Terms of Use

Who this is between

The apps are written and published by one independent developer in Vietnam, who also runs this site and can be reached at admin@tuanem.com. Everything below calls that developer me, and calls the person using the app you.

The developer name on a store listing can read differently from one store to the next, so it is not what these terms hang on. They hang on the app being mine, and this site is where that is settled: the apps it links to are the ones covered here.

Apple and Google distribute the apps but are not part of this agreement. For a copy installed from the App Store, Apple's own licence for third-party apps applies as well; where it and these terms cover the same ground and disagree, Apple's wins for that copy.

Four things follow from that, and Apple asks that they be said plainly. This agreement is between you and me alone. Support for an app is mine to provide, not Apple's — Apple has no obligation to help you with one. If an app fails to do what it promises, Apple's only obligation is to refund what you paid for it, and anything beyond that is mine to answer for, as is any claim that an app infringes someone's rights or breaks a law. Apple may enforce these terms against you as a third-party beneficiary of them.

Your licence

An app is licensed to you, not sold. You get a personal, non-exclusive licence to install and use it on devices you own or control, for as long as these terms hold. The app itself, its name, its design and everything in it that isn't yours stays mine.

What you may not do

• Sell, rent, sublicense or redistribute an app, or pass your licence to someone else
• Decompile or reverse-engineer an app, except to the narrow extent your law allows regardless of this clause
• Extract its assets, or republish parts of it as your own work
• Work around a limit, a paywall or a store check, or modify the app to do so
• Send automated or abusive volumes of traffic to any service an app connects to
• Use an app to break the law or to infringe someone else's rights

What you make stays yours

I claim no ownership of anything you create, import or type into an app, and no right to use it. Where a feature has to send your content out — to process it, or to sync it to an account — you allow me only what running that feature requires: putting the content through that job, and holding it where holding it is the job. Nothing beyond that, and the permission ends when the job does, or when you delete the content or the account. What is kept, and for how long, is set out in the Privacy Policy.

What you put into an app is your responsibility: that you hold the rights to it, and that it is legal where you are.

Purchases and subscriptions

Where an app is paid, or offers an in-app purchase or a subscription, the sale is between you and Apple or Google. They take the payment, issue the receipt, renew the subscription and decide refunds under their own store policy — I never see your card and cannot process a refund or cancel a subscription on your behalf.

A subscription renews until you cancel it, which you do in your App Store or Play Store account settings before the renewal date. Prices vary by country and can change; a change never applies to a period you have already paid for.

Ads in free apps

A free app may show ads, and those ads are what pay for it. Where an app sells a way to remove them, that purchase follows the rules above. What an ad network receives is described in the Privacy Policy.

Updates and availability

Apps change. Features get added, reworked or dropped, support for older operating systems ends, and an app may eventually be withdrawn from a store. Where a feature depends on an outside service or data source, that source can change its terms or disappear, and the feature goes with it. None of that is a breach of these terms, and no app is promised to be available without interruption.

Content from elsewhere

Where an app shows data, media or links from an outside source, that material belongs to whoever published it. I don't control it, don't endorse it, and can't answer for it. A link that opens outside the app takes you somewhere with its own terms.

No warranty

The apps are provided as they are. I write them carefully and use them myself, but I can't promise that one is free of defects, that it fits a particular purpose of yours, or that every result it produces is correct. Treat what an app tells you as something to check rather than as the sole basis for a decision with money, health, legal or safety consequences attached.

Liability

As far as the law where you live permits, I am not liable for indirect or consequential loss arising from an app — lost data, lost profit, lost time, or a decision made on something an app displayed. Where liability cannot be excluded, it is capped at what you paid for that app in the twelve months before the claim, which for a free app is nothing.

None of that touches what the law does not allow to be limited: liability for death or personal injury caused by negligence, for fraud, for anything done deliberately or through gross negligence, and any consumer right your local law does not let you sign away. Where a court finds a limit above goes further than your law permits, it applies only as far as that law allows and the rest of these terms stand.

Ending this agreement

You end it by deleting the app. I may end your licence if you break these terms, and the sections on liability, warranty and content ownership continue to apply afterwards.

Law and disputes

Vietnamese law governs these terms, and the courts of Hanoi hear any dispute under them — except where the consumer-protection rules of the country you live in say otherwise, in which case those rules apply. If a clause here turns out to be unenforceable, the rest still stands.

Most things sort themselves out over email long before any of that matters: admin@tuanem.com.

Changes

When these terms change, I update this page and the date below. Using an app after a change means accepting the new version; if you don't, deleting the app ends the agreement.