Comparison

Tandem vs Marlow Diary

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Tandem

Features
Read full description

Tandem is a shared organizer built for couples. Plan life together with shared to-dos, a shared calendar, and transparent expense tracking. Tandem helps couples stay organized, split responsibilities, and manage everyday life in one place. SHARED TO-DOs Create shared task lists, assign to-dos, and track what’s done. From groceries to weekend plans, everyone knows what needs doing. SHARED CALENDAR Plan events together with a shared calendar. See who’s involved, create a couple of events, and keep personal and shared schedules perfectly aligned. SHARED FINANCES Track expenses, see spending by person, and understand where your money goes. Transparent, simple, and made for two. Built for couples Tandem is designed around partnership: β€’ Shared and personal views β€’ Clear ownership of tasks and expenses β€’ Clean design that stays out of the way Private & secure Your data belongs to you and your partner. Everything is securely stored and only shared between the two of you. Whether you’re planning your week, managing finances, or organising life together, Tandem keeps everything in sync β€” so you can focus on what matters. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Marlow Diary

Features
Read full description

Marlow is a shared baby-care diary for sitters, helpers, and invited parents. Log the day in a few taps: - Sleep and naps - Bottles and feeds - Diapers - Mood - Medicine - Notes, allergies, and routines Sitters can add babies, organize rooms when needed, invite helpers, and keep each child's care notes in one place. Parents get a read-only view of their baby's day, including the current status, recent activity, allergies, care notes, and patterns over time. Marlow is built for independent sitters, nanny shares, and small care groups that want organized parent updates without a heavy daycare management system. Parents join only by invite. Children do not create accounts. Subscriptions are paid by the care diary owner through Apple in-app purchase; parents and helpers use Marlow for free. Terms of Use: https://marlow.care/terms

Screenshots

Tandem4 screens
Marlow Diary4 screens

Verdict

The call

The clearest difference is update cadence: Marlow Diary at every 4 days against Tandem's every 8 days. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Tandem sells 3 in-app purchases, starting at $5.99 per month and Marlow Diary sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Tandem ships an update every 8 days, Marlow Diary every 4 days. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

Scorecard1 real difference Β· 5 level
Tandem versus Marlow Diary: the parameters behind the verdict, then further details
ParameterTandemMarlow Diary
PriceFreeFree
Update frequencyEvery 8 daysEvery 4 days β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS15.115.1
Further details β€” not scored
Size55 MB50 MB
Age rating4+4+
DeveloperBruno PetkovicJoseph Coleman

In-app purchases

3 purchases

Tandem

Subscriptions2
  • Tandem Premium7 Days trial$5.991 Month
  • Tandem Premium7 Days trial$29.991 Year
One-time1
  • Tandem Premium Lifetime$79.99
4 purchases

Marlow Diary

Subscriptions4
  • Small Care14 Days trial$7.991 Month
  • Growing Care$19.991 Month
  • Small Care14 Days trial$79.991 Year
Show 1 more
  • Growing Care$189.991 Year

Questions

Is Tandem free?
Tandem is free to download, with in-app purchases available.
Is Marlow Diary free?
Marlow Diary is free to download, with in-app purchases available.
Do Tandem or Marlow Diary have ads?
Neither Tandem nor Marlow Diary shows ads.
Which is updated more often, Tandem or Marlow Diary?
Tandem ships an update every 8 days, and Marlow Diary every 4 days. Most recently, Tandem was updated on October 16, 2026 and Marlow Diary on October 4, 2026.

Other comparisons