# Requirements

Check the system versions, storage, network, and account needs of each feature before you rely on it in a session.

> Type: Reference · Status: Stable · Platforms: iPadOS 17+, iPadOS 17+ · Last reviewed: 2026-07-18

## System requirements

Page Turner runs on iPhone and iPad with iOS or iPadOS 17.0 or later.

> **Note** The app installs under the name `iTurner`. Use that name to find it
> on the Home Screen and in the device `Settings` app list — for example when
> you change a permission or check storage use.

In-app Settings is organised into four tabs: `General` (account, reading
preferences), `Assistant` (AI features), `Sync` (iCloud backup and storage),
and `Dev` (diagnostics). This page names the tab whenever a requirement is
checked or changed there.

## Storage

Importing stores a copy of each picked file inside the app; the original file
is not moved or modified. Keep enough free space for:

- the copied score files — large PDFs, page images, and bulk imports add up;
- takes you record in `Recording Studio`.

To see what the app is using, open the `Sync` tab of Settings: the
`On this device` row shows the total with a per-category breakdown, and
`Free up space now` merges duplicate re-imported scores and removes orphaned
files no score points to. It asks for confirmation first and does not touch
your annotations.

Files kept in iCloud Drive or another Files provider may need to download
before they can be imported. That download is controlled by iOS and the
provider, not by Page Turner.

## Network

Reading a stored score, turning pages, and annotating work without a
connection. These features need one:

- Browsing and opening scores from the `Catalog` tab.
- `Convert to Smart Score` (PDF → editable notation runs on the conversion
  service).
- Assistant answers that use the cloud service. With
  `Apple Intelligence (on-device)` turned on in the `Assistant` tab, answers
  the on-device model can handle work without a connection.
- `Ask our server when a page is too hard` (`Assistant` tab): when a page
  can't be mapped on the device, that page is sent to the analysis service to
  place the tracking bands. Off, you place the bands yourself on those pages.
- `iCloud Backup & Sync` in the `Sync` tab of Settings.

> **Note** Cloud page analysis is opt-in. The first PDF import shows a
> one-time consent sheet (`Enable` / `Not now`); the same switch stays
> available afterwards in the `Assistant` tab.

## Feature requirements

| Feature | Needs |
| --- | --- |
| `Scan a score` | Camera permission and a supported device (see the limit below) |
| Hands-free page turns (`Enable face gesture`) | Camera permission and a front TrueDepth camera |
| `Follow` | Microphone permission and a [score prepared for Follow](/docs/follow/prepare) |
| `Recording Studio` | Microphone permission and free storage for takes |
| `Convert to Smart Score` | Network access; free conversions run anonymously up to an allowance — past it, the in-app `Apple Account` sign-in |
| On-device assistant (`Apple Intelligence (on-device)`) | A device that supports Apple Intelligence; check the device `Settings` app for it |
| `iCloud Backup & Sync` (`Sync` tab of Settings) | The device signed in to iCloud |
| `Bluetooth page pedal` | A pedal that pairs as a Bluetooth keyboard |
| Annotation (`Pen`, `Eraser`) | A finger is enough; an Apple Pencil works but is not required |

See [Permissions](/docs/start/permissions) for what each system permission is
used for and how to change a decision later.

> **Limit** On devices where the system document camera is unavailable,
> `Scan a score` does not appear in the `Add score` menu at all — it is
> absent, not disabled.

> **Note** `Apple Intelligence (on-device)` is free: it runs entirely on the
> device, with no account and no usage limits. On devices without Apple
> Intelligence support, the assistant uses the cloud service instead, which
> needs network access.

### Page pedals

Page-turn pedals — AirTurn, PageFlip, Donner, and the like — pair with your
iPad as a Bluetooth keyboard in the device `Settings`, under Bluetooth. Once
paired, they turn pages in Page Turner with no extra setup and no
in-app permission request. Pedal and face-gesture options live in the
reader's Toolbox, not in the app Settings tabs.

## Accounts

Two separate sign-ins matter, and they are easy to confuse:

- **`Apple Account` (in-app)** — Sign in with Apple, at the top of the
  `General` tab of Settings. Signing in unlocks PDF → MusicXML conversion
  beyond the anonymous free allowance and contributing scores to the public
  library.
- **iCloud (device-level)** — the account the device itself is signed in to.
  It backs `iCloud Backup & Sync` in the `Sync` tab and the iCloud Drive
  locations in the Files picker.

> **Important** Signing in with `Apple Account` inside the app is separate
> from being signed in to iCloud on the device. A feature may depend on one,
> both, or neither.