Tandem

Tandem is a mobile-first app built by couples, for couples. It's designed for two people sharing expenses, tracking what they're spending together, planning household purchases, and coordinating shared tasks. The tag line is "the essential app for living together," and the product centers on reducing the logistics and conflict around money and decisions when you're sharing a life with someone.

Unlike apps that aggregate all your banking data, Tandem is a standalone tool where both partners manually log shared expenses. You open the app, log a shared expense like groceries, mark it as a shared expense, and the app updates the balance showing who's ahead and who's behind. It's designed to replace the mental math, the post-it notes, the "wait, didn't you pay for dinner last time?", and the split-request chaos that couples often use Venmo for.

Splitting expenses: automatic for recurring, flexible for one-time

Tandem has two expense models. For recurring expenses like rent, utilities, subscriptions, and weekly groceries, you set them up once and Tandem splits them automatically every time they're due, without you re-entering or manually dividing each occurrence.

For one-time expenses, you log them individually. You note the amount, who paid, and the category, and Tandem instantly updates the household balance to reflect who owes whom and how much.

The app calculates the imbalance continuously so neither partner has to track it mentally. Whichever partner has paid less toward shared expenses in a given period, Tandem shows exactly what they owe the other, and that number updates whenever one of you logs an expense.

Spending categories and insights

Every expense goes into a category: groceries, dining out, utilities, subscriptions, furniture, transportation. Tandem then shows you a breakdown of how much the household is spending in each category each month. This is useful for spotting where money is actually going instead of guessing. A couple might think they're not eating out much, then see the category breakdown make it plain how much actually went to restaurants last month.

The app also shows household totals: total spending together, broken down by category, plus trends to highlight when categories jump significantly.

To-do list for two

Tandem includes a shared to-do list built specifically for couples. Instead of a generic task manager, it's designed for the kinds of decisions two people living together face: scheduling a plumber, calling the landlord, shopping for a new couch, planning a trip. You can assign tasks to one person or the other, add due dates, and check them off together. The point is keeping shared household work from becoming one person's mental burden.

Wishlists and shared shopping

Tandem has a wishlist feature for bigger purchases. A couple might want to replace furniture, repaint the apartment, or save for a vacation. Instead of one person imagining what they want and springing it on the other, Tandem lets both partners add items Pinterest-style. You both browse and mark what appeals to you, then align on favorites before buying. The app also suggests recommendations for common purchases.

Home buying tools and mortgage referrals

Tandem includes tooling for couples considering a home purchase. This includes affordability calculators, the ability to model purchase scenarios, and tracking interest rates. The app also offers connection to mortgage lenders, framed as helping you find "the best mortgage provider for your financial profiles." This is a lead-generation feature rather than a core budgeting function, and couples using Tandem for expense splitting can ignore this entirely.

Pricing: not published on the site

The Tandem homepage mentions "Your Cart $ 0.00 USD" in a shopping-cart placeholder, but that's not pricing information. The site's pricing page does not contain Tandem's actual pricing. The page at /pricing is titled "Kanae - Webflow Ecommerce website template" and shows placeholder text, Lorem ipsum descriptions, and prices of $390, $290, and $190 monthly; these are template placeholder prices from the Webflow theme, not Tandem's actual pricing.

This is a significant gap. You cannot determine from Tandem's own website what the app costs, whether there's a free tier, whether it requires a paid subscription from day one, or what features are included at different price points. The absence of pricing information means you'd need to download the app and sign up to learn the cost model.

This is unusual and unhelpful, especially for a couples app. Tandem's own testimonials compare it favorably to Splitwise and Venmo, apps couples often turn to for splitting costs, yet Tandem publishes no pricing of its own anywhere on the site. If transparent pricing is important to you when comparing tools, Tandem forces you to take the extra step of creating an account before knowing the cost.

Platform and availability

Tandem is available as a mobile app on the App Store for iOS. The site notes that the Android app is coming soon and invites visitors to sign up to be notified when it launches.

The app can be downloaded and set up in minutes. You create an account and invite your partner, and you're ready to log expenses.

Who's using it

The site mentions "tens of thousands of couples" use Tandem. The app has testimonials from people saying it's made shared expenses dramatically easier and that they open it multiple times a week.

One testimonial compares it favorably to Splitwise and Venmo. Another notes that the setup was painless and that it's easy to add expenses from different credit cards. The most common theme in testimonials is that couples no longer have to think about or track who owes whom.

Company background

Tandem was built by couples. The company is based in Ann Arbor, Michigan, and the founding idea came from the founders' own experience of managing shared money with a partner. They bill it as "built by couples, for couples," which shows in the design focus on shared tasks and household planning instead of just expense tracking.

What Tandem does and doesn't do

Tandem splits recurring and one-time shared expenses, tracks spending by category, provides a shared to-do list, and includes wishlist and home-buying tools. It does not connect to banks or sync transactions automatically. It does not provide budgeting in the traditional sense; you're not setting spending limits or categorizing all of your personal spending. It's specifically a shared-expense and household-coordination tool.

It's not meant for solo users or for groups larger than two. You cannot use it to split costs with a business partner, a roommate group, or a friend on vacation. The design assumes a couple building a life together.

Who it suits

Tandem works best for couples who want to eliminate the friction of "who paid for what" without opening a joint bank account. It's useful if you want one shared place to coordinate household tasks, plan purchases together, and see how much you're spending together each month.

It doesn't replace a household financial dashboard that syncs all your accounts, or a full budgeting app. It's lighter weight and more specific: couples who primarily need expense splitting and household coordination, not account aggregation or broader financial planning.

The lack of published pricing is a significant friction point. You'd need to download and test to know whether it costs money, how much, and what the plan structure is. For some couples that exploration is fine; for others, transparent pricing is a requirement.

The verdict

Tandem addresses the core tension couples face around shared money: logging expenses, tracking balance, settling up without Venmo friction, and coordinating household tasks. The design is clean and focused on the two-person use case. The absence of pricing information on the site is a real gap, and it forces you to take more steps before deciding whether it fits your budget. If you get past that friction, the app's core functionality is solid and its users clearly find value in it.