Which apps work if only one parent joins?

There is a particular way to waste money on a co-parenting app: you pick one, you sign up, and then you find that the messaging you actually wanted does nothing until the other parent signs up too.

If your co-parent is uncooperative, unreachable, or simply refuses, that is the single most important thing to check before you pay. This page is a reference for that one question.

Quick answer: which co-parenting apps work if only one parent joins?

Some co-parenting apps let one parent use the calendar and records alone, but their messaging still requires both parents to create and link accounts. OurFamilyWizard and Custody X Change work this way, and AppClose documents a limited, request-scoped version. Civil Communicator requires both parents to subscribe before anything works at all, and TalkingParents, 2Houses, Coparently, and WeParent do not publicly document single-parent use. BestInterest is the only app here that can carry two-way messaging and calls with a co-parent who never joins, through Boundary Line — a BestInterest number they text and call from their ordinary phone with nothing to install, in the countries where BestInterest can issue a local number. AppClose comes closest, sending link-based requests to a co-parent who has not connected, but with no private number and no real-time messaging.

Account requirements at a glance

“Solo” can mean three different things

Marketing copy blurs these together, which is why the answer to “does it work alone?” so often turns out to be disappointing in practice. They are worth separating before you pay for anything.

1. Using the app’s own tools by yourself. Logging expenses, keeping a journal, building a schedule. BestInterest, OurFamilyWizard, and Custody X Change all document some version of this, and it is the weakest form of solo use because none of it involves the other parent.
2. Sending a link-based request to a non-member. AppClose Solo does this: a link arrives in the other parent’s ordinary text or email, and they can view or respond to that specific request without joining. It is request-scoped rather than an open channel.
3. Actually exchanging messages with someone who never joins. This requires routing the conversation through a channel they already use. Only BestInterest does it, by giving you a BestInterest number that carries ordinary texts and calls into the app. It depends on BestInterest being able to issue a number where you are, and the country selector during setup shows the current list. If your country is not on it, Boundary Line is not available to you, and BestInterest’s global alternative, Collaborative Mode, needs your co-parent to create an account and accept an invite — so it does not solve this particular problem.

If your co-parent has refused to download anything, only the third kind solves your problem.

App by app

BestInterest

Solo Mode works with no invite and no linked co-parent account, on the free plan: AI coaching, journal, calendar, tasks, expenses, and supported CSV exports. Boundary Line, on the Connect plan and above, adds a BestInterest number your co-parent texts and calls from their normal phone with nothing to install. On Protect and Protect Plus, those incoming texts also pass through Message Shield.

OurFamilyWizard

One parent can use the calendar, information bank, and expense log alone. In-app messaging requires both parents to hold linked accounts, and there is no private-number routing, so a co-parent who never signs up cannot be reached. There is no free plan, each parent pays separately, and there is no monthly billing option: the advertised $9.17/mo to $24.99/mo are monthly equivalents of a subscription that must be paid at least a full year upfront, so the cheapest way in is $110 for the year.

TalkingParents

Single-parent use is not publicly documented, so we make no claim about it. There is no private-number routing. The free plan ended on 30 March 2026, and paid tiers now run from $7/mo to $32/mo.

AppClose

“AppClose Solo” sends link-based requests and records to a co-parent who has not connected, delivered through their own text or email. That is genuinely more than most competitors offer, but it is not real-time moderated messaging and there is no private number. AppClose ended its free tier on 1 January 2026 after roughly ten years, and now costs $8.99/mo in-app, $7.99/mo on the web, or $98.99/yr.

Civil Communicator

Both parents must subscribe before anything works, so there is no single-parent path at all. Messages are reviewed by human staff between 8am and 8pm daily, which is also why delivery can be delayed. Pricing is not publicly displayed.

2Houses

Single-parent use is not publicly documented. The website sells a single per-family plan at $169.99/yr, so only one parent pays. App Store pricing differs and includes a monthly in-app option, so the annual prepayment is not the only route. There is no free plan.

Coparently

Single-parent use is not publicly documented. There is no free plan. Note that an unrelated app with a similar name on the App Store is a different product, so check that you are comparing coparently.com.

