Terms of use

Who’s behind it

Cheflex is run by Martin Papoušek, sole trader, Business ID (IČO) 05006864, registered office Bezručova 4201, 430 03 Chomutov, Czechia, entered in the Trade Licensing Register (Živnostenský rejstřík, Městský úřad Kadaň). You can write to cheflex@email.cz.

What Cheflex is

A cooking tool: it draws up a suggested meal plan for the period you choose, splits the portions according to the goals of the people at your table and writes the shopping list. It’s an information and organisation aid, not a health service. It isn’t a medical device, it doesn’t diagnose or treat anything, and it doesn’t replace a doctor or a dietitian.

It runs on the devices and system versions the store lists for the app; you can also try the free version in a browser at cheflex.app. It needs the internet only to download, to buy, for pairing phones, and for the statistics if you switch them on.

Minimum age

Cheflex is for people aged 16 and over. A meal plan for a child in the household is set up by an adult — a parent or other legal guardian — who also judges whether the portions suit the child. The app plans for children from the age of 3; a toddler needs different food from what it cooks.

When to talk to a doctor first

If you’re being treated for any illness or take prescription medication — diabetes, say, or a kidney, liver, thyroid or heart condition. If you have, or have ever had, an eating disorder. If you’re meant to follow a diet for medical reasons. If you’re cooking for a child who is ill, overweight or underweight, or on a special diet — that’s a question for the paediatrician.

If you’re pregnant or breastfeeding, tick that in the setup: the app then won’t cut calories and works out your maintenance intake instead. How much more to eat is for your doctor or midwife to say — the app doesn’t work that out.

Cheflex knows nothing about your health — it works only from what you give it.

Fat loss has limits

When you’re losing fat, the app takes off 12–20% depending on the goal you pick, and never goes below 1,200 kcal for a woman, 1,500 kcal for a man or 1,350 kcal if you don’t give your sex. If you’re underweight it plans no deficit at all and works as if your goal were “Maintain”. Faster fat loss isn’t better — in a deep deficit the body takes from muscle.

If you’re losing weight faster than planned, or the meal plan is making you miserable, stop using it and talk to someone qualified. Help with eating disorders: anabell.cz in Czechia, chutzit.sk in Slovakia, centrumzaburzenodzywiania.pl in Poland, essstoerungen.bioeg.de in Germany, sowhat.at in Austria, beateatingdisorders.org.uk in the UK and bodywhys.ie in Ireland. Anywhere else, talk to your doctor — they’ll point you in the right direction.

Allergens — read this even if you read nothing else

Cheflex can hide meals that contain ingredients you’ve excluded. Don’t rely on that being complete.

The filter reads the recipe’s ingredients. Seasonings and condiments don’t go into it — soy sauce, mustard or Worcestershire sauce won’t hide a meal even when you’ve excluded their allergen. Stock is the exception: there the app itself tells you to pick a gluten-free, celery-free version.

The filter doesn’t know what’s in the particular product you buy, and it knows nothing about cross-contamination — in the factory or in your own kitchen. One pot is cooked for everyone, so anyone’s allergy at the table applies to the whole meal.

If you have an allergy that could land you in hospital, read the label on every ingredient and every seasoning — every time, before you shop and before you cook. Treat the filter as a help that saves you scrolling, not as a safety check.

The numbers are a good estimate

Calories and nutrients are worked out from reference values for ingredients, not from laboratory analysis. The real portion varies with what you buy and how you cook it.

Your daily intake is calculated with the Mifflin–St Jeor equation from your weight, height, age, sex and activity. It’s an estimate for a healthy person, not an individual recommendation. Height and age aren’t required; leave them out and the app uses 172 cm and 38 years, and the error can then be over 200 kcal a day. Where the numbers come from is in the Menu under “How the numbers work”.

The app doesn’t know how much you eat away from home. For a meal where you tick “has it elsewhere”, it estimates what you ate as a share of your daily target — that’s an estimate, not a record.

You’re the cook, with your own ingredients

Cheflex is a helper: it suggests what to cook and how much of what to buy. The shopping, the cooking and the eating are yours. You choose the ingredients, you handle them, you read the labels, and you know what agrees with you and what your doctor has told you. What ends up on your plate — the choice of meals, the shopping, the preparation, the hygiene, and whether the meal plan suits your health — is your responsibility, not the app’s.

