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Case study · Mobile app · Personal finance

SubWise: a subscription app that shows where the money goes

We designed and built SubWise for iOS and Android in one month: one place for every subscription, a calendar of upcoming charges, alerts before renewals and tips on what to cancel.

Product
SubWise
Industry
Personal finance
Platforms
iOS · Android
Timeline
1 month
Service
Design + development
adds a subscription

The challenge

Subscriptions are a financial blind spot

Small recurring charges are easy to miss in a bank statement. The client wanted an app that brings them to light.

  • ForgottenPeople forget what they subscribed to, and there is no single place to see it all.
  • Renewed unnoticedRenewals show up only after the money is already gone.
  • Barely usedServices opened once and then forgotten keep charging every month.
Card statement · October•••• 4821
Oct 01Salary+$3,200.00
Oct 02Supermarket−$64.20
Oct 03iCloud+forgotten−$2.99
Oct 04Coffee−$4.50
Oct 05Spotify−$10.99
Oct 06Apple Musicbarely used−$10.99
Oct 07Fuel−$48.00
Oct 12Adobe Creative Cloudrenewed unnoticed−$59.99
Oct 14Restaurant−$37.80
Oct 28Netflix−$15.49
Unnoticed in this statement$73.97 / month

The client

The request

The client came to us with a clear idea: a modern subscription tracker that makes recurring payments transparent, prevents hidden charges and helps people save.

The product had to be simple enough for everyday users, yet smart enough to feel like a personal finance assistant.

The task

An MVP on two platforms in one month

Together with the client we fixed the MVP scope and the roadmap: what goes into the first release and what comes later.

We designed the interface, built the mobile app, the backend and the logic that groups subscriptions, plans charges and spots the ones worth cancelling.

How it works

From a list of payments to a financial assistant

AddThe user adds a service, price and billing cycle
CategoriseVideo, music, work, cloud: spending by category
PlanEvery charge lands on the payment calendar
AlertA push notification before each renewal
AdviseDuplicates and low-value subscriptions flagged

In the MVP

Subscription dashboardPayment calendarRenewal alertsMonthly expense analyticsCategories and insightsRecommendationsHabit-friendly UX

Key screens

Four screens that do the job

9:41
SubWise
Subscriptions
Total cost

$114.44/mo

Next paymentNetflix · tomorrow

6 active subscriptions

NetflixVideo
$15.49Oct 28
SpotifyMusic
$10.99Nov 05
Apple MusicMusic
$10.99Nov 06
Adobe Creative CloudWork
$59.99Nov 12
YouTube PremiumVideo
$13.99Nov 15
i
iCloud+Cloud
$2.99Nov 03
+ Add subscription
HomeCalendarInsightsProfile
DashboardMonthly total, next charge and every active subscription.
9:41
October 2026
MTWTFSS
12345678910111213141516171819202122232425262728293031
NetflixTomorrow · 28
$15.49
SpotifyNov 05
$10.99
HomeCalendarInsightsProfile
CalendarWhich service charges when, so nothing comes as a surprise.
9:41
Analytics
Spent this month$114.44
Video$29.48Music$21.98Work$59.99Cloud$2.99

−8% vs last month

HomeCalendarInsightsProfile
AnalyticsSpending by category and the trend against last month.
9:41
Insights
You pay for 2 music services

Spotify and Apple Music do the same job. Cancel one and save $10.99/mo.

Spotify$10.99Apple Music$10.99
Cancel Apple Music
Adobe renews on Oct 12

$59.99 · opened twice last month

HomeCalendarInsightsProfile
InsightsDuplicates and services worth cancelling, with the saving.

Tech stack

Cross-platform, with one codebase

React NativeiOS + Android
Node.js · NestJSBackend
PostgreSQLDatabase
Firebase Cloud Messaging + APNsPush notifications
Firebase · MixpanelAnalytics
AWS · S3, EC2, RDSInfrastructure
GitHub ActionsCI/CD

Results

A working product in a month

1 monthfrom the agreed scope to a working MVP
2 platformsiOS and Android from one React Native codebase
7 featuresin the first release, from dashboard to recommendations

SubWise is not just another finance tracker: it helps people see every recurring payment and stop paying for what they don’t use.

Have an app idea?

We design and build mobile apps and MVPs for iOS and Android, with a fixed price in writing before we start.

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