The reasonable-person version.

Who runs this

midislayer.com and the MidiSlayer app are operated by Monoglyph Ltd, a company registered in England & Wales (company number 17364027), registered office 128 City Road, London, EC1V 2NX, contact hello@monoglyph.co.uk or the contact form. MidiSlayer is in Early Access: we add, polish and sometimes rearrange things between updates, and the price for new buyers can change. What you paid for (every mode, game and score listed when you bought) stays in your licence. We'd rather tell you that plainly than surprise you.

Buying MidiSlayer

The standard licence is sold through Paddle (Paddle.com Market Ltd), our merchant of record and authorised reseller. That means you buy the product from Paddle, and Paddle, not us, handles payment, billing, your invoice, sales tax/VAT, and cancellations and refunds. Paddle's buyer terms apply to that transaction. The software itself is licensed to you by Monoglyph Ltd under the licence terms below. If you're under 18, ask a parent or guardian to buy it for you; Paddle's terms need an adult on the card.

Studio seats are the exception, and it matters enough to say plainly: they do not go through Paddle at all. You buy them from Monoglyph Ltd, we invoice your studio or school directly, payment arrives by bank transfer, and no VAT is added today (see Studio seats below). Nothing in this section about Paddle applies to a Studio purchase. The Studio seats section below sets out what does.

Cancelling and refunds

Refunds and cancellations are handled by Paddle, our merchant of record, under Paddle's refund policy. Paddle took your payment and holds your invoice, so Paddle is also who gives the money back.

If you're a consumer in the UK or EU, your 14-day right to cancel, and how it applies to software delivered the moment you pay, are set out in Paddle's buyer terms, which you accept at checkout. Paddle decides refund requests under its policy; ask at paddle.net.

To ask for a refund, go to paddle.net, the buyer portal run by Paddle. You can also use our contact form and we'll get it in front of Paddle from our side. Either route ends up in the same place. Your statutory rights are unaffected. And the free version exists so you can be sure before you buy.

One thing to know either way: when a purchase is refunded in full, or a card dispute reverses it, the licence key from that purchase is deactivated. Money back means the key comes back too. The free version keeps working.

Studio seats work differently, because they are a business purchase invoiced by us rather than a consumer one sold through Paddle. The paddle.net route above does not apply to them, and neither do consumer cancellation rights, which the law gives to people buying for themselves rather than to a school or a studio. Seats run for the year on your invoice. If something is wrong, email us and we will sort it out between us.

Your licence

The standard MidiSlayer licence is licensed, not sold: buy it once and use it for as long as you like. Activating your licence needs a one-time internet connection; after that you can practise offline. The app still checks your licence and looks for updates when it can, and keeps working when it can't; each check notes which of your devices was seen and when, which is what draws the device list on your account page. Your key activates on up to two of your own devices at the same time; moving to a new machine is one click of "Deactivate on this device" in Settings. That syncs with our licence service to free the slot, so it needs a connection too. If a machine has died, or you're offline, you can free the slot yourself from your account page, or email us and we'll do it. Please don't redistribute the app or resell licence keys: a key that's resold, shared publicly or obtained by fraud can be deactivated. (Buying a copy as a genuine gift is fine.) You may not reverse-engineer, decompile or disassemble the software, except to the extent the law expressly permits (for example, to achieve interoperability). Every update up to and including version 1.x is included with the standard licence; Studio seats go further, as set out below.

What the standard licence covers

The standard licence is for your own playing. That includes your own practice if you happen to teach for a living, and it includes using it on your two devices. What it doesn't cover is using MidiSlayer to teach other people with, or installing it on machines for your students, pupils or staff. That's what Studio seats are for: one seat per person, invoiced annually, and every seat is the full app. If you're not sure which side of the line you're on, email us and we'll tell you straight.

Studio seats

Studio is the teaching licence, and it is the one thing here you buy directly from us. Paddle is not involved: Monoglyph Ltd is the seller, we invoice your studio or school in pounds sterling, payment arrives by bank transfer, and we're not VAT-registered, so no VAT is added today; if that changes we'll say so on your quote before you commit. Seats are priced per seat per year with a five-seat minimum. A seat is one person at a time: when a student moves on, deactivate their seat and hand it to the next one. Seats run for the year you've paid for. When that year ends, unrenewed seats go back to the free version on every machine they're on (we email you three weeks before), and come back the moment the renewal invoice is paid. That is the honest difference from the standard licence: Studio is a subscription, the standard licence is buy-once. In return, active seats always cover the newest version of MidiSlayer, major versions included, at no extra charge. Studio support comes from the developer directly, and we give Studio feedback real weight when planning releases, though what gets built, and when, stays our decision; feedback is not a promise that a particular feature will ship.

Your account (optional)

You never need an account. If you want one, there's a portal at platform.midislayer.com/account where you sign in with a link emailed to you and can see your licence, check which machines it's on, free a device slot and have your key sent again. Keep your sign-in link to yourself; it works once and it's the only thing standing between someone else and your licence. Don't try to break into other people's records or hammer the service. We can suspend an account that's being used to do either, which doesn't touch the licence you paid for. You can ask us to delete your account at any time. Accounts are for ages 13 and over; younger players use the app without one, or through a parent's or school's arrangement.

If you turn on the optional progress sync, we keep a small summary of your progress (settings, achievements, streaks, best scores, recent practice days, and your weekly goal and practice ratings if you use them) so your other machines can pick it up. It's a convenience we run on a best-effort basis, not a guaranteed cloud service: the app is built to work fully without it, and your practice data stays on your devices regardless. You can turn it off or delete the synced summary from the app's settings at any time, and we may need to suspend or withdraw the sync feature itself; none of that touches your licence or your local data.

Your statutory rights

Nothing in these terms affects your legal rights as a consumer. Under the Consumer Rights Act 2015, digital content must be of satisfactory quality, fit for purpose and as described, and you're entitled to a repair, replacement, price reduction or refund if it isn't. We can't and don't try to sign those rights away.

Ours and yours

The MidiSlayer name, app, site and artwork belong to Monoglyph Ltd. Your practice data belongs to you and lives on your device, which is exactly where we want it.

The legal bit

We don't promise the site or app will be uninterrupted or error-free, and we give no warranties beyond the ones the law gives you (which are set out above and stay in full). To the extent the law allows, our liability to you is limited to the price you paid for your MidiSlayer licence (whoever you paid it to). Nothing in these terms limits or excludes liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, or for anything else that can't be limited or excluded under the law, including your statutory consumer rights. These terms are governed by the law of England and Wales and you can bring a claim in the courts of England and Wales. If you live in Scotland or Northern Ireland you can also use your local courts, and nothing here takes away the consumer protections of the country you live in. Questions via the contact form or to hello@monoglyph.co.uk.

Complaints: unhappy with something? Email hello@monoglyph.co.uk with "complaint" in the subject and a director reads it. We're not signed up to an ADR scheme; if we can't sort it out you keep every right to take it further.