Observing Notebook Downloads & RevenueObserving Notebook: Astronomy · App Store
Observing Notebook
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperGFC Studio
CategoryReference
Price6.99 EUR
Released
Rating★ 0.0 (0)
Version1.0.2
Age rating4+
First seen by us
9 Oct 2026
9 Oct 2026Observing Notebook: Astronomy update history & changes
Last change · 12 events since 3 Jun 2026Full timeline ↓📦Updated to version 1.0.2📈Dropped out of every chart we track✏️Description updated✏️New iPad screenshots📦Updated to version 1.0.1🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 12 events
- ✏️Observing Notebook: Astronomy: app got smaller3 MB → 3 MB (-18%)
- 📦Observing Notebook: Astronomy updated to version 1.0.2A fresh new app icon, plus small under-the-hood improvements.
- ✏️Observing Notebook: Astronomy added 4 languages+ DE + ES + FR + JA
- 📈Observing Notebook: Astronomy dropped out of every chart we trackLast seen 11 Oct
- ✏️Observing Notebook: Astronomy: description updated· DE
- ✏️Observing Notebook: Astronomy: new iPad screenshots· DE
- ✏️Observing Notebook: Astronomy: new screenshots5 screenshots (was 5) · DE
- 📦Observing Notebook: Astronomy updated to version 1.0.1Jetzt auch auf Deutsch, Spanisch, Französisch und Japanisch.
- 📦Observing Notebook: Astronomy: first update in 130 days
- 🆕Observing Notebook: Astronomy first spotted by AppInsider#11 in Top Paid · Reference · Germany
- 📦Observing Notebook: Astronomy version 1.0.0No release notes
- 🆕Observing Notebook: Astronomy released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Observing Notebook: Astronomy on the App Store
App details
App ID
6775144000
Publisher
Gorik Francois Consulting
On the store since
Jun 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
5
EN FR DE JA ES
Size
3 MB
Also listed in
Education
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Observing Notebook: Astronomy
Your observing records belong to you — not a server, not a subscription, not a sign-up form.
Observing Notebook is an offline iPhone logbook for amateur astronomers who keep sessions in Excel or on paper and have had enough of planetarium apps that bury the logbook behind a $49/year wall. One purchase. No account. No cloud. All data stays on your device.
PLAN TONIGHT'S SESSION
See which deep-sky objects are actually visible from your location tonight. The built-in planner computes rise, set, transit, and maximum altitude for every Messier, Caldwell, and curated NGC/IC object in the offline catalog — without a network connection. Filter by observing list, object type, constellation, or observed/unobserved state. Select your targets and start a planned session in one tap.
LOG FAST IN THE FIELD
Quick-log mode captures what matters immediately: target, rating, short note, and time. Fill in the rest later. Eyepiece, filter used, seeing, transparency, Bortle class, sketch note — the full observation form is there when you want it, out of your way when you don't. Defaults carry over from your last session so repeated entry stays minimal.
BROWSE THE OFFLINE CATALOG
Messier 110 objects, Caldwell 109 objects, a curated selection of bright NGC/IC showpieces, and solar-system reference entries for Mercury through Neptune and the Moon — all bundled, all available with airplane mode on. Each object detail shows rise/set/transit for tonight, your full observation history, and actions to log, plan, or add to a list.
TRACK YOUR OBSERVING PROGRAMS
Built-in Messier and Caldwell checklists show real progress derived from your logged observations, not a manual tally. Create custom lists for your club program or personal projects. Filter by visible tonight, unobserved, type, or constellation. Progress like 47/110 updates every time you log.
NIGHT MODE & EXPORT
True-black background with deep-red controls protects your dark adaptation in the field. Export your full log to CSV or JSON and share through the iOS share sheet — to Files, AirDrop, email, or any cloud drive you choose. Your data, your format.
PRIVACY BY DESIGN
No account. No login. No tracking. No analytics. No ads. App Store privacy label: Data Not Collected. One-time purchase — nothing unlocks later, nothing expires.
Observing Notebook is not a planetarium. It does not show a star map, track objects in real time, or control mounts. It is the serious field notebook that serious observers actually need.
Observing Notebook is an offline iPhone logbook for amateur astronomers who keep sessions in Excel or on paper and have had enough of planetarium apps that bury the logbook behind a $49/year wall. One purchase. No account. No cloud. All data stays on your device.
PLAN TONIGHT'S SESSION
See which deep-sky objects are actually visible from your location tonight. The built-in planner computes rise, set, transit, and maximum altitude for every Messier, Caldwell, and curated NGC/IC object in the offline catalog — without a network connection. Filter by observing list, object type, constellation, or observed/unobserved state. Select your targets and start a planned session in one tap.
LOG FAST IN THE FIELD
Quick-log mode captures what matters immediately: target, rating, short note, and time. Fill in the rest later. Eyepiece, filter used, seeing, transparency, Bortle class, sketch note — the full observation form is there when you want it, out of your way when you don't. Defaults carry over from your last session so repeated entry stays minimal.
BROWSE THE OFFLINE CATALOG
Messier 110 objects, Caldwell 109 objects, a curated selection of bright NGC/IC showpieces, and solar-system reference entries for Mercury through Neptune and the Moon — all bundled, all available with airplane mode on. Each object detail shows rise/set/transit for tonight, your full observation history, and actions to log, plan, or add to a list.
TRACK YOUR OBSERVING PROGRAMS
Built-in Messier and Caldwell checklists show real progress derived from your logged observations, not a manual tally. Create custom lists for your club program or personal projects. Filter by visible tonight, unobserved, type, or constellation. Progress like 47/110 updates every time you log.
NIGHT MODE & EXPORT
True-black background with deep-red controls protects your dark adaptation in the field. Export your full log to CSV or JSON and share through the iOS share sheet — to Files, AirDrop, email, or any cloud drive you choose. Your data, your format.
PRIVACY BY DESIGN
No account. No login. No tracking. No analytics. No ads. App Store privacy label: Data Not Collected. One-time purchase — nothing unlocks later, nothing expires.
Observing Notebook is not a planetarium. It does not show a star map, track objects in real time, or control mounts. It is the serious field notebook that serious observers actually need.
Latest updates
1.0.2
A fresh new app icon, plus small under-the-hood improvements.
1.0.1
Jetzt auch auf Deutsch, Spanisch, Französisch und Japanisch.
1.0.0
Store changes
What Observing Notebook: Astronomy changed on its store page: name, icon, screenshots, price, size, languages, requirements.
App got smaller
3 MB → 3 MB (-18%)
Added 4 languages
+ DE + ES + FR + JA
Description updated
