Terms of Service
These terms cover your use of the ARP app on iPhone and iPad, and the related website at arpaudio.app. The short version: ARP is yours to use on the devices you own, audio stays on your devices, Premium is a one-time purchase handled by Apple, and the app does not collect your audio or identity. The marketing website uses PostHog for website analytics — see the Privacy Policy.
1. Acceptance
By downloading, installing, or using ARP, you agree to these Terms and to the Privacy Policy. If you do not agree, do not use ARP. The App Store's own terms apply to the download and the transaction; these terms govern your use of the app itself.
2. Platforms
ARP is an iPhone and iPad app (App Store app id 6758187060, bundle ARP.ARP) for iOS and iPadOS 26 or later.
Earlier versions also included a Mac app and an Apple Watch companion. Both are discontinued as of version 2.0. If you already have the Mac app, it keeps working as it is but gets no updates. Premium bought on any platform is restored in the iPhone and iPad app through Restore Purchases.
3. License
ARP grants you a personal, non-exclusive, non-transferable license to use the app on devices you own or control, for personal and commercial use of your own audio. You may not redistribute the app, the bundled RNNoise model, or the audio engine.
You retain all rights to the audio files you import. ARP does not claim any ownership or licence over your inputs or your exports. The enhanced file is yours; delete the app and the originals are still where you put them.
4. Your audio
Cleaning and transcription run on the device you imported the recording on. Your audio is not transmitted to any server by ARP. There is no cloud copy. Recordings are imported from the Files app (including iCloud Drive). The first transcript downloads Apple's speech model to your device; no audio is sent with that request.
You are responsible for the audio you import. Only clean or transcribe recordings you have the right to use, and the licence above does not grant you any new rights over third-party audio.
Transcripts are produced by speech recognition and can contain mistakes. Check anything that matters against the recording.
5. Free recordings
The free tier of ARP includes 10 recordings per device. Each recording ARP cleans counts once. A recording ARP refuses because it is already clean does not count. Premium removes the limit. The count is stored on your device.
Free recordings are per device, not per account. Deleting and reinstalling the app resets the counter on iOS in a way Apple permits; do not rely on that as a feature.
6. ARP Premium
ARP Premium is sold as a single non-consumable in-app purchase. It is a one-time payment, not a subscription. The product ID is ARP.ARP.premium.
Premium unlocks:
- No limit on recordings — the 10-recording free limit is removed.
- 24-bit WAV export — lossless, broadcast format.
- 24-bit AIFF export — lossless, uncompressed.
M4A (AAC) export is free for everyone, and so are transcripts and the Original / Cleaned / Removed comparison. Premium does not unlock extra processing modes.
Apple shows your local price at the point of purchase. We do not have a promotional code, discount, or trial system at the moment.
7. Refunds
Refunds are handled entirely by Apple through the App Store. You can request a refund at reportaproblem.apple.com or through the App Store app. ARP cannot issue refunds directly and will not process them outside of Apple.
Apple may grant or decline the refund at its discretion. Because Premium is a non-consumable, the App Store rules on refund eligibility apply; a refund may revoke the entitlement and downgrade your install to the free tier.
8. StoreKit and the App Store
ARP uses Apple's StoreKit 2 framework. Apple is the merchant of record. ARP receives the transaction record (product, price, date) so it can unlock Premium features, but does not receive your Apple ID, payment instrument, or billing address. Apple's terms at apple.com/legal/internet-services/itunes apply to the purchase itself.
The App Store product identifier is id6758187060.
9. Privacy
The Privacy Policy is part of these Terms. The privacy manifest Apple reviews (PrivacyInfo.xcprivacy) declares zero data collected and no tracking. If the privacy manifest ever changes, the Privacy Policy will be updated and a notice will appear in the app.
10. Intellectual property
ARP, the audio engine, the bundled RNNoise model, the app's code, the app’s design system, the website copy and assets, and the ARP trademarks are owned by Matthew Worner or are used under licence. You may not redistribute, decompile (beyond what applicable law allows), or commercially resell the app or its components.
You retain all rights to the audio you import and export. See §4.
11. Changes
We may update these Terms from time to time. Material changes — a new data flow, a new charge model, a change in licence scope — will be surfaced in the app and bumped at the top of this page. Editorial changes that don't change the substance won't be announced. Your continued use of ARP after a material change is your acceptance of the new Terms.
12. Termination
You can stop using ARP at any time by deleting the app. We can stop offering ARP at any time, with or without notice; if we do, we will not have access to your library or your audio, and Apple will manage any refund through the App Store.
We may suspend or revoke access to ARP Premium if Apple's refund system reports a successful refund. That suspension is automatic and not a sanction.
13. Disclaimer and limitation of liability
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT.
IN NO EVENT SHALL ARP, MATTHEW WORNER, OR ITS LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA, OR OTHER INTANGIBLE LOSSES, RESULTING FROM OR ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE APP.
The audio engine is good. It is not perfect. It is the kind of tool that helps with hiss, hum, and broadband noise on real-world recordings; it is not a forensic restoration lab, and it is not a substitute for a mastering engineer. Use your judgement.
14. Governing law
These Terms are governed by the laws of the United States and the State of California, without regard to its conflict-of-law provisions. Nothing in this section limits any consumer-protection law that applies in your jurisdiction.
15. Contact
Questions, complaints, and bug reports go to matthew.worner@me.com. We are a one-person operation; the inbox is read and answered.