I stand behind Cheflex calculating the way it’s described under “How the numbers work”. I don’t promise that it will never have a bug, that it will run on every phone, or that it will get you to the result you’re after — plenty outside the app has a say in that: how you cook, how you sleep, how you move and how things are going for you right now.

I’m not liable for loss or damage that arises from what you do with the app’s advice. The only things I can’t exclude are the ones the law doesn’t let me exclude: liability for injury to life or health, for loss or damage caused deliberately or through gross negligence — and for the app doing what it promises; for that core duty of mine I’m liable even for an ordinary mistake. That liability stays exactly as the law sets it, and nothing in these terms cuts down the rights the law gives you as a consumer.

Free version and full version

Cheflex is free to download. The free version has 100 recipes, cooks for up to two people and has no plan themes. The allergen and diet filter, the shopping list, ratings and all the calculations work in full.

You unlock the full version with a one-off purchase in the App Store or on Google Play. It costs €9.99 incl. VAT; in other currencies (such as £ or NOK) the store shows you the exact price before you confirm. You pay once — no subscription, nothing renews by itself and no further payments. The purchase belongs to your store account and works on every device signed in with the same account: on another phone, or after reinstalling, you get it back with the “Restore purchase” button. It doesn’t carry over between the stores (App Store and Google Play). On iPhone you can share it with your family through Family Sharing. By buying, you agree to these terms.

Your purchase contract is with the store — Apple Distribution International or Google Commerce Limited — which bills you and accounts for the tax. I never see your card or payment details. Refunds and payment disputes are handled by the store under its own terms. The full version is digital content that unlocks as soon as you’ve paid. Your statutory 14-day right to cancel doesn’t apply to it if you expressly agreed to immediate delivery and acknowledged that you lose that right as a result. Whether the store asks for that consent, or lets you cancel the purchase anyway, depends on its terms. On iPhone, Apple’s standard licence terms apply alongside these: apple.com/legal/internet-services/itunes/dev/stdeula.

The purchase gives you a personal licence: you may use the full version for yourself and your household on devices signed in with your store account. It can’t be passed on to other people or resold. You unlock the content as it stands on the day you buy; the purchase doesn’t entitle you to new recipes or features — but everyone who has paid gets them at no extra cost for as long as the app runs.

One thing I always promise: the unlocked content will work as described here and in the store, and you’ll get the fixes needed to keep it that way — after a phone system update, say. If something doesn’t work, write to me and I’ll fix it; if it can’t be fixed, you’re entitled to a price reduction or a refund — through the store, and if the store doesn’t provide it, directly from me. These rights come from the law, and nothing in these terms limits them.

If I ever shut Cheflex down, I’ll announce it at least 12 months in advance on cheflex.app and in the app’s update notes. What you already have on your phone carries on working.

To make a complaint, write to cheflex@email.cz — what doesn’t work, which version of the app you’re on, and what you expected. I’ll reply within 14 days. I’m liable for the full version working as described for two years from the purchase. Refunds for the purchase are handled by the store.

What belongs to whom

The recipes themselves aren’t mine — cooking is shared knowledge and a method as such isn’t protected by copyright. What is mine is the way Cheflex is written and worked out: I wrote and arranged the recipe texts, and the calculations, the texts, the artwork and the name are mine too.

The recipe collection is also a database I’ve put years of work into, and as a database it has protection of its own (section 88 ff. of the Czech Copyright Act, No. 121/2000 Coll.). No substantial part of it may be extracted or re-utilised — neither in one go nor bit by bit, over and over.

Feel free to: cook from the recipes, cook them for anyone you like, copy them out, photograph one and send it to a friend, talk about them.

Not okay: copying the collection or a chunk of it somewhere else, building your own app or website out of it, selling it on, getting round the full-version lock, or taking the app apart to pull the collection out of it. If you’d like to use something in another way, write to me — we’re more likely to agree than not.

If you send me a recipe

I’m happy to add your own recipes to the collection. By sending me one, you agree that I may edit it, translate it and include it in Cheflex, including the full version, free of charge and with no limit in time or territory. Send only a recipe you wrote yourself — not one copied from a book or a website.

Don’t send anything that breaks the law or infringes someone else’s rights.

