Privacy Policy

Who we are

DeFogger is a business book-keeping app made by FinThinkers. When we say “we”, “us” or “DeFogger” we mean the people who run the app. If you have any question about your data, contact us at [your-contact-email].

What we store

Only what you need to use the app:

• Your account details — your business name, your chosen sign-in code, a scrambled version of your PIN (we never store your PIN in plain text), your country, and the phone number you gave us so we can reach you about your plan.
• Your books — the sales, purchases, payments, expenses, stock, customers and suppliers you enter as you use the app. From August 2026 a sale also records the time of day it was rung up, alongside the date, so you can see when your counter is busiest.
• A note of the tax returns you tell us you have filed — if you mark a tax period as filed, we keep the period, the figures you declared, the day you marked it, and the reference number from the tax office if you choose to type one in (you can leave it blank). It is how the app can warn you later that your books no longer match what you filed. We never send anything to a tax authority, and we never file anything on your behalf.
• How you have set the app up — your trade, your currency, your tax settings, which features you have switched on, and the words your shop uses (what you call a pack, how you measure length, what you call a delivery charge). These travel with your business so every device you sign in on looks the same.
• A supplier’s bill you choose to photograph — from August 2026 you can take a picture of a supplier’s bill and have the app read the rows off it instead of typing them. The picture is sent to our own server, read there, and never sent to any other company. No browser can read words out of a picture, which is the only reason this step leaves your phone at all; everything else about importing happens on your device. It needs an internet connection, and if you would rather not send a picture, typing or a spreadsheet works exactly as before.
• A small copy of that bill, kept with the purchase it recorded — when a photographed bill becomes a purchase in your books, we keep a shrunk copy of the picture (a fraction of the size your camera produced) alongside that purchase, so you can show the original if your supplier ever disagrees with what was delivered or charged. It is deleted automatically after three years. It stays inside your own business’s books — no other business, and nobody outside DeFogger, can see it. You can switch this off in Settings → Data, and then photographs are read and thrown away at once. Bill photos are not included in the nightly backup: they are evidence, not accounts, and the backup carries your books.
• What a supplier’s bill calls your products — from August 2026, when you photograph a supplier’s bill and correct a line (“this supplier’s COLCH 0.5 is my Colchicine 0.5mg Tab 100s”), we keep that one correction with your business so the next bill from the same supplier fills itself in. It is the supplier’s wording and your own product — no price, no quantity and nothing about the bill itself. Every correction we reuse is shown on screen with a forget button beside it, and forgetting removes it straight away.
• What selling costs you, if you tell us — from August 2026 you can say what taking money a certain way costs you (a card machine’s cut, for example) and what percentage a staff member earns as commission. Both are optional and blank until you fill them in. They are rates, not payments: we do not pay anyone, and we do not keep any record of wages, salaries or what anyone was actually paid. The app uses them only to work out which of your own products carry the delivery and commission costs you have already recorded, so you can see what each product really leaves you. A staff member’s commission rate is visible to you as the owner and to anyone you have given Settings access.
• Product photos you choose to add — if you put a photo on a product's counter tile, we keep a small copy of that photo with your business so it shows on every device you sign in from. Photos you don't add don't exist; deleting one in the app deletes our copy.
• Which of your devices is issuing bills — from August 2026, so that two devices in one shop can never print the same bill number, we keep a short note of which device is currently the counter: a random name the app makes up for that device, a plain description of it (something like “Chrome on Windows”), how many bills it has not sent us yet, and a changing key it uses to prove it is still the same device. It says nothing about you, your staff or your customers — it is not a location, not a phone number and not a name. It is kept only while it is in use, it goes when you start your books fresh, and if you never use a second device it is barely ever written at all.
• A list of the numbers your documents have been given — from September 2026 we keep, alongside your books, a note of every number your bills, receipts, return notes, credit notes, quotations, orders and vouchers have used, and which of your counters issued each one. It is how a device that has been offline for a week knows where to carry on from instead of handing a second customer a number somebody already has, and it is how we can tell you if two devices ever did print the same one. It is only the numbers and the dates — no customer, no product, no amount, and nothing that is not already in the books you entered. It goes when you start your books fresh, and it is deleted with your business.
• If you collect samples: the sample’s number and the time it was taken — from September 2026, a lab or clinic can switch on sample collection. When a sample is actually drawn, the app gives it a number (S-000001), prints it and its barcode on the paper the patient holds, and keeps that number and the time of the draw with the bill in your books, so the tube can be matched back to the right visit. It is the same information the bill already carries — the visit, the tests billed, and a number — plus the time of day it was drawn. What a technician later reads off the machine is covered separately below. It is switched off for every trade except a lab, so if you do not collect samples none of this is ever written. It goes when you start your books fresh, and it is deleted with your business.
• If you collect samples: your patient’s date of birth and sex — from September 2026 a lab can record these on a customer. They are needed for one reason only: a normal range for a blood test is different for a man and a woman, and different for a child and an adult, so without them the app cannot show the right one. Both are optional, and nothing is ever refused for want of them. They are kept with that customer in your books, they go when you start your books fresh, and they are deleted with your business.
• If you collect samples: the readings your technician types, and your own normal ranges — from September 2026 a lab can record the result of each test on a visit: the figure itself, its unit, who typed it and when. It is kept with your books and it reaches your other devices exactly as a bill does, so a bench computer and a counter computer show the same thing and a broken laptop does not take a patient’s results with it. Your normal ranges are stored the same way — they are yours, typed by you. We never supply a figure of our own, because a normal range depends on the kit and the method your own lab uses. This is health information, and we hold it only to run your lab. We keep no diagnosis and nothing a doctor wrote — the app has no place to put either. It is switched off for every trade except a lab, so if you do not collect samples none of it is ever written. It goes when you start your books fresh, and it is deleted with your business.
• Anything you send us on purpose — if you tap “Tell us something” and write to us, we keep your message and your business name so a person can read it and reply.
• A note when you ask us for help — if you message or call us with a question, we write down which business asked, a line about what you needed, and roughly how many minutes it took. It is how we learn what people find hard, and how we work out when we need more people answering. It is written by us, not taken from your phone, and it never includes anything from your books.
• Words our importer could not read — when you bring in a spreadsheet and it uses a column heading or a measure word we don’t recognise (something like “B.No” or “tola”), the app tells us that word on its own, so the next update reads your file without asking you anything. Only the word. Never a product, a price, a quantity, a recipe, a customer or a supplier. You always see the exact words on screen before they are sent, and you can switch this off completely in Settings → Help & feedback.

