Have a question, running into something, or want to report an issue? We’re happy to help. Below you’ll find answers to the most common questions and how to reach us.
Subject: Please include your app version and a brief description of your question or issue.
We respond as quickly as possible, typically within a few business days.
Step-by-step guide to setting up and using the app - from your first location to your first monthly close. View the guide → All guides per tab are under How it works.
Yes. Your records live on your device and in your own iCloud. Sub37 Labs has no central database with your data and no access to your numbers. Only when you start an AI feature yourself does the part it needs go to our processing service. iCloud sync is enabled by default when you are signed in with an Apple ID — your data is then encrypted and stored in your personal iCloud account. You manage this via iOS Settings → your name → iCloud → ZumFlo. More details are available in our privacy policy.
Yes. After downloading, you get 14 days of free access to all Pro features (lower limits apply to the AI features during the trial). No account or credit card required to get started. After the trial, you choose whether to continue with ZumFlo Standard or Pro.
Your subscription is managed through your Apple ID. Go to iOS Settings → your name → Subscriptions → ZumFlo. There you can cancel or switch plans. After cancellation, you keep access until the end of the current period. Your data stays on your device and is not deleted.
Both plans offer the full daily calculation, insights, PIN integration (SumUp and PayPal POS), automatic price list import (look it up online or scan your price card), the monthly settlement and reports in 10 languages. Standard costs €9.95 per month or €99 per year and works with up to 2 work locations. Pro costs €18.95 per month or €189 per year and adds, among other things, the calendar link with forecast, the settlement check against your host, receipt and purchase invoice scanning, the Moneybird integration, accounting exports, exception rules, stepped pricing and unlimited work locations.
Yes. ZumFlo works fully standalone. The integrations with SumUp, PayPal POS and Moneybird are optional — without a connection you enter amounts yourself and the calculation works the same. Connecting your card terminal does offer advantages: automatic processing of transactions across your working days, error-free recording of tips and direct calculation of transaction fees. That reduces manual work and the chance of input errors.
Yes. ZumFlo puts each card payment at a location straight away, based on where you work that day and the time slot of each location; a payment outside every time slot goes to the location whose time slot is closest. If a payment is at the wrong location after all, you move it in one step: press and hold, then Move to. Standard supports up to two locations, Pro unlimited. See working at several locations.
Yes. Your data is automatically synchronised via iCloud between your Apple devices with the same Apple ID. You manage this via iOS Settings → your name → iCloud → ZumFlo. Only your calendar link is not synced; you link it again on a new device.
Go to My Business → Settings → Integrations → Payment integration, choose your provider and tap “Connect SumUp Account” (or PayPal POS). You log in with SumUp itself; ZumFlo only gets read access to your transactions and never sees your password. Step by step: connecting SumUp.
With Pro you link a read-only calendar link (iCal) per location, for example from Salonized: My Business → your location → Calendar → Link calendar. ZumFlo fetches your appointments directly on your device and does not ask for access to your iPhone’s calendar. On a new device you link it again. More in connecting your calendar.
The settlement check and receipt and invoice scanning (Pro) only run when you start them yourself, and the same goes for importing your price list automatically. For the settlement check, ZumFlo first removes client names and other personal data on your device; a scanned receipt, invoice or price card is processed in full and not stored afterwards. Usage limits apply: 3 settlement checks per location per month and 25 scans per month, shared across receipts, invoices, price cards and online price-list lookups (trial: 1 check per location per month and 10 scans in total). How and where exactly is explained in the privacy policy, sections 3.5 and 3.6.