Last updated: 2026-11-11 · Applies to all dottools apps and dottools.top
These Terms of Service (“Terms”) are an agreement between you and dottools (“we”, “us”; operated by Peter Swan) and cover our Android apps — Weight Tracker, QR Code Pro, WiFi Manager and Food Diary & Water — together with this website, dottools.top (the “Services”).
By installing or using a Service you agree to these Terms. If you do not agree, please do not use the Service, and you may uninstall it at any time. Downloading an app from Google Play is also governed by Google Play’s Terms of Service; where Google’s mandatory store terms conflict with these Terms, Google’s terms prevail for that part.
You must be at least 13 years old to use the Services. If you are below the age of legal majority where you live, you may only use them with the involvement of a parent or guardian.
Each dottools app is a small, local-first Android utility. The Services do not require an account, a sign-up, or access to your Google Account"s other data. The records you create — weights, goals, measurements, QR codes, network scans, meals and water — are stored on your device and are not sent to us (see the Privacy Policy for the exact data flows, including the advertising and diagnostics SDKs our free apps rely on).
The Services are informational and general-purpose tools. They are not a medical service, a medical device, or a substitute for professional advice.
Subject to these Terms, we grant you a personal, non-exclusive, non-transferable, revocable licence to install and use each app on devices you own or control, for your own private, non-commercial use.
You may not: (a) copy, sell, rent, sublicense, redistribute or otherwise make the apps available to third parties, except as permitted by the app store you obtained them from; (b) reverse-engineer, decompile, disassemble or attempt to extract the source code, except to the extent that applicable law expressly permits it; (c) remove or obscure copyright, trademark or attribution notices; or (d) use the Services to build a competing product by systematic extraction of their content or features.
The apps are distributed through Google Play and are subject to that store’s rules on installation, updates, refunds and device compatibility.
You are responsible for how you use the Services. You agree not to use them:
Weight Tracker and Food Diary & Water are self-tracking tools. Decisions you make about diet, exercise or health on the basis of what you enter are yours; the apps simply record and display what you tell them.
The free versions of the apps show advertising served by third parties, and some features may be offered through an optional in-app purchase (for example, removing ads). Purchases are processed by Google Play Billing; we never see or store your card, PayPal or other payment details.
Prices, what a purchase includes, and whether an app remains free are set by us and shown in Google Play at the time of purchase; we may change them for future purchases. Because the transaction is between you and Google, refunds are handled under Google Play’s refund policy — we cannot issue, reverse or modify a Play charge. If a purchase does not unlock what it should, contact us at [email protected] and we will fix it or help you obtain a refund.
A purchase unlocks the app on the Google account that made it, and can normally be restored on your other devices signed in to that same account.
The apps and this site rely on services operated by others, including Google Play (distribution, billing), Google AdMob and Meta Audience Network (advertising), Firebase Analytics (usage statistics), Firebase Crashlytics (crash reports) and Cloudflare (hosting this site). Those services are governed by their own terms and privacy policies, and their availability is outside our control. A list with links is in the Privacy Policy.
We are not responsible for the content, policies or practices of third-party sites that you reach from the Services (for example a QR code that opens an external link).
Read this section before relying on any number in Weight Tracker or Food Diary & Water.
The apps calculate figures such as BMI, body-fat estimates and calorie or nutrition summaries from values you enter plus published formulas. Those figures are estimates for general information and self-tracking. They are not a medical diagnosis, not a treatment plan, not a nutrient assessment by a qualified professional, and they cannot account for your individual circumstances (body composition, medical conditions, medication, pregnancy, age, or the accuracy of what you typed in).
The apps are not medical devices and are not intended to diagnose, treat, cure, monitor or prevent any disease or condition. Nothing in them is a substitute for advice from a doctor, dietitian or other qualified professional. Do not delay seeking professional advice because of something you read in an app, and do not start, stop or change any treatment or diet based on it. If you have or suspect a medical condition — including disordered eating — talk to a qualified professional.
