Nature Observation Journal
One photo a day turns into a science project your kid is truly proud of.
Download on the App Store
Screenshots










Features
One photo a day
A guided three-step flow kids can do on their own: snap a photo, write one line, done. Keeping a daily observation journal has never been this easy.
Weather logged automatically
Every entry is stamped with the day's weather and temperature — no more guessing what the weather was on day three.
From diary to report in one tap
Choose a template and the whole journal lays itself out as a printable report — a classic poster-style sheet perfect for the tri-fold board, or a page-a-day notebook — ready to export as a PDF.
Widgets and streaks
A home-screen widget shows today's "observed / not yet" status and your streak, with a gentle daily reminder at whatever time works for your family.
Growth charts
Add optional measurements like height or count, and watch them build into a growth chart over the observation period.
Pay once, keep it forever
The free version covers one theme. A single one-time purchase unlocks unlimited themes, every template, and watermark-free PDFs. No subscription, ever.
The hardest part of a science observation project isn't the observing — it's keeping it up every single day, and then turning a big pile of photos into something your child can actually hand in.
KansatsuLog fixes both. Each day your child snaps one photo and writes one line, and the app stamps it with the day's weather and temperature automatically. When the project is done, choose a template and the whole journal lays itself out as a beautiful report — a classic poster-style sheet or a page-a-day notebook — ready to print or submit as a PDF.
ONE PHOTO A DAY
- A guided three-step flow kids can do on their own: photo, one-line note, done
- Weather and temperature are recorded automatically — no more guessing what the weather was on day three
- Optional measurements (height, count, or anything you like) build a growth chart over time
MADE FOR REAL PROJECTS
- Ready-made observation themes to start right away: morning glory, cherry tomatoes, insects, the Moon, clouds, ice experiments — or create your own
- Perfect for the science fair, a summer project, or a classroom assignment in any season
- A home-screen widget shows today's "observed / not yet" status and your streak, so no day gets missed
- A gentle daily reminder at whatever time works for your family
FROM DIARY TO REPORT IN ONE TAP
- Poster-style layout: the full observation period on one big printable sheet, perfect for the tri-fold board
- Notebook-style layout: one page per day, like a real field notebook
- Add a title, a name and a closing summary, then export as a full-color PDF
- A summary assistant drafts the closing paragraph from your child's own entries, so getting started is easier
WHY PARENTS LOVE IT
- Kids do it themselves — no need to sit beside them for every step
- The streak gently builds a habit of sticking with things day after day
- Run several observations at once: one per child, or plants and insects side by side
- Great for science homework, March break projects, or simply a fun family routine
PRIVATE BY DESIGN
Everything stays on your device. No account, no ads, no data collection — kids can use it freely and parents can relax.
The free version covers one theme with a small watermark; a single one-time purchase unlocks unlimited themes, every template, and watermark-free PDFs. No subscription, ever. Pay once and keep it on all your devices.
Start today with a single photo — and watch small daily changes grow into a project your child is truly proud of.