Terms of Service

Grumble · Effective 20 August 2026 · Last updated 20 August 2026

These terms are an agreement between you and Mutterware ("we", "us"), covering your use of the Grumble app. By using Grumble, you accept them. If you don't, please don't use the app.

Mutterware is an independent software business operating from Victoria, Australia. Our full legal and contact details are published on the Grumble App Store listing, and are available on request at studio@mutterware.com.

1. Not medical advice

This is the most important section.

Grumble is a motivation and estimation tool. It is not a medical device, and it does not provide medical advice, diagnosis, or treatment.

Every number the app shows you is an estimate. Step and distance figures come from your phone's sensors via Apple Health and carry whatever error those sensors have. Calorie figures are calculated from your step count and the body weight you entered, using a general model that cannot account for your individual physiology, terrain, pace, or health conditions. Treat them as rough guidance for motivation, never as clinically accurate measurements.

Do not use Grumble to make medical decisions. Consult a qualified healthcare professional before starting or changing an exercise routine, particularly if you have a heart condition, are pregnant, are injured, or have any other medical concern. If you feel unwell while exercising, stop and seek medical attention.

You are responsible for exercising safely and for being aware of your surroundings while using the app.

2. Your licence to use Grumble

We grant you a personal, non-exclusive, non-transferable, revocable licence to use Grumble on Apple devices you own or control, in line with Apple's App Store Terms of Service.

You may not: reverse engineer, decompile, or disassemble the app; redistribute, resell, rent, or sublicense it; remove any proprietary notices; or use it in a way that breaks any applicable law.

The app, its artwork, its characters (including Mosskip), its animations, its text, and its design are our property or our licensors', and are protected by copyright and other intellectual property laws. Your licence to use the app does not transfer ownership of any of it.

3. Grumble Pro

Grumble is free to download and use. Some features — including monster stages beyond Grumpling — require Grumble Pro, a one-time purchase.

Early access

Version 1 of Grumble is sold as early access: a one-time purchase, at a launch price, in an app that is still being built out. That is the offer for this version. It is not a commitment that Grumble will always be sold this way.

We may change how Grumble is sold to new users at any time — raise or lower the price, stop offering the one-time purchase, or move to a subscription. Any such change applies only to purchases made after it, and never reaches back into a purchase you have already made.

Refunds

We do not process payments and cannot issue refunds directly. All purchases are handled by Apple and are subject to Apple's refund policy. Request a refund through Apple at reportaproblem.apple.com.

If Apple refunds or revokes your purchase, your access to Pro features ends.

This does not limit any refund or remedy you are entitled to under the Australian Consumer Law — see section 7.

What "lifetime" means

"Lifetime" means the lifetime of the app — for as long as we continue to operate and distribute Grumble. It is not a guarantee that the app will exist forever, that any particular feature will remain unchanged, or that we will not discontinue the app. See section 5.

What we do promise, about the purchase you made: everything included in Grumble Pro at the time you bought it stays yours, permanently and at no further cost. If we later introduce a subscription, we will not use it to take back or re-paywall something your purchase already covered. Features built after that point may sit outside it — that is the part we cannot promise in advance, and we would rather say so here than imply otherwise.

4. Your content and your data

Anything you enter — your display name, your logged activities, your journal — stays on your device. We do not collect it, cannot see it, and claim no ownership of it.

Because it lives only on your device, you are solely responsible for it. Deleting the app permanently deletes everything, with no backup and no way for us to recover it. See the Privacy Policy for the full picture.

5. Changes and availability

We may add, change, or remove features, and we may discontinue Grumble entirely. We will try to give reasonable notice of a discontinuation where we can, but we are not obliged to keep any specific feature or the app itself available indefinitely.

We do not guarantee the app will be uninterrupted, error-free, or compatible with every future version of iOS.

6. Australian Consumer Law

Our goods and services come with guarantees that cannot be excluded under the Australian Consumer Law.

Nothing in these terms excludes, restricts, or modifies any guarantee, right, or remedy you have under the Australian Consumer Law (Schedule 2 to the Competition and Consumer Act 2010 (Cth)) that cannot lawfully be excluded, restricted, or modified. Where any provision of these terms would do so, that provision does not apply to you.

For a major failure you are entitled to a replacement or refund, and to compensation for any other reasonably foreseeable loss or damage. If the failure does not amount to a major failure, you are entitled to have the problem fixed within a reasonable time, and if this is not done, to a refund.

Sections 7 and 8 apply only to the extent permitted by law, and are read subject to this section.

7. No warranty

Subject to section 6, and to the fullest extent permitted by law, the app is provided "as is" and "as available", without warranties of any kind, whether express or implied, including implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement.

We do not warrant that the app's estimates are accurate, that it will meet your requirements, or that defects will be corrected.

8. Limitation of liability

Subject to section 6, and to the fullest extent permitted by law, we will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of data, profits, or goodwill, arising from your use of or inability to use Grumble.

Our total liability for any claim relating to the app will not exceed the amount you actually paid for it, or AUD 100, whichever is greater.

Nothing in these terms limits liability that cannot be limited by law, including liability for death or personal injury caused by negligence, or for fraud.

9. Apple

These terms are between you and us, not Apple. Apple is not responsible for the app or its content, and has no obligation to provide support for it.

Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you. In the event of any failure of the app to conform to an applicable warranty, you may notify Apple, and Apple may refund the purchase price; to the maximum extent permitted by law, Apple has no other warranty obligation whatsoever with respect to the app.

10. Termination

Your licence ends automatically if you breach these terms. You can end it at any time by deleting the app.

11. Governing law

These terms are governed by the laws of Victoria, Australia, without regard to conflict of law principles. Any dispute will be subject to the exclusive jurisdiction of the courts of Victoria, Australia — except where mandatory local consumer law gives you the right to bring a claim where you live.

12. Changes to these terms

We may update these terms. Material changes will be posted here with a new "last updated" date. Continuing to use the app after a change means you accept the revised terms.

13. Contact

Mutterware
studio@mutterware.com
Victoria, Australia