landing → "Stop driving across town Wednesday morning" → add child + invite co-parent

2. Custody-schedule setup (3 preset templates + custom)

3. Build packing list (seed defaults: school, sports, comfort)

4. Thursday evening push: "Maya goes to dad's tomorrow — pack list ready"

5. Pack each item — partner gets push in real-time

**What it looks like**

• **Landing page**: hero "Forgot the riding helmet again? Stop the cross-town runs." + 2-house split-screen mockup
• **Main app screen**: per-kid card "Maya — At Mom's. Switches Friday 6 PM" + countdown + packing-progress bar
• **Item card**: photo + status (here/there) + last-confirmed-by + "✓ Packed" tap

**MVP build plan (7 days)**

• Day 1-2: backend (kids, custody_schedules, packing_items, transitions, notifications)
• Day 3-4: React PWA — main screen, item-detail, transition-timeline
• Day 5: Web Push notifications + custody-schedule scheduler
• Day 6: Stripe (free 2 kids, premium up to 6 + multi-household), landing
• Day 7: deploy CF Pages + Railway, soft-launch r/coparenting + r/Stepparents

Reasoning

The pattern is documented by 5 distinct sources (Varannan Vecka, Two Homes Tracker NJ printable, Narcissistic Man "Two-Home Backpack System", laemerslaw, r/coparenting). **Existing co-parent apps don't model transitions as first-class events** — OFW, 2houses, Cupla, Calendara, Clearly all have calendar and messaging but NOT packing-list-tied-to-schedule. Varannan Vecka (Sweden) is the only one with this feature, but it's a feature inside a big app — not standalone.

Wedge: **single-purpose, schedule-aware packing list** — separate from horizontal coparent-apps. PWA instead of native is the critical stack-fit (web push is enough, no app stores). 7-day build is realistic.

Market sizing: ~30% of US kids in shared custody = ~6-8M kids. ~70% of those families are amicable — TAM ~5M households. ARPU $48/yr → SAM ~$10M-$30M in US.

Risk: OFW or Cupla add this feature. Defense: single-purpose UX and no-court-bloat copywriting. It's also a natural complement to IDEA-056 (blended-family calendar) and we can cross-sell.

Quick competitive read

**Stage 5b validated (2026-04-26): 5 competitors profiled, market_density=medium, no direct competitor — strong wedge holds.**

• **OurFamilyWizard** (2001, ~$11.6M ARR, 62 employees, acquired Cozi 2022) — court-grade $99-300/yr per parent. Their blog explicitly says "minimize packing" — they know the problem and won't build the feature (it conflicts with evidentiary positioning). Largest player by revenue, but pricing is 5-10× our target.
• **AppClose** (2015, Austin TX, 48K+ five-star reviews) — was the free OFW alternative; killing free tier in 2026 → $8.99/mo. Reddit r/DivorcedDads thread shows real anger. Perfect timing window: tens of thousands of price-sensitive amicable users churning RIGHT NOW.
• **TalkingParents** (2012, FL) — cleanest monthly tiers ($7/$16/$32), free web-only tier sunsets Mar 30, 2026 (same window as AppClose). Floor $7/mo = 2× our $4/mo and still no packing-list.
• **2houses** (2011, Belgium, $2.9M ARR, 5 employees, no funding since 2016) — flat $99/yr family pricing (smart — kills the partner-doesn't-pay objection), but EU-focused, US traction marginal, no packing feature. Lifestyle plateau.
• **PackPoint** (2014, solo dev, ~2M lists/yr) — same DNA but trip-mode only, not custody-aware. Reference UX (weather-aware, activity-aware suggestions) we can borrow. Premium IAP $2.99 lifetime — doesn't compete on recurring revenue.
• **Varannan Vecka** (Sweden) — only true feature parallel ("packing list with cross-house notification"), but Sweden-only and US traction = 0.
• **Cozi / FamilyWall** — horizontal family organizers; Cozi now owned by OurFamilyWizard (May 2022) but still no schedule-aware packing primitive.

**Wedge confirmed:** 0 US-direct competitors at $4-6/mo single-purpose price band. Two big incumbents (AppClose + TalkingParents) are simultaneously sunsetting free tiers in 2026 = unique entry window. Defensibility against OFW comes from positioning (amicable, not court-grade) and pricing (10× cheaper). Risk: 2houses or AppClose adds "checklist per event" as a low-cost feature — defense is single-purpose UX + ToS no-court-disclaimer + Web Push (PWA) integration speed.

Initial pricing hypothesis

Free: 1 kid, 1 list, 30 transition history. **Premium $4/mo or $36/yr** (up to 6 kids, multi-household, photo attachments, AI suggestions). One-time **$49 lifetime** option for anti-subscription audience (large segment in co-parenting demo).

Distribution hypothesis

1. **Reddit organic**: r/coparenting, r/Stepparents, r/divorce — pegged to "I forgot the helmet" stories. Format: "Built this so my kid stops forgetting things between houses."

2. **Family-law attorney referrals**: cold-email 200 mediators/family-law attorneys — they're already explaining transition logistics.

3. **TikTok divorce / co-parent niche**: real co-parent videos using app → organic.

4. **ProductHunt**: niche but engaged audience.

5. **Cross-link with IDEA-056** (blended-family calendar) if both ship.