Guruko Downloads & RevenueGuruko: Libre Glucose Logbook · App Store
Guruko：リブレ血糖値の記録・グラフ
Not in any tracked top chart right now.
Updated 5 Nov 2026 · rankings refresh through the day
Developer株式会社リモシア
CategoryMedical
PriceFree
Released
Rating★ 1.7 (3)
Version2.1.0
Age rating4+
First seen by us
1 Oct 2026
1 Oct 2026Guruko: Libre Glucose Logbook update history & changes
Last change · 8 events since 3 Jul 2026Full timeline ↓✏️Description updated📦Updated to version 2.2.0✏️Description updated📦Updated to version 2.1.0🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 8 events
- ✏️Guruko: Libre Glucose Logbook: description updated· JP
- 📦Guruko: Libre Glucose Logbook updated to version 2.2.0■ 新機能：Siri で記録・血糖値を聞く
もう、そのたびにアプリを開きません。打った瞬間に「ぐるこでインスリン」、食べる瞬間に「ぐるこでメモ」。Siri に話すだけで、注射も食事も時刻どおりに Guruko に記録します。
・「ぐるこでインスリン」：種類と単位を聞き、確かめてから記録します
・「ぐるこで糖質」：量を聞いてから記録します
・「ぐるこでメモ」：何をメモするかを聞き、答えた文をメモに残します
・「ぐるこで血糖値」：いまの血糖値と、上がっているか下がっているかを読み上げます。値が古ければ、その場で取り込み直してから答えます
・ロック中でも記録と読み上げができます。させたくないときは、設定の「Siri」でオフにできます
・Siri AI が使える iPhone（iOS 27.2 以降）では、「ぐるこでメモ、いまからおにぎりを食べるね」のように一言で言い切っても記録できます
・記録は、そのときアプリで選んでいる方に入ります。あとから記録の一覧で直せます
・最初の1回は、Siri が Guruko のショートカットをオンにするかを聞きます。オンにしてください
・使い方は、記録画面の案内と、設定 → ヘルプ → iPhone の「Siri で記録・血糖値を聞く」にあります
■ 修正
・同じ時刻にメモが2件あると、記録一覧から開いて保存したときに、片方のメモが消えることがありました。同じ時刻のメモはまとめて表示し、保存すると1件にまとめるようにしました
■ 2.0 より前のバージョンから更新される方へ
バージョン 2.0 から、記録をご家族ごとに分けて管理します。古いバージョンのアプリが入った端末が残っていると、記録が混ざり、削除されることがあります（削除は iCloud を通じてすべての端末に伝わります）。
・更新は1台ずつ行ってください
・ほかの端末に古いバージョンが入っている場合は、更新前にアンインストールしてください
・アンインストールしてもデータは iCloud に残ります。あとで新しいバージョンを入れれば元に戻ります… more - ✏️Guruko: Libre Glucose Logbook: description updated· JP
- ✏️Guruko: Libre Glucose Logbook: new screenshots10 screenshots (was 10) · JP
- 📦Guruko: Libre Glucose Logbook updated to version 2.1.0NEW: MISSING-DATA ALERTS
When a sensor connection drop leaves a gap in your records, Guruko notifies you while the data can still be recovered. Scan your sensor with the LibreLink app to bring it back. Each alert tells you the time after which the gap can no longer be recovered.
- Alerts show the person's name so you know whose records are affected (glucose values are never shown)
- Turn alerts and their sound on or off in Settings
- iOS decides when alerts are delivered, so they may arrive late
NEW: REVIEW WHILE YOU LOG (IPHONE DUO)
Open iPhone Duo while logging and a review pane appears next to the log screen. See the glucose curve around the time you are logging, your past entries, and memo search results while you enter carbs, insulin, and a memo. Search for "ramen" to list the times you had ramen before, and tap one to see the curve around it. Close the device and only the log screen remains, with everything you entered kept.
- Available on iOS 27.1 or later, free of charge
- The review pane shows only the records of the person you are logging for
IMPROVEMENTS
- On iOS 27.1 or later, the log screen opens full screen
- On a closed iPhone Duo, Save and Cancel no longer disappear when you scroll the log screen
- After you change an entry, tapping outside no longer closes the log screen. When the log screen was opened from the record list, Back now asks before discarding your changes
- Notices that arrive while the log screen is open now appear after you close it, so the screen never switches in the middle of an entry
- When the latest reading is not from today, its time now includes the date
- In the insulin pen list, tapping anywhere on a row now opens it for editing
IF YOU ARE UPDATING FROM A VERSION BEFORE 2.0
Starting with version 2.0, records are kept separately for each family member. If a device still has an older version installed, records can get mixed up and deleted (deletions propagate to every device through iCloud).
