This statement covers IsoLib, the Isotope Library, our app for iPhone and Android
(com.stroetenga.IsoLib). It explains what stays on your phone, what the app fetches from the IAEA, what
the ads involve, and what we never see.
Who is responsible
Stroetenga Technologies B.V.
Chamber of Commerce (KvK): 77277260
VAT (BTW): NL860956817B01
Email: privacy@stroetenga.nl
We are the data controller under the General Data Protection Regulation (GDPR) for what this statement describes. A question about anything on this page reaches us at the email address above.
What IsoLib is
IsoLib is a reference library of nuclides: half-lives, decay modes and gamma lines. There is no account and no login. The nuclide data comes from the International Atomic Energy Agency (IAEA).
What is stored on your phone
IsoLib keeps these files in the app's own storage:
| File | What it holds |
|---|---|
nuclides.csv, library.json |
the nuclide catalogue, and when and where it was downloaded |
gammas.json |
the gamma lines of the nuclides you looked up |
mylist.json |
the nuclides you starred |
recent.json |
the last 20 nuclides you viewed |
settings.json |
the language you chose |
These files stay on your phone, are never sent to us, and are removed when you delete the app. They are strictly necessary for the app to work as you expect, so they do not need your consent.
What IsoLib fetches from the IAEA
IsoLib contacts the IAEA's nuclear data service (nds.iaea.org) in two cases only:
- when you tap Update library, to download the current nuclide catalogue;
- when you look up the gamma lines of a nuclide whose lines are not on your phone yet, or are out of date.
The request names only the data asked for (for example a nuclide such as Cs-137) and the app's name and version. Like any web server, the IAEA's server sees your phone's IP address. Nothing about you is sent. The IAEA's own terms of use apply to its service.
Advertising
IsoLib is free and shows one banner ad at the bottom of the Search, Energy and My list pages.
What Google collects for an ad
The ads come from Google AdMob. To choose, show and measure an ad, and to fight ad fraud, Google's software in IsoLib collects, according to Google:
- the IP address of your phone, which can be used to estimate your general location;
- a device identifier: the advertising identifier of your phone (on iPhone only if you allow tracking, see below) or an identifier that is limited to this app or developer;
- which ads you were shown and how you interacted with them, such as whether a video was watched to the end;
- technical performance and crash information about the ad software.
This data goes to Google, not to us. We see only totals in our AdMob account, such as how many ads were shown; we cannot see who watched them.
You decide first
If you are in the European Economic Area, the United Kingdom or Switzerland, Google's consent message asks for your choice before any ad is requested. You can accept, refuse, or choose per purpose and per partner. Refusing is as easy as accepting. If you refuse, Google may still show non-personalised ads, which use little more than the app and your rough location. Where consent is required, the legal basis is your consent; elsewhere it is our legitimate interest in paying for a free app with advertising.
On iPhone, Apple's own question "Allow IsoLib to track your activity across other companies' apps and websites?" follows. If you choose Ask App Not to Track, Google does not receive your phone's advertising identifier. You can change that at any time in the iPhone Settings, under Privacy & Security, Tracking.
On Android you can reset or delete your advertising ID in the Android settings, under Privacy, Ads (the exact place differs per phone).
Google is responsible for its part
Google acts as an independent controller for the data it collects this way, so its own terms apply alongside ours:
- How Google uses information from sites or apps that use its services
- Google Privacy Policy
- My Ad Center, to manage ad personalisation directly
Google may process this data outside the European Economic Area. Google states that it relies on the European Commission's Standard Contractual Clauses and the EU-US Data Privacy Framework for such transfers.
The App Store and Google Play
You download IsoLib from Apple's App Store or Google Play. What those stores record about your account, your downloads and your payments is between you and Apple or Google, under their own privacy policies. From the stores we receive only anonymous totals, such as the number of downloads per country and crash reports that you allowed your phone to share with developers.
What we do not do
- There is no account. No sign-up, no login, no password, no email address.
- We do not run analytics of our own in IsoLib, and we do not build a profile of you.
- IsoLib sends nothing to a Stroetenga server. We have no copy of anything you do in the app.
- We do not sell or rent data to anyone.
- We do not use your location, camera, microphone, contacts, photos or files.
- We do not send newsletters or marketing email.
- We do not knowingly collect anything from children beyond what this statement describes.
How long we keep things
- Files on your phone: until you delete the app. We have no copy.
- Data Google collects for ads: as long as Google's own policy says; see the Google pages above.
Your rights
Under the GDPR you have the following rights. Because we hold very little that identifies you, some of them will have little to act on, but they are yours all the same.
- Access
- Ask what personal data we hold about you.
- Rectification
- Have inaccurate data corrected.
- Erasure
- Ask us to delete your data.
- Restriction
- Ask us to limit how we use it.
- Objection
- Object to processing based on our legitimate interest.
- Portability
- Receive your data in a machine-readable form.
- Withdraw consent
- Where we rely on your consent, withdraw it at any time, without giving a reason.
Write to privacy@stroetenga.nl to exercise any of these. We answer within one month. For data that Google or Apple hold about you, contact them directly: we cannot reach it on your behalf.
If you are unhappy with how we handle your request, you may lodge a complaint with the Dutch data protection authority, the Autoriteit Persoonsgegevens, or with the supervisory authority in your own country.
Changes to this statement
If what we do changes, this statement changes with it and gets a new "in force from" date at the top. The earlier version stays readable at its own address, listed under "Earlier versions" at the bottom of this page. There is no mailing list to notify, so the date is how you can tell.
Questions about IsoLib
For privacy questions write to privacy@stroetenga.nl. For anything else about the app, info@stroetenga.nl reaches us. Writing to us is ordinary email: we use your address and message only to answer you, and delete them once the conversation is finished.