Cost Split Payments vs Cosum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cost Split Payments
Effortlessly manage shared expenses with friends, roommates, or travel buddies. This app automates calculations, tracks debts, and categorizes spending, making financial coordination simple and stress-free. Enjoy offline functionality for tracking expenses anytime, anywhere.
- Create and manage groups
- Log expenses with details
- Automatic expense calculations
- Track and settle debts
- Customizable expense categories
- Offline expense tracking
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Splitility: Simplify Expense Sharing Splitility is the ultimate app for managing shared expenses, whether you're planning a trip, splitting rent, or organizing a night out. Say goodbye to awkward money talks and let Splitility do the heavy lifting for you! Key Features: * Create Groups: Quickly set up groups for any shared experience—perfect for friends, roommates, or travel buddies. * Track Expenses: Log expenses effortlessly with detailed descriptions, amounts, and participant selection. * Automatic Calculations: No more messy math! Splitility ensures fair and accurate expense splits. * Debt Management: Instantly see who owes whom and keep things balanced with easy settlement options. * Customizable Categories: Categorize your expenses (food, transportation, entertainment, and more) for better tracking. * Offline Functionality: Track expenses anytime, anywhere—no internet required! Why Choose Splitility? * Intuitive and user-friendly interface. * Works great for everything from road trips to daily expenses. * Keeps your finances organized and relationships stress-free. Download Splitility today and make sharing expenses simple!
Cosum
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Cosum keeps track of what your group spends — and tells you exactly who owes what, in the fewest possible transfers. Add an expense, split it equally or by exact amounts or shares, and Cosum does the math. No spreadsheets, no chasing people down, no "wait, who paid for what again." WORKS WHERE YOU ARE • Add expenses from your phone or straight from your browser — cosum.app works from any laptop, same account, synced instantly • See a shared ledger's basics before you even sign up — check it out, then join when you're ready • View your balances even offline PERFECT FOR • Roommates splitting rent, bills and groceries every month • Trips and holidays with friends or family • Couples sharing everyday costs • Any group that owes each other money and wants it simple BUILT FOR REAL LIFE • Split equally, by exact amount, or by shares — for every kind of expense • Recurring entries for rent, subscriptions and salary — set it once, it logs itself every period, free on every plan • Every ledger keeps its own currency • A running activity log of who added or changed what • One small banner ad on the summary screen for free users — never on the screens where you enter money or settle up • 18 languages Cosum is built and maintained by one developer. Feedback goes straight to a real person, not a ticket queue. COSUM PREMIUM Premium removes the ad, raises your ledger and participant limits, lifts the daily entry cap, and unlocks a one-page PDF settle-up report you can share when a ledger is done. Cosum Premium is offered as a Monthly (1 month) or Yearly (12 months) auto-renewing subscription; prices are shown in the app and vary by region. Payment is charged to your Apple Account at confirmation of purchase and the subscription renews automatically unless turned off at least 24 hours before the end of the current period. Manage or cancel any time in your App Store account settings. If you don't subscribe, Cosum stays fully usable for free. Privacy Policy & Terms of Service: cosum.app/privacy · cosum.app/terms
Screenshots
Verdict
The clearest difference is update cadence: Cosum at every 5 days against Cost Split Payments's fortnightly. Cost Split Payments's advantage is iOS requirement (16.0 vs 18.2). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cost Split Payments sells 4 in-app purchases, starting at $4.99 per 7 days and Cosum sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Cost Split Payments ships an update fortnightly, Cosum every 5 days. The most recent releases landed on October 24, 2026 and September 30, 2026 respectively.
| Parameter | Cost Split Payments | Cosum |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (11 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 35 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Nadiia Martyniuk | OGUZHAN OZGOKCE |
In-app purchases
Cost Split Payments
- Weekly Plan3 Days trial$4.997 Days
- 6 Month3 Days trial$8.996 Months
- Yearly Plan$17.991 Year
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- 1 Month$31.991 Month
Cosum
- Premium Monthly$2.991 Month
- Premium Yearly$19.991 Year









