← All ideas IDEA-069 5.7 uk-ie family-logistics developed

Co-parenting that actually understands UK schools and NHS. £4.99/month — half the price of US apps and built for UK families.

Problem

I'm separated and my kids live between two homes. The US-built apps (Our Family Wizard, 2Houses) are expensive and court-flavoured, but the real problem is they don't know that my kid's UK school will only talk to one of us, and the NHS App proxy access is in 68 surgeries out of 6,300. So I'm still sending zillion text messages and missing things.

Audience

UK separated/divorced parents in the first 2 years post-separation with primary-school-aged children on shared 50/50 or 60/40 custody — including a niche of domestic-abuse-flagged separations needing court-admissible communication logs

Reasoning

Source signals

SIG-20260426-uk-ie-family-logistics-co-parenting-two-homes-app-search — "Best co-parenting app in UK for calendar & info sharing?" (DB-UK Community + reviews of 2Houses/OFW/Pick Up, RECURRING, HIGH)

What we ship

**Core features (MVP)**

Primary-contact mirroring: mark yourself as the school's primary contact → app auto-mirrors school-portal messages into a shared calendar visible to your co-parent
NHS App proxy primer: guide + status check (is your GP surgery one of the 68 pilots? if not — workaround)
Tone-rewriter: AI rewrites passive-aggressive draft into neutral tone before send
Handover confirmation SMS: tap-button → auto-log + SMS to other parent "Olivia handed over at school 15:35"
UK expense split: tax-free childcare receipts + 30-hours tracking + uniform/PE kit costs auto-split
Court-admissible export: timestamped, hashed PDF log of all messages and handovers (high-conflict cases)

**Primary user flow**

1. Sign up → invite co-parent (or start solo, partner joins later)

2. Setup: custody calendar, primary-contact assignments, expense split %

3. Daily use: handover-tap, message with tone-check, expense add

4. Premium upsell at day 14: court-admissible export + unlimited tone-rewriting

**What it looks like**

**Landing page**: "Co-parenting that actually understands UK schools and NHS. £4.99/mo, half the price of OFW." + comparison table
**Main app screen**: three tabs — Calendar (shared custody) / Messages (with tone-pre-send) / Expenses (UK-tagged)
**Output / notification**: SMS — "Mum confirmed: Olivia at her place 17:00. Next handover: school Friday 15:30."

**MVP build plan (14 days)**

Day 1-3: Postgres schema, dual-account auth, calendar
Day 4-7: messaging with tone-rewriter (Claude), handover SMS
Day 8-10: expense tracker with UK categories, hashing audit log
Day 11-12: Stripe, court-export PDF generator
Day 13-14: landing, CF Pages deploy, Mumsnet Lone Parents seeding

Reasoning

The SIG documents that 2Houses and OFW are recommended repeatedly with disclaimers — "expensive and US-flavoured". That's the textbook "underserved by foreign incumbents" pattern. UK-specific differentiators (primary-contact mirroring of school portals, NHS App proxy primer aligned to the Sept 2025 rollout, UK-tagged expense split, £4.99/mo undercutting OFW) provide a real moat. Stack-fit is clean. Competition is moderate (4-5 incumbents) but UK flavour gives differentiation.

Quick competitive read

**OurFamilyWizard** (CMP-IDEA-069-ourfamilywizard): £99-£239/yr per parent (double-pay), 25y, court-grade US incumbent, UK adoption real but niche (Cafcass-recommended for high-conflict). Wrong price class for amicable UK parents.
**2houses** (CMP-IDEA-069-2houses): £89/yr family flat, Belgian, calendar+expenses+journal, no UK-school/NHS awareness, lifestyle plateau (no funding since 2016).
**AppClose** (CMP-IDEA-069-appclose): was free → £7.99/mo since Jan 2026, US, 48K+ angry free users in transition. Limited UK presence but competitive pricing pressure.
**TalkingParents** (CMP-IDEA-069-talkingparents): £5.49/£12.49/£24.99/mo, US, free tier sunsets March 2026 — second migration wave.
**Cozi** (CMP-IDEA-069-cozi): £24/yr Gold, ~14% UK family-organiser share, general not co-parent specific. Owned by OFW since 2022 (so the OFW group covers both ends of the price ladder).