Why we store it

• To run the app and show you your own books on any device you sign in from.
• To back it up and keep it in sync, so your books are safe across a refresh, a lost phone or a new device.
• To support you if you ask us for help with a problem.
• To manage your plan (your free trial, renewals and payments).
• To keep your bill numbers straight across your devices — so a phone and a counter PC in the same shop can never hand two customers the same bill number, and so you are told about it if they ever do.
• To make the app read your files better — and only ever from the words it failed to understand, never from what those files are about.
• To show you what a product really leaves you — dividing the costs you have already recorded across the products that caused them. This never adds money to your books and never changes a bill.
• To match a sample tube back to the right patient, if you collect samples — so the number on the tube can be scanned and land on the visit it belongs to, rather than on somebody else’s.
• To show your technician the right normal range, if you collect samples — which is the only reason a patient’s date of birth and sex are needed, and why a reading is kept with the visit it belongs to.

Who can see your data

• You, and any staff members you choose to invite into your own business.
• DeFogger staff — only when it is genuinely needed to keep the service running or to help you with a support request, and only the minimum needed. We do not browse your books, and our owner dashboard is deliberately built to show only whether an account is active — never a business's actual sales, customers or prices.

Each business is walled off from every other — one business can never see another's data.

What we never do

• We never sell your data.
• We never share it with other companies or use it for advertising.
• We never use your numbers for our own purposes.

Keeping it safe

Your data travels over an encrypted (HTTPS) connection, your PIN is scrambled before it is stored, and each business's books are kept separate and private. No system is perfectly secure, but we take reasonable steps to protect your information.

We also keep our own safety copies of the service, so your books can be restored if something goes badly wrong at our end. Those copies deliberately leave out the sign-in keys — so even if such a copy fell into the wrong hands, it could not be used to walk into your shop. Only the owner of DeFogger can make one.

From time to time we practise the recovery — because a backup nobody has ever restored from is a hope, not a plan. That means loading a safety copy into a temporary, separate system, checking the books come back correctly, and then destroying that system. It is done by the owner of DeFogger alone, the temporary copy is never open to anyone else, and it is deleted as soon as the check is finished. Your live books are never touched by it.

Your rights

• Export — you can take your data out at any time, in one tap, from Settings → Data. You get a single file holding your whole books that opens in any browser on any phone or computer, with no app and no internet — plus spreadsheets if you prefer Excel. The same file can be loaded back into DeFogger to rebuild your books. It is not locked with a password, because you need to be able to open it yourself, so treat it like your ledger book: anyone who opens it can read your sales, prices and customers.
• Delete — ask us and we will delete your business and all of its books. (Deleting is permanent.)
• Correct — you can edit your own books and account details in the app whenever you like.

To make a request, email us at [your-contact-email].

Where your data is kept

Your data is stored securely with our cloud hosting provider. If we ever change where or how it is stored in a way that affects you, we will update this page.

A copy also stays on your own device. That is what lets you keep billing when the internet drops, and it is kept in your browser's own storage on the phone, tablet or computer you use — it is not a separate file you can lose, and it is never sent anywhere except to your own cloud books. It holds the same things your books hold, so treat an unlocked phone the way you would treat an open ledger. Signing out, or clearing the app's data in your browser, removes that copy from that device; your cloud books are untouched.

Changes to this policy

If we change this policy, we will update the date at the top. Please check back from time to time.

Contact

Questions about your privacy or your data? Email [your-contact-email] and we will help.