Privacy Policy
Frontier Briefing · Last updated 17 June 2026
This policy describes what data the Frontier Briefing mobile app and
associated Telegram channels (together, the “Service”) collect, why, and
what we do with it. The Service is operated by Ken Hennessy
(“we”, “us”, “our”) and you can contact us at
hennessyken1@gmail.com.
1. What we collect
- Anonymous device identifier. When you open the app
we generate a per-install identifier through RevenueCat to track
subscription state. It is not linked to your name, email, or phone
number unless you choose to provide them.
- Subscription receipts. When you purchase a paid
subscription, Apple or Google sends a receipt to RevenueCat, which
forwards entitlement information to our server so we know to unlock
paid content for your device.
- Telegram identifiers. If you message our Telegram
bot to request an API key, we store your numeric Telegram user ID and
a generated email placeholder (
tg_<id>@researchapp)
against the issued API key. We do not store your Telegram username,
profile photo, phone number, or any other Telegram data.
- Server logs. Our servers log the date, time, IP
address, and HTTP path of API requests. Logs are retained for up to
30 days and used solely for debugging and abuse prevention.
- App diagnostics. We may receive aggregated, anonymous
crash reports through Expo and the operating system’s built-in crash
reporting. No personal data is collected.
- Advertising data (free tier). The free version of the
app shows ads through Google AdMob. To serve and measure those ads,
Google’s advertising SDK may access your device’s advertising identifier
and limited app-usage and device information, and may use it to show
personalised ads depending on your region and settings. Paid subscribers
see no ads.
Aside from Google AdMob on the free tier (described above), we do
not use separate third-party analytics SDKs or social-media
plugins inside the app. You can reset or limit your advertising identifier in
your device settings (Settings → Google → Ads), and you can remove ads
entirely by subscribing to the paid tier. Google’s use of advertising data is
governed by the Google Privacy
Policy.
2. How we use the data
- To deliver paid content to subscribers.
- To prevent abuse and rate-limit API usage.
- To respond to support requests you send us.
- To comply with legal obligations (e.g. tax records on subscription
revenue collected by Apple or Google on our behalf).
3. Who we share it with
- Apple, Inc. and Google LLC handle
payment processing and subscription billing on our behalf. We never
see your payment card details.
- RevenueCat, Inc. processes subscription receipts
and entitlement state. See their privacy policy at
revenuecat.com/privacy.
- Telegram FZ-LLC if you choose to use our Telegram
channels — your interaction with Telegram is governed by Telegram’s
own privacy policy.
- Service providers who host our infrastructure
(currently Contabo for servers, Cloudsmith and Let’s Encrypt for
software distribution and TLS).
- Google AdMob (free tier only) receives your device’s
advertising identifier and ad-interaction data to serve and measure ads.
See how
Google uses this data.
We do not sell, rent, or trade your data. Apart from the advertising
identifier shared with Google AdMob on the free tier (described above), we
do not share data with advertising networks. Research paper summaries are
generated by a
third-party language-model API; only the public abstract of each
research paper is sent to that API, never any user data.
4. Where data is stored
Our servers are located in Germany. Subscription data held by Apple,
Google, and RevenueCat may be stored in the United States and other
jurisdictions where those companies operate. By using the Service you
consent to the transfer of this limited data outside your home
country.
5. Retention
- Subscription records are kept while the subscription is active and
for up to seven years afterwards to meet tax-law requirements.
- API keys are kept while active and deleted within 12 months of
cancellation.
- Server logs are deleted after 30 days.
- Research paper data is automatically purged from our database three
days after publication.
6. Your rights
If you are in the EU, UK, or California you have the right to access,
correct, or delete the personal data we hold about you, and to object to
certain processing. To exercise these rights, email
hennessyken1@gmail.com with
a description of your request and the device or Telegram ID you would
like the request applied to. We respond within 30 days.
You can cancel your subscription at any time from your device’s App
Store or Google Play settings. Cancelling stops auto-renewal but does
not delete data we are required to retain by law.
7. Children
The Service is not directed at children under 13 (or under 16 in the
EU). We do not knowingly collect personal data from children. If you
believe a child has provided us with personal data, please contact us
and we will delete it.
8. Security
API traffic is encrypted in transit via TLS 1.2+. Subscription data
is held by RevenueCat and Apple/Google in their own secure systems.
We do not store passwords or payment details on our own servers.
9. Changes
We may update this policy from time to time. Material changes will
be announced in the app and on this page. The “Last updated” date at
the top reflects the most recent revision.
10. Contact
Questions, complaints, or data-rights requests:
hennessyken1@gmail.com.