Cozi

Cozi is a general family organizer rather than a co-parenting app. A single user can run the calendar and lists, but there is no co-parent messaging, custody schedule, expense split, or court-ready record, so the account-requirement question does not really apply. There is a free tier, plus Cozi Gold at $39/yr.

WeParent

Single-parent use is not publicly documented. There is no free plan and no in-app calling, and pricing is per family from $19.99/mo. WeParent is in the process of rebranding as WeParent by SupportPay, so confirm current details before relying on them.

Custody X Change

Scheduling, parenting plans, and parenting-time calculations all work for one parent, which makes it a capable solo tool for building a plan. Messaging requires both accounts to be linked and paid, and there is no private number. There is no free plan; a limited guest version has no time limit but limits how much you can save and excludes printing, exporting, and calculating. Paid tiers run from $10/mo to $40/mo, and its mobile apps are not distributed through the app stores.

How we checked

We reviewed every provider on this page on June 18, 2026, against their official pricing and feature pages wherever those are publicly readable. Two are not: Coparently renders its pricing in JavaScript, so its details are corroborated from independent reviews rather than confirmed on the official page, and WeParent’s come from its App Store listing because its own site was unreachable. Where a provider does not publicly document single-parent behaviour, this page says “Not confirmed” rather than inferring it. Plans, prices, and features change, and a provider may add single-parent support at any time.

For a full feature-by-feature breakdown beyond account requirements, see the side-by-side co-parenting app comparison.

Frequently asked questions

Do both parents need to create an account for a co-parenting app?

For messaging, yes on every alternative here that documents the answer: OurFamilyWizard, Custody X Change, Civil Communicator, and AppClose’s in-app messaging all require it. OurFamilyWizard and Custody X Change both let one parent use the calendar and records alone, but their in-app messaging only works once both parents have created and linked accounts, and Civil Communicator requires both parents to subscribe before anything happens. BestInterest is the exception: Solo Mode needs no invite and no linked account, and Boundary Line gives your co-parent a number they can text from their ordinary phone without creating anything, in the countries where BestInterest can issue a local number.

Do both parents have to pay for a co-parenting app?

On most platforms each parent pays separately, so a co-parent who will not pay is the same obstacle as a co-parent who will not sign up. OurFamilyWizard charges per parent and bills at least a year upfront with no monthly option, and Civil Communicator requires both parents to subscribe. Custody X Change is mixed: its lower tiers are per parent, but the $40/mo Family plan covers accounts for both parents in one price. 2Houses and WeParent bill once per family instead. BestInterest’s free plan covers Solo Mode, and only the parent using the app pays for Boundary Line.

What can I do if my co-parent refuses to sign up for anything at all?

You have two separate needs: keeping your own records, and actually reaching them. BestInterest, OurFamilyWizard, and Custody X Change all document records or scheduling one parent can maintain alone, and AppClose documents its own partial form of solo use. Civil Communicator requires both parents to subscribe before anything works, Cozi has no co-parenting tools to use alone, and TalkingParents, 2Houses, Coparently, and WeParent do not publicly document single-parent use. Only BestInterest can also carry the conversation, because Boundary Line routes an ordinary text or phone call through a BestInterest number, where we can issue one for your country. AppClose comes closest by sending link-based requests to a co-parent who has not connected, but there is no private-number routing and no real-time messaging.

Does using a co-parenting app alone still produce useful records?

With BestInterest, yes: journal entries you write on your own side are timestamped on every plan, and the free plan can export them as CSV. Structured PDF Verified Reports, with an optional Certificate of Authenticity for an attorney or mediator, start on Connect. Task and expense exports are a shared-family feature, so in Solo Mode those records stay in the app. Elsewhere it varies. OurFamilyWizard and Custody X Change both support solo record-keeping, though Custody X Change’s limited guest version limits how much you can save and excludes printing, exporting, and calculating, and Cozi keeps no court-ready records at all. What a solo account cannot do on the other apps is capture the other parent’s messages, because those never enter the system unless that parent joins; BestInterest is the exception once Boundary Line is on, since their texts route through the app.