Your data and backups

Cheflex has no account and no login. Everything you enter stays on your phone, apart from what you choose to send to a Teammate’s phone (see “Pairing two phones”). What the app does and doesn’t do with it is set out in the Privacy policy. I hold no copy, and if you lose your phone or your data, I can’t restore it. Backing up your phone is down to you — your data won’t move to a new phone by itself; only your phone’s backup takes it across. You restore the full version there from your store account. Pairing with Teammates doesn’t move across with the backup — after a restore, pair the phones again with a new invite.

You can stop using the app at any time by uninstalling it; that also deletes all the data that was in it.

Pairing two phones (Captain and Teammates)

Cheflex can pair the main phone — the one you run the household from — with the phones of other people in your household. In the app the main phone is called the Captain and the others are Teammates. It’s an optional extra and it’s free. It isn’t part of the full-version purchase, and the full-version price doesn’t cover it. The app works in full without it.

The phones send data to each other through a server I run on Cloudflare. The data is encrypted on the phone itself, with a key the server never gets — neither I nor Cloudflare can read what’s in it. Exactly what passes through the server, and how long it stays there, is set out in the Privacy policy.

I provide pairing as it is, and I don’t promise it will run without interruption. I may limit it, change it or end it; where I can, I’ll give at least 30 days’ notice on cheflex.app and in the app’s update notes. If it ends, the household stays whole on the main phone. A Teammate’s phone keeps only its own member’s thumbs and details and starts a household of its own — the meal plan and shopping list from the main phone are removed from it. As pairing isn’t part of the full version, an outage or its ending doesn’t entitle you to a price reduction or a refund for the full version. This doesn’t limit the rights the law gives you.

Give an invite (a code, a QR code or a link) only to the person in your household it’s meant for. Whoever uses it will see on their phone the meals that have been put together, the shopping list, and the household members’ names, animals, portion sizes and thumbs, the household’s notes on those meals — plus the body details and allergies of the member the invite is for. They won’t see anyone else’s weight, height, age or goal. An invite can only be created for a member aged 16 or over who isn’t entered as a child in the household. An invite is valid for 10 minutes and works once.

A Teammate can tick off the shopping, give meals a thumb for themselves and change their own body details. They can’t put the meal plan together, swap meals, or change tastes, names or household members — all that stays with the main phone. You can end the pairing at any time: on the main phone under Menu → Household members, on a Teammate’s phone under Menu → Connection; “Erase all data” on the main phone ends it too. Who you let into your household is your responsibility.

The Captain can also have a mirror — a second device of the same person, typically a tablet. The mirror sees the whole household, including every member’s body details and allergies, ticks off the shopping and gives thumbs. It starts planning once it takes the captain’s armband; the phone then becomes the mirror and can take the armband back. It is free, not part of the full-version purchase, and not a backup. After the armband changes hands, the full version unlocks on that device only through a purchase in its own store (iPhone and iPad share the App Store, Android uses Google Play).

Pairing isn’t a backup. The household lives only on the main phone — if you lose that phone, a Teammate can’t bring the household back.

If something goes wrong

Write to me at cheflex@email.cz — most things get sorted that way.

This relationship is governed by the law of Czechia. If you’re a consumer, that doesn’t take away any protection you have under the mandatory rules of the country where you live. A dispute we can’t settle between us you can, as a consumer, also take to free out-of-court resolution at the Czech Trade Inspection Authority, Central Inspectorate — ADR Department, Gorazdova 1969/24, 120 00 Prague 2, coi.gov.cz/informace-o-adr. If you live in another EU country, the European Consumer Centre in your country (the ECC-Net) will help you with a cross-border dispute free of charge.

I write these terms in Czech and translate them into the other languages. The version in the language in which you accepted these terms is binding; if anything in it is unclear, it’s read in your favour. I’ll fix any translation error as soon as I hear about it. And if a court ever struck out a sentence in here, the rest still stands.

Changes to these terms

If I change these terms — because the app or the law has changed, say — I’ll announce it at least a month in advance on cheflex.app and in the app’s update notes, and publish the new version with the date it takes effect. A change never takes away or waters down what you’ve already paid for. If you don’t agree with it, you can stop using the app and uninstall it. The app’s content isn’t covered by this — recipes, fixes and improvements keep arriving and aren’t announced. The wording in force on the day you bought stays in the app, even with no signal; if you write to me, I’ll send you older versions. If someone else ever takes over Cheflex, this agreement passes to them too — along with everything you’ve paid for. I’ll let you know the same way as a change to these terms.