Comparison

Duee vs Session Flow

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

Head to head
About

Duee

Organize all your recurring bills and subscriptions in a visual calendar. Get smart reminders before payments are due and track your expenses easily. Avoid missed payments with this simple, intuitive tool.

Highlights
  • Payment calendar with month view
  • Recurring payment tracking
  • Smart due date reminders
  • Mark payments as paid/unpaid
  • Notes for payment details
  • Monthly and yearly totals
  • Multi-currency support
Features
Read full description

Track bills, subscriptions, rent, and recurring payments in one simple calendar so you always know what is due next. Duee helps you organize your monthly payments in a clean, visual way. See upcoming bills by date, understand how heavy each day looks, and stay ahead with reminders before something gets missed. Features: • Payment calendar with a clear month view • Recurring payments: weekly, monthly, yearly, and installments • Smart reminders for upcoming due dates • Mark payments as paid or unpaid • Notes for payment details and personal info • Monthly and yearly totals at a glance • Multi-currency support • Clean icons for apps, services, and utilities • Premium options for advanced reminders and unlimited tracking Use Duee for subscriptions, rent, utilities, memberships, insurance, phone bills, internet, and other recurring expenses. Simple to use. Easy to scan. Built to help you avoid missed payments.

About

Session Flow

Features
Read full description

Session Flow is the calendar for anyone who works by appointment and wants to know, without mental math, who has paid and what's left to collect. It works for therapists and counselors, dietitians, physical therapists, private tutors, personal trainers, hair stylists, nail techs and anyone paid per visit. Add a client once, with the day, the time and the fee, and your schedule fills itself in. Every session shows its fee and whether it's been paid. Your schedule fills itself in • Weekly, every other week, monthly or your own repeat, with a set number of sessions if you need one. • Mark holidays and your time off, and the app cancels those sessions; change your mind and they come back. A client who travels gets a pause of their own. • No-shows, cancellations and rescheduling in one tap, with no math to redo. • Day, week and month views, with a warning when two times overlap. • Already use your phone's calendar? The app reads your appointments and sets up each client with you, one by one. Nothing in your calendar changes. Payments in one place • One tap on Mark as paid and the session is paid. • Per session or per month, a flat fee or the sum of the sessions: each client on their own terms. • A rate increase applies from its date on, and older open sessions keep the old rate. • Outstanding: the total and client by client, always up to date. • Prepayments become a balance, and each session draws from it (Premium). Reminders and payment messages on WhatsApp • The session reminder, with the day and time, is ready to send, and the day's list shows who still needs one. • The payment message is ready too, with the date of each open session and the total (Premium). You check it and send it. • Charge one by one: each client's payment message, one after the other (Premium). • Notifications on your phone before each session. Receipts and documents • Receipts, attendance letters and a superbill template, as PDFs with your details and your client's. • Ready-made templates, and your own. • A spreadsheet of payments received, for your accountant. Your month in numbers • Received, forecast and what's left, month by month. • Average ticket, % canceled and the month's chart (Essential and Premium). • On a tablet or computer, Insights: your year month by month and what needs attention this week (Premium). Your data stays with you • Works without an account and offline. Without the cloud, nothing leaves your phone. • No tracking. • Back up to a file whenever you want. • With the cloud (Premium), the same data on your phone, tablet and browser. • For health professionals: Session Flow is not a clinical record, and it keeps only what your schedule and payments need. Your work, your words • Call the people you see clients, patients or students, and each visit a session, appointment, consultation or class. • Groups, with each participant's fee and payments (Premium). • English, Portuguese and Spanish, with your currency and 12- or 24-hour time. Plans • Up to 4 clients, with no subscription and no time limit. • Essential: up to 40 clients and full statistics. • Premium: up to 1,000 clients, cloud sync, WhatsApp payment messages, groups, prepayments and Insights. • Essential and Premium come with a 14-day trial on your first subscription. Cloud Terms of Use: https://getsessionflow.app/en/terms/ Privacy Policy: https://getsessionflow.app/en/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Keywords appointment scheduling,appointment scheduler,client scheduling,payment tracking,client management,recurring sessions,psychologist,therapist,coach,personal trainer

Screenshots

Duee3 screens
Session Flow4 screens

Verdict

The call

The clearest difference is update cadence: Session Flow at every 3 days against Duee's fortnightly. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Duee sells 3 one-off in-app purchases and Session Flow sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Duee ships an update fortnightly, Session Flow every 3 days. Both last shipped on October 24, 2026.

Scorecard1 real difference · 9 level
Duee versus Session Flow: the parameters behind the verdict, then further details
ParameterDueeSession Flow
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyFortnightlyEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.416.0 — better
Further details — not scored
Size60 MB52 MB
Age rating4+4+
DeveloperYigit ERKALKaio Rafael de Oliveira Diniz

In-app purchases

3 purchases

Duee

One-time3
  • Monthly$1.99
  • Yearly$9.99
  • Remove Notification Limit$19.99
3 purchases

Session Flow

Subscriptions3
  • Essential14 Days trial$1.991 Month
  • Session Flow Premium Monthly14 Days trial$7.991 Month
  • Session Flow Premium Yearly14 Days trial$59.991 Year

Questions

Is Duee free?
Duee is free to download, with in-app purchases available.
Is Session Flow free?
Session Flow is free to download, with in-app purchases available.
Do Duee or Session Flow have ads?
Neither Duee nor Session Flow shows ads.
Which is updated more often, Duee or Session Flow?
Duee ships an update fortnightly, and Session Flow every 3 days. Most recently, Duee was updated on October 24, 2026 and Session Flow on October 24, 2026.

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