Which app should you choose to manage child expenses between separated parents?

Pharmacy receipts piling up, a school trip invoice paid upfront by one parent, club fees covered by the other: after a separation, tracking the children's expenses quickly becomes a part-time job. Several apps promise to take it off your hands, from full co-parenting suites to dedicated tools. They do not all answer the same need, and the price gaps are real. This comparison walks through the criteria that actually matter, the main solutions on the market and how to choose for your own situation. Transparency first: Kidivi publishes this blog. We therefore present our own app too, but we play the comparison fair, competitors' strengths included.

Why the notebook and the spreadsheet quickly hit their limits

Many parents start with a notebook, a WhatsApp group or a shared spreadsheet. It works for a few weeks, then the cracks appear: a lost receipt, a forgotten line, an amount disputed six months later with no dated proof to settle it. A spreadsheet also cannot tell you whether an expense is covered by child maintenance or belongs to the costs you share, and it will not calculate the balances according to your split ratio without formulas to maintain.

Above all, a file that anyone can edit carries little evidential weight: nothing shows the line was entered on the day of the expense rather than the night before a hearing. We covered this in detail in our comparison spreadsheet or app: the spreadsheet is a decent starting tool, but it shows its limits as soon as the volume of expenses grows or the trust between parents shrinks.

The criteria that actually matter

Before comparing logos and prices, write down your concrete needs. Seven criteria make the difference in daily use:

• Separating ordinary from extraordinary expenses. Whether your paperwork calls them extraordinary or exceptional expenses, most parenting arrangements and court orders distinguish everyday costs covered by maintenance from the larger costs to be shared between parents. An app that ignores this distinction leaves you sorting by hand, line by line. Our article on ordinary or extraordinary expenses explains why this sorting shapes everything else.
• Dated, tamper-proof evidence. A receipt photographed on the day of the expense, time-stamped and technically locked, weighs far more than a spreadsheet line. This becomes decisive if the file ends up in front of a judge, as our guide on proving child expenses in court shows.
• Automatic calculation based on your split ratio. 50/50, 60/40, 70/30: your order or agreement sets a ratio, and the app should work out who owes what to whom, no calculator needed.
• An export you can use with a solicitor or a mediator. A clean, chronological document, receipts included, ready to be added to a file.
• A price per family file, not per parent. Some apps charge each parent separately: the real cost doubles if both pay. Check who pays what before committing.
• How it works if the other parent does not take part. This is the blind spot of most solutions: they assume two active accounts. In many real situations, only one parent wants to keep records.
• Respect for your children's data. Medical costs, school, activities: this data is sensitive. Hosting in Europe and the absence of advertising are not details.

A tour of the solutions

One useful caveat: the prices and features below are those observed in early 2026, to be checked on the publishers' official sites.

2houses: the complete co-parenting suite

2houses is probably one of the best known solutions among separated families in Europe. It is a full suite: shared custody calendar, messaging between parents, journal, and a finance section. If you are looking for a single tool to organise the whole of your co-parenting, it is a serious and well established option. Its generalist positioning has a downside: the finance section does not natively separate ordinary from extraordinary expenses as your arrangement or order defines them, so you have to rebuild that logic yourself. Expect around 170 euros per year, per family file.

AppClose: feature-rich, built for the United States

AppClose is a popular American app, free for a long time, which made its success. It is rich in features: calendar, messaging, reimbursement requests. In early 2026 it moved to a subscription of around 8.99 dollars per month per parent: if both parents subscribe, the yearly cost of the file exceeds most competitors. Designed for the American legal context, it understandably ignores the way European arrangements split ordinary and extraordinary expenses, and its interface still reflects its market of origin.

Shared calendars and generic free tools

Generic shared calendars and family organiser apps round out the landscape, usually free: day-to-day organisation, communication, sharing information. They can be enough if your priority is overall coordination rather than financial rigour. Like the suites above, none of them offers a genuine solo documentation mode with evidential value, nor a built-in distinction between the expense categories your arrangement or court order relies on.

Kidivi: the dedicated expense app (the one publishing this blog)

Kidivi makes the opposite choice: no calendar, no messaging, only the expenses. That is not a gap but a deliberate stance: no messaging also means one less battleground. In return, the financial side goes further than the generalist suites: receipt scanning with automatic reading in under 10 seconds, a native distinction between ordinary and extraordinary or exceptional expenses as agreed in your arrangement or set out in your order, and a configurable split ratio (50/50, 60/40 or any other ratio fixed by your agreement or court order).

On the evidence side, every receipt is time-stamped and receives a SHA-256 digital fingerprint, which makes it possible to demonstrate it was not altered afterwards, and a court-ready PDF export compiles everything for your solicitor or mediator. Reimbursement is settled in one tap: a pre-filled bank transfer with QR code, or PayPal. Two modes coexist: a shared mode with an accept or dispute workflow when both parents play along, and a solo mode to keep records on your own, with a monthly recap you can send to the other parent even if they never use the app. The app works offline first, the data is hosted in Europe and there is no advertising. It is available on Android (Google Play), with the iOS version announced.

On price: the free tier gives access to every feature, shared mode, PDF export, recap and reimbursements included, with two limits: one child and five expenses per month. Premium lifts those limits (unlimited children and expenses) for 4.99 euros per month or 39.99 euros per year, and a single subscription covers both parents of the file. A 14-day free trial is available on both plans.

Comparison table: generalist or dedicated?

Rather than an app-by-app contest, the real choice is between two families of tools:

How to choose for your situation

You want everything in one place, custody included. If your main need is the living arrangements calendar and communication, a suite like 2houses remains a coherent choice: that is exactly what it was built for, and its finance section will do if your expenses are simple and the relationship is calm.

Your problem is the expenses. Reimbursements dragging on, disagreements over what should be shared, a need to keep proof: a dedicated app is the better fit, because it builds in the expense categories and the question of evidence from the start, instead of leaving them to you.

The other parent will not take part. There is no point paying for a suite designed around two active accounts. Look for a solo mode that documents everything properly and produces a recap the other parent can receive without installing anything: that is what Kidivi offers, and it remains rare on the market today.

Your budget is tight. Compare the real cost per family file, not per account: an app billed per parent costs twice its displayed price if both pay. And start free: better to validate the habit before subscribing.

What to remember

There is no universally superior app: there are tools suited to different needs. Co-parenting suites shine when the whole of the children's life has to be coordinated between two homes. As soon as money becomes the central issue, with its expense categories, split ratios and demand for proof, a dedicated expense app takes the lead: a built-in ordinary versus extraordinary distinction, time-stamped receipts with evidential value, a court-ready export and a mode that works even when only one parent gets involved. List your three priority needs, test for free, then decide: it is the safest way to avoid paying a year's subscription for a tool that does not solve your real problem.