UK-incumbents direct fit: weak — none of the 5 know UK-school INSET/term-time, NHS App proxy quirks, tax-free childcare. Market density: medium (5 incumbents with ≥1% UK-share each, plus UK-built Pick Up + Amicable in the long tail). Wedge: UK-NHS-school awareness + £4.99/mo + non-evidentiary positioning. `competitive_pressure: 4` (raised from naive 5 because incumbents are wrong-shaped, not wrong-quantity). REGIONAL_VARIANT of IDEA-053 (US) and IDEA-060 (DACH) — same base concept, region-specific compliance + integration shape.

Initial pricing hypothesis

Free: 30 days + basic shared calendar. Premium **£4.99/mo/parent** (£89/yr — under OFW). Court-export tier £9.99/mo for high-conflict cases.

Distribution hypothesis

Mumsnet Lone Parents threads (50+/quarter, soft offer), 3-5 family-law solicitor partnerships with 10% rev-share, Reddit r/UKParenting and r/divorce_uk organic posts, BBC/Guardian PR hooked to the NHS App proxy gap, and Citizens Advice / relate.org.uk co-marketing.

Source signals (1)

SIG-20260426-uk-ie-family-logistics-co-parenting-two-homes-app-search

Score breakdown

market_size	6/10
pain_severity	6/10
build_feasibility	7/10
speed_to_revenue	6/10
regulatory_safety	5/10
competitive_pressure	3/10
recurring_revenue_fit	8/10

MVP stack

frontend	Cloudflare Pages + React + Tailwind
backend	Railway + FastAPI + Postgres
ai	Claude Sonnet 4.6 via API for tone-rewriting (passive-aggressive → neutral)
payments	Stripe Subscriptions
storage	Postgres + R2 (encrypted, audit-trail) for messages and receipts
external_integrations	['Twilio SMS for handover confirmations', 'Google Calendar OAuth', 'iCal export']

