Privacy policy
badmintho keeps your data on your device. Your matches, workouts and health data stay on your iPhone and Apple Watch and in your own Apple Health. red8.io operates no server that receives them, and there is no account to create with us. Only two things ever leave the app for us, and only if you act: anonymous usage counts, off unless you switch them on, and your email address if you join the Community waiting list. Both are described in full below.
Last updated: 11 October 2026
This policy covers two separate things: the badmintho app, and the badmintho.com website. They handle data very differently, so they are described separately.
The badmintho app
Your matches and workouts
Scores, match history, player names and settings are stored on your device. Each match is also saved to Apple Health as a badminton workout, together with the heart rate, active energy, distance and movement recorded during play. Apple Health is Apple’s, not ours — what you keep there, and who else may read it, is governed by your own Health privacy settings.
badmintho asks for Health access in two directions: read, to show your heart rate and activity during a match and your history afterwards, and write, to save each match as a workout. You can withdraw either at any time in Settings › Health › Data Access & Devices, and the app keeps working without them.
Movement and jumps
Jump detection and movement measurement use the motion sensors in your iPhone and Apple Watch. That data is processed on the device to produce the statistics you see; it is not transmitted anywhere by badmintho.
Courts and your location
badmintho can pre-fill the court you are playing at. If you switch on Tag matches with the court I’m at in Settings — off unless you enable it — the app reads your current position when you set up a match, compares it with the courts you have saved as favourites, and suggests the nearest one within about 150 metres. You can change or clear the suggestion before the match starts.
That comparison happens entirely on your device. Your own position is never stored and never leaves your phone — what gets saved with the match, in Apple Health, is the court you ended up with: its name and its coordinates, which are the venue’s, not yours. iOS asks your permission the first time; decline and everything else in the app carries on working.
Playing with other people
Hosting or joining a match on another device uses Bluetooth, directly between the devices in the room. The score and the players’ names travel over that link and nowhere else — there is no red8.io server in the middle, and no copy is kept by us.
Purchases
badmintho Pro is sold through Apple. Payment details are handled by Apple under Apple’s privacy policy and never reach us; we receive only anonymous sales reports.
Anonymous usage counts — off unless you turn them on
The first exception to everything above is off until you choose otherwise. In Settings you can switch on Share anonymous usage stats. While it is off — which is how the app arrives — nothing is recorded and no request is ever made.
With it on, badmintho counts a small, fixed set of events about the paid features: the upgrade screen being shown, a trial starting, a trial converting, a locked feature being tapped, and a match card being shared. Those counts build up on your device as daily totals and are sent to our own server once a day, as numbers: how many times each event happened, on which day.
With it on, badmintho also asks Apple once, after it is installed, whether an Apple Ads campaign led to the install. If one did, Apple answers with the campaign, ad group and keyword numbers, and badmintho adds them to those daily totals: how many installs came from that ad, and how many of them started or converted a trial. Apple sends nothing that identifies you or your device, and badmintho sends nothing of the kind to us. With the setting off, Apple is never asked.
What is not in them: any identifier for you or your device, your name, your scores, your matches, your health data, or a record of individual taps. The totals arrive with nothing attached that could point back to you. Switching the setting off stops recording at once and discards anything not yet sent.
The Community waiting list
The second exception is the waiting list for badmintho Community, in Settings. Nothing is sent unless you type an email address and join. Joining sends that address to our own server, together with a random code generated on your device, the word “ios” and the app’s version number — nothing about your matches, your health or your location.
We use the address only to tell you when Community launches and to recognise you as a founding member then. It is not used for marketing, not shared with anyone and not sold. Leaving the waiting list in Settings deletes it from our server, or write to privacy@red8.io and we will delete it.
No advertising, no third-party SDKs
Apart from those two opt-in exceptions, the app carries no advertising, no crash-reporting service and no third-party software development kit that collects data about you. Nothing follows you across other apps or websites — which is why iOS never shows you a tracking prompt.
This website (badmintho.com)
The website is a different matter, and we would rather say so plainly than bury it. badmintho.com uses Google Analytics to understand how the site is used and whether our advertising is working — but only if you agree to it first.
Nothing loads until you choose
On your first visit you are asked whether to allow analytics. The default is no: until you accept, no analytics runs and nothing is sent to Google. Declining costs you nothing — the site works identically either way.
Your choice is remembered in a cookie named zaraz-consent. It is set whether you accept or decline, because either answer has to be remembered. If you accept, Google Analytics also sets a first-party cookie so that repeat visits from the same browser are counted as one person rather than several; if you decline, it is not. To change your mind, clear your cookies for badmintho.com and the question will be asked afresh.
What is collected if you accept
- Which pages you viewed, when, and how long you stayed.
- Where you arrived from — a search engine, an advertisement, or another site.
- Which links you clicked, and where on the page they were. This is how we learn whether people download the app from the top of the page or the bottom.
- Your approximate location — country and city — worked out from your IP address, and your browser, operating system and screen size.
Your IP address is used by Google to derive that approximate location and is then discarded; it is not stored in our reports. We do not collect your name, your email address or anything else that identifies you personally, and we have not enabled Google’s advertising or remarketing features, so this data is not used to follow you around other websites.
Who is involved
The measurement is set up through Cloudflare Zaraz, which also serves and protects this site, and the resulting data is sent to Google Analytics. The tags run on Cloudflare’s network rather than in your browser, so no Google script is loaded onto the page. Both companies act as processors for us and handle the data under their own privacy policies.
We keep analytics data for two months — the shortest period Google allows — after which Google deletes the underlying records automatically. Only aggregate counts remain in our reports after that, and those describe no individual visit.
The Android test list
The Android test list is the other place where we hold an email address, and only if you gave us one. The Android closed test asks people who want to take part to register their interest, because Google Play needs a list of testers before a test can run.
That form is not on this website — it is hosted on cortex.red8.io, our own system, and you reach it by following a link. You confirm the address by opening a message we send you, and nothing is stored against it until you do. We keep it to send you the Play opt-in link and occasional notes about the test, on the basis of the consent you gave by confirming. It is not used for marketing, not shared with anyone and not sold. Write to privacy@red8.io and we will delete it.
Children
badmintho is not directed at children under 13, and we do not knowingly collect data from them.
Your rights
There is no account to create with us and no profile built about you, so for most people there is nothing for us to retrieve, correct or delete — the app’s data is on your device and goes when the app does. The exceptions are the Community waiting list and the Android test list above: if you joined either, we hold the email address you gave, and you can have it corrected or deleted by asking — leaving the waiting list in Settings also deletes it. For that, for anything concerning the website analytics, or simply to ask what we hold, write to us and we will answer.
Contact
Questions about this policy: privacy@red8.io.