Licence Policy

Every paid licence for The Grammar Index™ includes a small set of fair-use rules so that legitimate customers — including schools, families, and lifetime individual buyers — get the value they paid for, and the price stays low for everyone. This page is the plain-English summary; for the formal legal terms, see our Terms of Service.

At a glance — the don’ts

• Don’t share your activation key — anyone with it can use one of your device seats until you revoke it from My Devices.
• Don’t sell, transfer, or give your key to anyone else — your licence is non-transferable and is issued to you as the named owner (see section 1 below).
• Don’t activate, then immediately uninstall — every activation uses a seat, even if the app is later removed. Use My Devices → Deactivate first if you change your mind.

1. One human owner per licence

A licence is issued to a single individual, family, team, or institution as named on the original order. Reselling, splitting amongst unrelated parties, or transferring ownership to a third party is not permitted. If you need to transfer your licence to a new owner (selling a business, handing down a family licence, etc.), contact support@grammarindex.com and we'll do it manually.

2. What counts as a “device”

A device is a single operating-system install on which the app runs. The same piece of hardware can register as a new device after some events, and each of these uses one seat on your licence:

• Reinstalling or reformatting Windows
• Resetting an iPhone or iPad to factory settings, or uninstalling every copy of The Grammar Index on the device
• Buying a new computer or phone

The web edition counts as one seat across all your browsers. Switching from Chrome to Edge, clearing cookies, or using a private/incognito window does not consume an additional seat — re-activating from a new browser reuses the same Web seat on your licence. (Only the most recently active browser holds a working session at a given moment; opening the app in a different browser will sign the previous one out the next time it goes online.)

None of the events above are unusual — they happen in normal use. We provide grammarindex.com/my-devices as a self-service tool so you can deactivate the old device first and the new one picks up the freed seat.

3. You manage your own seats

You are responsible for managing seat usage across your devices. We provide self-service tools at grammarindex.com/my-devices for reviewing what's activated, deactivating old devices, and renaming devices so the list stays understandable months later. We cannot tell which of your devices is “old” or “new” on your behalf, so the decision sits with you.

4. Reasonable churn is fine

Replacing a broken laptop, upgrading your phone every couple of years, reformatting a Windows install you'd had for ages — all entirely normal. We do not investigate ordinary device-replacement behaviour, even if it consumes several seats over a multi-year licence.

5. Suspicious patterns may be reviewed

Some patterns suggest that a licence is being pooled across more people than the tier was sold for. Examples:

• Dozens of activations from geographically dispersed IP addresses on the same key in a short period
• Repeated reformat-then-reactivate cycles on what appears to be the same device, used to sidestep the seat cap
• The same licence key being used across many unrelated email addresses

If we see signals like these, we may pause the licence and email the registered customer to confirm legitimate use. Pauses are reversible — most cases are resolved by a short conversation. Confirmed abuse can result in the licence being revoked without refund.

6. One-time payment, lifetime use

All payments are one-time. Once your licence is active, it continues to work on your activated devices for as long as the apps and our activation server exist — there are no recurring fees and no subscription renewals. Content updates (new entries, refined examples) are included free for the lifetime of your licence. We do not throttle access for users in good standing.

7. Dormant activations

To prevent old devices you no longer use from permanently occupying a seat on your licence, any activation that hasn't checked in with our server for six months is automatically released back to your seat pool. If you come back to a dormant device later, it will re-activate silently against the same key as long as you have a seat free — or prompt you to deactivate another device from My Devices first.

8. Refunds

If you request a refund through Stripe, the licence is automatically deactivated when the refund is processed. Existing activations on the licence stop working on next online check (within a day). For refund enquiries, contact us via Stripe or at support@grammarindex.com.

9. Changes to this policy

We may update this policy occasionally — for example, to clarify rules or describe new self-service tools. Material changes will be announced via email to active licence holders. Continued use of the apps after a change constitutes acceptance of the updated policy.

10. Questions?

If anything here is unclear, or if you think your use case sits in a grey area, email support@grammarindex.com before activating. We'd rather have an awkward conversation up front than refuse access later.