Estimated build: 14 days

Regulatory

soft_block

Blocks: D-011

D-011 (UK GDPR / Children's data, manual_review): App stores PII about minors aged ~4-12 (name, age, custody schedule, school, GP-surgery context, expense receipts, message history, handover timestamps) entered by parents. UK-GDPR + Data Protection Act 2018 set the age of consent at 13 (lower than EU GDPR 16, higher than COPPA 13 floor). The Children's Code (ICO Age-Appropriate Design Code, in force since Sept 2021) imposes 15 standards for "online services likely to be accessed by children" — applies even when collection is parent-mediated. Mandatory mitigations before launch: (1) DPIA before MVP launch (Children's Code Standard 2 — risk assessment is binding for solo build, not optional), (2) data minimisation: store first name + age band, NOT full DOB, NOT school name as free text (use LEA/postcode-derived school list), NOT NHS number, (3) age-appropriate Privacy Notice (Standard 4) — plain-English version + parent-facing version, (4) default high privacy (Standard 7) — no public profile, no third-party analytics on child-tagged data, (5) no nudge techniques (Standard 13) toward unsafe disclosure, (6) parental consent verification (email-plus-link or Stripe-card-on-file as proxy), (7) data export + deletion endpoints (Art. 15-17 UK GDPR) accessible per parent independently. Multi-Party-Consent (UK-specific, the headline consent risk for this IDEA): Under Children Act 1989 s.2(7), where two or more persons hold parental responsibility (PR), each may act alone, BUT the ICO's Children's Code and case law (Re G (Education: Religious Upbringing) [2012] EWCA Civ 1233 and subsequent) treat data-processing decisions about a child as needing both PR-holders' agreement when the second parent objects. Practical risk: high-conflict separations (a stated audience) — if parent A signs the child up and parent B objects, processing must stop and the data must be deleted in respect of the objecting branch. Build mitigations: (a) onboarding asks the inviting parent to declare PR status (sole vs shared) and to confirm whether the other parent is being invited, (b) "sole-PR" mode requires uploading a child-arrangements order (CAO) or parental-responsibility evidence — manual review queue, (c) revocation button per parent triggers immediate stop-processing + 30-day delete cascade for that parent's branch, (d) the OTHER parent's branch survives revocation only if they have independent PR + active processing, (e) ToS + Privacy Notice make multi-PR consent model explicit. This is the structural extra-build vs IDEA-053 (US, no PR concept). Cafcass / court-admissibility creep (the OFW pattern UK families fear): Cafcass is the statutory body advising the UK family court (Children Act 1989 s.16A safeguarding, s.7 welfare reports). The Family Justice Council's May 2025 guidance "Covert recordings in family law proceedings concerning children" sets a high bar for digital-evidence admissibility — and Cafcass increasingly references co-parenting-app logs in s.7 reports when parents put them forward. Positioning consequence: if we DO NOT carefully disclaim, this app drifts into evidentiary territory and inherits OFW-style obligations (immutable audit log, 7-year retention to match court limitation periods, hash-chain integrity, certified-export pipeline), which are out of scope for a £4.99/mo solo build. Mandatory ToS clauses: (1) "This service is intended for day-to-day co-parenting coordination ONLY. Records are NOT designed, audited, or guaranteed as evidence in family court proceedings, Cafcass safeguarding interviews, or s.7 welfare reports." (2) Retention max 90 days for free tier, 12 months for £4.99 Premium, 24 months for the £9.99 "court-export" tier — but even there, the court-export PDF must carry a header banner "Non-evidentiary export — provided as-is, no chain-of-custody guarantee". (3) NO call-recording feature in v1 (avoid the Family Justice Council May-2025 covert-recording perimeter entirely). The £9.99 tier is positioned as "your own organised diary, formatted for solicitor handover" — NOT "court-admissible". Without these guardrails the app inherits regulated-evidence-platform obligations. Practice of law / s.10A MFPA + LSA 2007 reserved activities: Co-parenting templates that suggest specific custody schedules, draft consent orders, or interpret child-arrangements language risk crossing into "reserved legal activities" under Legal Services Act 2007 s.12 (specifically the conduct of litigation reservation). Mitigation: NO template for "what your custody schedule should be" — only blank calendar with parent-defined patterns. NO AI-suggested wording for legal documents; the tone-rewriter operates ONLY on day-to-day messages ("school bag", "swap", "appointment"), with explicit hard-prompt and post-filter blocking any output that constructs legal-document phrasing. ToS includes: "This service does not provide legal advice. Consult a Solicitors Regulation Authority-regulated solicitor for advice on custody arrangements, child-arrangements orders, or financial remedy." NHS API / patient data (the wedge but also the trap): The NHS App proxy programme is at 68 GP surgeries (out of ~6,300) with national rollout planned for 2026 (Practice Business + Digital Health, Sept 2025). Public NHS-Login OAuth and CIS2 are NOT available to a solo consumer-facing co-parenting app — these are reserved for NHS-funded service integrations and