We do not promise any health outcome. Weight change depends on many factors outside the apps, and the apps do not provide a diet, a plan to follow, or a guarantee of any result.
You own everything you enter into the apps. Because it stays on your device, we hold no copy of it and cannot recover it for you: uninstalling an app, clearing its storage, losing or resetting the device, or a storage failure can delete your records permanently. If the records matter to you, use the app’s export/backup feature and keep the file somewhere safe. You are also responsible for the security of your device and for the accuracy of what you record.
We may update, change, add or remove features, and we may stop offering an app or a particular feature (for example because a store or platform no longer supports it) at any time. We may also release a version that no longer supports an older Android version. We do not guarantee that any Service will always be available, uninterrupted, error-free, or compatible with your device.
Because the apps work offline, an available version installed on your device will generally keep working even if we stop publishing updates — but online features that depend on third parties (ads, purchases, Play services) may stop.
The apps, this website, and their content — including the names, logos, designs, graphics, text and software — belong to us or our licensors and are protected by copyright and other laws. The licence in section 2 is the only right you receive in them. Google Play, Android and Google are trademarks of Google LLC; we are not affiliated with or endorsed by Google.
To the fullest extent permitted by applicable law, the Services are provided “as is” and “as available”, without warranties of any kind, whether express, implied or statutory, including the implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement. We do not warrant that the Services will be error-free or free of harmful components, that calculations or estimates will be accurate for you, or that defects will be corrected.
Nothing in these Terms excludes or limits any warranty or right that cannot be excluded or limited under applicable law — including, for consumers in the EU, the UK and other jurisdictions, mandatory statutory guarantees and remedies.
To the fullest extent permitted by applicable law, we will not be liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of profits, data, records, health-related opportunity, or goodwill, arising out of or relating to your use of (or inability to use) the Services — whether based on warranty, contract, tort (including negligence) or any other legal theory, and even if we have been advised of the possibility of such damage.
To the fullest extent permitted by applicable law, our total aggregate liability for all claims relating to a Service will not exceed the greater of (a) the amount you paid us for that Service in the twelve months before the claim arose, or (b) USD 10.
Nothing in these Terms limits or excludes liability that cannot lawfully be limited or excluded, including for death or personal injury caused by our negligence or for fraud. If you are a consumer, you keep every mandatory right granted to you by the consumer law of your country of residence.
You may stop using the Services and uninstall the apps at any time. We may suspend or discontinue a Service (in whole or in part) as described in section 8. Sections that by their nature should survive termination — including intellectual property, disclaimers, limitation of liability and governing law — survive.
We may revise these Terms to reflect changes in the Services, in law, or in how we operate. The revised version will be posted on this page with a new “last updated” date. If a change materially affects your rights, we will additionally give notice in the app before it takes effect. Continuing to use the Services after the effective date means you accept the revised Terms; if you do not, uninstall the app. Changes do not apply retroactively.
These Terms, and any dispute or claim arising out of or in connection with them or the Services, are governed by the laws of the People’s Republic of China, without regard to its conflict-of-law rules.
This does not remove protection you cannot waive. If you are a consumer resident in the EU, the UK, or another jurisdiction whose law gives you mandatory protections (including the right to bring proceedings in your local courts), nothing in this section deprives you of those protections or of the local forum they provide.
Before starting any formal proceedings, please write to [email protected] — most issues involving a one-person studio are resolved in a short support thread.
These Terms are the entire agreement between you and us about the Services and replace any earlier discussion. If a provision is found unenforceable, it will be limited to the minimum extent necessary and the rest will remain in force. A failure to enforce a provision is not a waiver. You may not assign your rights under these Terms; we may assign ours to a successor of the Services. There is no agency, partnership or employment relationship between us.
Notices to you may be given by posting them on this page or in the app; notices to us should be emailed to [email protected].
dottools — Peter Swan. Questions about these Terms, a purchase, or anything else: [email protected] (a real person reads every message, usually the same day).