Privacy policy

What this policy covers

This policy explains what information DataSplit handles when you use it. The short version: everything the app counts and stores stays on your iPhone. There is no server, there are no accounts, there is no advertising, and the app contains no analytics of any kind.

Data we collect

None. DataSplit has no server, no account system, no analytics, and no third party SDKs, so nothing you do in the app ever reaches us, and we have nothing to sell, share, or disclose. Your usage totals, network names, budgets, and settings are stored only on your device, in the app’s own storage. We cannot see them, and neither can anyone else. The one flow that does involve a third party runs from your device directly: name lookups go to Cloudflare or Google public DNS while data counting is on, as described under Name lookups (DNS) below.

How the counting works

To count and pause data, DataSplit uses the network tools built into iOS; iOS presents that kind of setup as a VPN and shows its icon while data counting is on, though there is no VPN server behind it. Data is counted on your device and sent straight out over your normal connection. Only packet sizes, protocol numbers, addresses, ports, and each connection’s destination name are read, as described under How connections are routed below. The content of your traffic is never read, never stored, and never transmitted anywhere; only the amount of data is counted, on the device.

How connections are routed

To deliver your traffic, DataSplit’s local tunnel has to know where each connection is going. For that it reads a connection’s destination: the server name and port for HTTPS, and for unencrypted HTTP the opening lines of the request, where the destination is written. The bytes are relayed unchanged either way. The name is used once, to open the connection, and is then discarded: it is not retained, not analyzed, not combined with anything, and not written to any log. Release builds of DataSplit contain no diagnostic logging at all, so no record of the names your device connects to can exist, on the device or anywhere else.

What leaves your device

Exactly four things ever leave your iPhone while you use DataSplit, and none of them goes to us. Your own internet traffic travels to its normal destinations, exactly as it would without the app. Name lookups are sent to Cloudflare or Google public DNS while data counting is on, as described under Name lookups (DNS) below. Purchases are processed by Apple. And any email you choose to send goes to our support address. That list is complete.

What stays on your device

To keep a budget per network, DataSplit remembers the networks your device connects to: Wi-Fi names, an anonymous SIM identifier that tells one SIM from another, and wired adapters, together with their budgets and settings. Usage is stored as half hour samples plus a daily history of about two months. All of it lives only on your device, in the app’s own storage.

Name lookups (DNS)

Every device turns a name such as example.com into an address before it connects. That step is called a DNS lookup.

While data counting is on, DataSplit sets your device to use public DNS servers: Cloudflare (1.1.1.1 and 1.0.0.1) and Google (8.8.8.8). It does this so names keep resolving on every network it counts on; the servers a network hands out are not always reachable while counting runs.

This means Cloudflare or Google receives the names your device looks up and the IP address the lookup comes from, the same as any DNS provider would. They do not receive the content of your traffic, and DataSplit sends them nothing else: no identifiers, no usage figures, no account, because there is none. DataSplit does not read, store or transmit your lookups.

Those lookups are handled under the privacy terms of each provider: Cloudflare’s public resolver privacy page and Google Public DNS privacy.

When data counting is off, your device uses the DNS servers your network or your own settings provide.

App blocking and Screen Time

The optional app blocking feature works through the Screen Time controls of iOS, and DataSplit uses that access for exactly one purpose: to block the apps you chose yourself when a budget threshold you set is crossed. You pick the apps in a picker provided by Apple, and your choice is stored as opaque system tokens, so neither the app nor we ever learn which apps you picked; iOS keeps that choice to itself. Screen Time data is never collected, shared, or used for advertising. Screen Time access is requested only when you turn the feature on, and you can withdraw it at any time in iOS Settings under Screen Time.

Notifications

Budget warnings and status updates are generated locally on your device. They are optional, each category has its own switch in the app, and nothing about them leaves your phone.

Purchases

If you unlock DataSplit Pro, the purchase runs entirely through Apple and your Apple account. Apple processes the payment and keeps the receipt under its own privacy policy; DataSplit never sees your name, payment details, or billing address. The app stores exactly one thing about it: whether Pro is unlocked, on your device, like any other setting.

Support email

Emailing us is always voluntary. Your address and message are used only to answer you and stay in our mailbox; they are never linked to anything in the app, and the app attaches nothing to the email you write.

Data retention

Everything DataSplit saves lives on your iPhone. Forgetting a network in the app immediately deletes that network’s history and settings, and deleting the app deletes everything. If you back up your device, the app’s data is included in that backup like any other app’s, under Apple’s terms.

Children

DataSplit is made for a general audience and is not directed at children. It collects no personal information from anyone, including children, and it contains no ads, no chat, and no user content. The Screen Time app blocking feature is self-managed: you block your own chosen apps on your own device. DataSplit is not a parental control service.

Third party services

The complete list is short. Apple distributes the app, operates the iOS permissions it uses, and processes any purchase. Cloudflare and Google answer your device’s name lookups while data counting is on, as described under Name lookups (DNS); they receive nothing from us, because we send nothing. There are no ad networks, no analytics providers, no third party SDKs, and no tracking of any kind.

This website

data-split.com is served as plain static files. It sets no cookies, contains no analytics, and loads nothing from third parties, which is why there is no cookie banner: there is nothing to consent to.

Your rights

Depending on where you live, you may have the right to access, correct, or delete personal data. DataSplit makes this simple: we hold nothing about you, so there is nothing for us to hand over, correct, or erase, and because we collect nothing, we transfer nothing about you to anyone, in any country. Everything the app knows sits on your device, and deleting the app removes it. You can still email us with any privacy question or request.

Contact

This policy applies to the DataSplit iOS app and to data-split.com, published by Nicolaas Vertelman.

Questions about privacy? Email devkoosv@gmail.com.