clinical-systems suppliers. CRITICAL: Do NOT integrate with patient.nhs.uk or attempt screen-scraping of NHS App. Build approach is "NHS App proxy primer" only — surgery-list status check (is your surgery in the 68-pilot list, scraped from NHS Digital's public publication, refreshed weekly), and a how-to walkthrough for proxy-access setup. Manual entry of GP appointments by the parent. NO storage of NHS numbers, NHS-login tokens, or patient-record content. If the parent enters appointment notes, treat them as user-generated content with NORMAL personal data classification, NOT health data — UNLESS the parent enters a diagnosis/medication, in which case Art. 9 UK GDPR special-category triggers apply (DPIA mandatory, explicit consent flow, separate retention rules). Build a hard input-filter: appointment fields accept "GP appointment", "asthma review", "dental check" as free-text labels, but flag and warn against pasting clinical notes; offer a "redact before saving" prompt for any text matching ICD/SNOMED-like patterns. School data / Education Act 1996 + LEA fragmentation: UK schools (state, academy, free, voluntary-aided) all set their own term dates and INSET-day calendars. There is NO single national API. Build approach: (1) GIAS (Get Information About Schools, gov.uk public dataset) for school list lookup by URN — clean public data, no licensing concerns, (2) manual term-date entry by parent OR optional ICS feed import from school's public website (if the school publishes one) — parent-pasted, no scraping. NO scraping of school-portal logins (ParentMail / ClassDojo / SchoolGateway / Arbor) — both ToS-hostile and would put us in the data-processor role for school-controlled data, which is out of scope. The "primary-contact mirroring" feature in the IDEA must be reframed as "manual paste-from-email helper" — parent forwards the school email, app extracts dates via local LLM/regex and surfaces them in shared calendar. The marketing language "auto-mirrors school-portal messages" risks setting an expectation we cannot meet without invasive integrations — soften to "school comms forward-and-share" in copy. Domestic-abuse-flagged sub-segment (the niche the IDEA flags): If the app explicitly markets to abuse-survivors with "court-admissible logs", we cross into regulated-product territory — referrals + safeguarding obligations under Domestic Abuse Act 2021 + the SRA's Standards and Regulations on advising survivors. Mitigation: do NOT market as "for abuse cases". The £9.99 "structured export" tier is positioned for parents with high-conflict (not necessarily abusive) co-parenting who want organised records for their solicitor — solicitor is the regulated party, app is the input. In-app safety net: signposting to Refuge (0808 2000 247), Women's Aid, Citizens Advice, Galop (LGBT+), and the National Centre for Domestic Violence appears on every "court-export" view — no charge, no upsell. Region-specific advisory (UK + IE): UK-GDPR-distinct-from-EU-GDPR — post-Brexit data flows to EU recipients fall under the UK adequacy decision (Jun 2021, valid through Dec 2025 with renewal proposed) — confirm renewal status pre-launch. Ireland (if expanding scope to UK-IE region) follows EU GDPR (16 default, 13 minimum opt-in by Member State — Ireland chose 16 in DPA 2018 s.31). If onboarding Irish users, the consent age is 16, NOT 13 — gate by detected billing country. Stripe is fine for both. R2 storage: pin to UK or EU region, NOT US default. Twilio SMS: UK number-pool only (Twilio supports +44 origination); UK PECR opt-in required for the SMS handover-confirmation feature — capture inviting parent's express consent that the invitee has agreed to receive SMS, log it. Recommendation: BUILD WITH CONDITIONS. UK-GDPR + ICO Children's Code requirements add ~3 days to the 14-day MVP plan: D2 add multi-PR onboarding flow + per-parent revocation, D7 add input-filter for clinical-note redaction + tone-rewriter LLM guardrails (no legal-language synthesis), D11 add ToS + Privacy Notice with explicit non-evidentiary clause + DPIA artifact + Children's Code compliance statement. Solo build remains feasible. Re-review required if scope adds: direct NHS-Login integration, school-portal scraping, AI-suggested custody schedules, or call-recording. None of these are in MVP — keep it that way.

Competitors (5)

2houses — $89/yearly
2houses is a horizontal co-parent suite at middle pricing (£89/yr family vs our £60/yr single-payer). Their headline is "one account for the whole family". But it's calendar-first: the schedule wizard
AppClose — $7.99/monthly
AppClose was "the free alternative to OFW" for UK amicable families — but Jan 2026 they killed the free tier and pushed £7.99/mo (~$9.99 USD-equivalent). That creates a direct timing window: thousands
Cozi (Cozi Gold) — $24/yearly
Cozi is the "good enough fallback" for UK amicable-low-conflict separated families — the cheapest mainstream option (£24/yr Gold or free with ads). Our £4.99/mo Premium = £60/yr = 2.5× more than Cozi
OurFamilyWizard — $99/yearly
OFW is court-grade at £99-£239/yr per parent with double-pay = £200-£480 per UK family. Their ICP is Cafcass-involved, high-conflict, solicitor-driven. Our ICP is the opposite: amicable-ish UK parents
TalkingParents — $5.49/monthly
TalkingParents has the most aggressive monthly-billing strategy in the segment + a second sunsetting window in March 2026 (after AppClose's in January). Wedge: their Essentials at £5.49/mo = £66/yr —