Comparison

Uchinoko Diary vs Koura Diary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Uchinoko Diary

Features
Read full description

Little moments with your pet deserve to be remembered. Uchinoko Diary helps you capture everyday life with a photo and a note of up to 60 characters. From sleepy afternoons to a favorite toy, keep the moments you’ll want to revisit. • A simple daily diary Save a photo, add a short note, and use stamps to capture moods and highlights. You can edit saved entries later. • Your days at a glance Browse photos and stamps in the monthly calendar, or find past memories in the diary list. • A month of memories on one album page Choose a favorite photo entry from each week to create a monthly album. Personalize it with backgrounds, frames, and title decorations you’ve unlocked. • Sit back and revisit photo memories Replay photo entries from a selected month in random order. Pause whenever you like or move between entries. • A profile full of personality Keep your pet’s photo, name, birthday, age, personality, and special talent together. Adjust the position and zoom of the profile photo. • More to collect as you keep writing Unlock rewards through diary milestones, seasons, and your pet’s birthday. Watch an egg crack open to reveal album decorations, app icons, and diary backgrounds. • Your pet on your Home Screen An iPhone widget shows the profile photo, today’s diary status, and your writing streak. Tap it to open today’s entry. For dogs, cats, rabbits, hamsters, guinea pigs, parakeets, finches, goldfish, rice fish, turtles, and other beloved pets. Make room for their everyday moments, at your own pace. The app displays ads. An in-app purchase is available to remove them.

About

Koura Diary

Log your turtle's daily care, including weight, temperature, and meals. Track growth with charts and a calendar, and store shell photos. Get care reminders and manage multiple pets.

Highlights
  • Daily care logging
  • Growth charts and calendar
  • Shell photo timeline
  • Care reminders
  • Multiple turtle management
  • Offline viewing
  • Data export
Features
Read full description

Koura Diary — gently record your turtle's every day, whether tortoise or aquatic. Easily enter weight, shell length, temperature, humidity, meals, and droppings by date. Entries flow automatically into charts and a calendar, so you can review growth and changes in condition at a glance. No ads. You can also log several turtles together. ▼ What you can do with Koura Diary • Easy entry — jot down each day's care on a single daily card • See growth — cute charts of weight & shell-length trends and meal distribution • Look back by calendar — check bowel-movement status at a glance • Shell photo timeline — collect shell photos and compare changes over the years • Share memories — turn photos into Polaroid-style cards for social media • Everyone's Turtles — share one photo a day on Today's Turtle and see other owners' turtles; picked photos stay on the Turtle Board • Condition guidance — hints on body build and dietary balance • Care reminders — notifications so you never forget • Multiple turtles — manage logs, photos, and favorite foods per individual • Backup — export your records and keep them on hand • Viewable offline • Japanese / English / Chinese (Simplified & Traditional) / Korean Keep your turtle's little daily changes, together with its lovely shell. Note: This app is a care-logging aid. Nutrition and health indicators are general guidance only and are not a substitute for diagnosis or advice from a veterinarian. If you notice any concerning symptoms, please consult an animal hospital.

Screenshots

Uchinoko Diary4 screens
Koura Diary4 screens

Verdict

The call

The clearest difference is ads: Koura Diary at none against Uchinoko Diary's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Uchinoko Diary sells 1 one-off in-app purchase and Koura Diary sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 9 level
Uchinoko Diary versus Koura Diary: the parameters behind the verdict, then further details
ParameterUchinoko DiaryKoura Diary
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 4 daysEvery 4 days
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size229 MB104 MB
Age rating4+4+
DeveloperOta SatoFuto Togawa

In-app purchases

1 purchases

Uchinoko Diary

One-time1
  • 広告を非表示にする$2.99
3 purchases

Koura Diary

One-time3
  • Support Coffee (Small)$0.99
  • Support Coffee (Medium)$1.99
  • Support Coffee (Large)$3.99

Questions

Is Uchinoko Diary free?
Uchinoko Diary is free to download, with in-app purchases available.
Is Koura Diary free?
Koura Diary is free to download, with in-app purchases available.
Do Uchinoko Diary or Koura Diary have ads?
Uchinoko Diary shows ads; Koura Diary does not.
Which is updated more often, Uchinoko Diary or Koura Diary?
Uchinoko Diary ships an update every 4 days, and Koura Diary every 4 days. Most recently, Uchinoko Diary was updated on October 31, 2026 and Koura Diary on November 5, 2026.

Other comparisons