Freelax - Data Box Client

Czech data box client (ISDS)

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Keep your official mail under control – calmly. Important messages stand out so nothing slips by. You quickly see what needs attention. Private, on your phone. Official mail can be a headache: deadlines, requests, and wording that's not always easy to follow. Freelax DS is a private, independent helper for your Czech data box (datová schránka / ISDS): important messages stand out at a glance, you quickly see what needs attention, and your credentials stay only on your device. FREE • 1 data box • Read and view messages and attachments (PDF) inside the app • View locally cached messages without another sign-in; every live ISDS fetch is confirmed by you • Send a message to another data box • Sign in with Face ID / Touch ID • Local archive of saved messages on this device • A reminder when you haven't checked your box in a while • Scheduled check reminders on days and times you choose (local notifications only – no connection to your data box) PRO (subscription) • The official data box alert won't get buried in your inbox – the app catches it and notifies you on your phone, no sign-in needed. Set up once with a guided walkthrough at your email provider • Up to 3 data boxes in one place • An "Actions" view and importance traffic-light – instantly see what needs attention • Rich notifications based on message importance • Home-screen widgets • Choice of check-reminder interval (3, 5, 7, or 9 days) • Plain-English context: quickly see what a Czech message or document is about, with explanations of Czech terms, amounts, and dates – informational only; always verify the original • Calendar reminders for messages you plan to handle • In the English interface: download the one-time ~230 MB translation model in Settings, then translate Czech documents on-device with no cloud AI (a reference aid, not a certified translation) PRIVACY • Your credentials are stored only on your device in Keychain; they are used only to sign in directly to ISDS and are never sent to Freelax. • Email alerts are optional. We never connect to your mailbox and never ask for your email address – you create the forwarding rule at your own provider. Our relay accepts mail only from the official ISDS notifier – plus, during Gmail setup, a one-time verification email from Google. The origin is verified by a DKIM signature and anything else is discarded. From an accepted notice we read only the sender, subject, message number, box ID and the email's technical Message-ID. We never store or log the raw email, and Apple receives only encrypted data needed to deliver the alert. • Data Box message contents, attachments and ISDS credentials never enter this service. • No ads, no tracking, no third-party AI services. • Translation and importance analysis run entirely offline on your device. INDEPENDENT APP Freelax DS is not an official government app and is not affiliated with CZ.NIC or any authority. It is an independent helper for working with your own official correspondence. IMPORTANT This app is an assistant, not a replacement for your own responsibility – tracking deadlines and responding to official mail is up to you. A live refresh of the received-message list from ISDS may, under Czech Act No. 300/2008 Coll., have the legal effects of delivery. Live refreshes are manual and always confirmed by you; scheduled reminders are local notifications only and never connect to ISDS. Need more than 3 boxes (accountants, offices, firms)? Email support@freelax.cz. TERMS AND PRIVACY • Terms of Use (Apple's standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Terms of Service: https://freelax.cz/datovka-ds/terms • Privacy Policy: https://freelax.cz/datovka-ds/privacy

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Up to 10 days’ head start: know a new message is waiting before possible deemed delivery. • More time, less stress: act without checking your Data Box every day. • Stay ahead of deemed delivery: see the estimated day and get reminders as it approaches. • Always in sight: Expected messages appear across the app, Actions, widgets, and badge. • New: write and send data messages straight from your phone. • Reply, forward, send again, or reuse a message as a template. • Forward the whole original message, or just the files you pick. • Recipients are offered from your own sent history. • Long-press to copy a data box ID, yours or the other party’s. • Find messages by data box ID, received and sent. • Bug fixes and stability improvements.

Version 1.0.3

The developer, Freelax Digital s.r.o., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • User Content
    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • Dark Interface

Information

Seller
  • Freelax Digital s.r.o.
Size
  • 13.6 MB
Category
  • Productivity
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English and Czech
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Freelax Digital s.r.o.
  • Developer Website
  • Privacy Policy

    • You Might Also Like