- Update one device at a time
- If another device has an older version, uninstall it before updating
- Uninstalling does not remove your data from iCloud; reinstalling the new version restores it… more - 🆕Guruko: Libre Glucose Logbook first spotted by AppInsider#57 in Top Grossing · Medical · Japan
- 📦Guruko: Libre Glucose Logbook version 2.0.1BUG FIXES
- Fixed an issue where the Apple Watch complication and Watch app stopped updating after the Guruko app on iPhone was relaunched. If your watch kept showing "N days ago" as stale, open Guruko on your iPhone once after this update and the latest reading will arrive.
- Fixed an issue where, when logging out, readings fetched while the device clock was ahead could remain on widgets and Apple Watch.
IF YOU ARE UPDATING FROM A VERSION BEFORE 2.0
Starting with version 2.0, records are kept separately for each family member. If a device still has an older version installed, records can get mixed up and deleted (deletions propagate to every device through iCloud).
- Update one device at a time
- If another device has an older version, uninstall it before updating
- Uninstalling does not remove your data from iCloud; reinstalling the new version restores it… more - 🆕Guruko: Libre Glucose Logbook 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
1.7 ★
3 ratings
Measured
Guruko: Libre Glucose Logbook on the App Store
App details
App ID
6780166458
Publisher
REMOSIA, K.K.
On the store since
Jul 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad · Watch
Content rating
4+
Languages
1
EN
Size
16 MB
Also listed in
Health & Fitness
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
1.7 ★
3 ratings
Measured
Ratings
3
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
1.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
56/100
faster than 60% of Medical apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Guruko: Libre Glucose Logbook
[IMPORTANT - PLEASE READ BEFORE UPDATING]
Starting with version 2.0, records are kept separately for each family member.
If a device still has an older version of the app installed, records can get mixed up and deleted. Deletions propagate to every device through iCloud.
- Update one device at a time
- If another device has an older version, uninstall it before updating
- Uninstalling does not remove your data from iCloud; reinstalling the new version restores it
Guruko is a glucose viewer that fetches your Abbott FreeStyle Libre readings as a LibreLinkUp follower and stores them on your device as a long-term history - for looking back on your diabetes management and CGM trends.
WHY STORE?
The official LibreLink app shows only about the last 8 hours, and LibreLinkUp about 12. Guruko fetches periodically and accumulates, so you get weeks and months of history, statistics and AGP. That is what Guruko is for.
FEATURES
- Family separation: when you follow more than one person in LibreLinkUp, records are kept separately per person. Charts, statistics, AGP and exports cover only the person shown. Insulin pens can be assigned to an owner.
- Continuous graph with the latest reading; tap or drag for details at any point
- Time search: jump to any date or keyword in your history; recalculate stats and AGP for any period
- Statistics: Time in Range (TIR), average, GMI (estimated HbA1c), CV, SD, daily heatmap
- AGP: percentile bands folded across days to see your daily patterns
- Insights: weekly highlights and rule-based pattern detection
- Logs: carbs, insulin and notes overlaid on the graph - a digital blood sugar diary
- Review while you log (iPhone Duo): open iPhone Duo and the glucose curve around that time, your past entries, and memo search results appear beside the log screen, so you can compare with a similar past meal while logging (iOS 27.1 or later, free).
- NovoPen import via NFC (unofficial)
- iCloud sync across your devices
- Apple Health export (write-only)
- CSV export
WIDGETS, LOCK SCREEN & APPLE WATCH (GURUKO PRO)
- Home and Lock Screen widgets with the latest value and a mini graph
- Live Activity / Dynamic Island on the Lock Screen
- Apple Watch app and complications
Note: automatic updates are limited by the OS to save battery (no push notifications are used). Open the app to refresh.
PRIVACY
Your glucose data stays on your device (and your iCloud). Guruko has no backend and sends nothing to its own servers.
GURUKO PRO (subscription)
Core features (history, graphs, statistics, AGP, insights, CSV) are free. Pro unlocks:
- Home and Lock Screen widgets
- Apple Watch app and complications
- Apple Health export
- Lock Screen display (Live Activity / Dynamic Island)
- Reports (PDF / CSV)
Price: JPY 200/month or JPY 1,500/year. Payment is charged to your Apple ID account. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple ID > S
Starting with version 2.0, records are kept separately for each family member.
If a device still has an older version of the app installed, records can get mixed up and deleted. Deletions propagate to every device through iCloud.
- Update one device at a time
- If another device has an older version, uninstall it before updating
- Uninstalling does not remove your data from iCloud; reinstalling the new version restores it
Guruko is a glucose viewer that fetches your Abbott FreeStyle Libre readings as a LibreLinkUp follower and stores them on your device as a long-term history - for looking back on your diabetes management and CGM trends.
WHY STORE?
The official LibreLink app shows only about the last 8 hours, and LibreLinkUp about 12. Guruko fetches periodically and accumulates, so you get weeks and months of history, statistics and AGP. That is what Guruko is for.
FEATURES
- Family separation: when you follow more than one person in LibreLinkUp, records are kept separately per person. Charts, statistics, AGP and exports cover only the person shown. Insulin pens can be assigned to an owner.
- Continuous graph with the latest reading; tap or drag for details at any point
- Time search: jump to any date or keyword in your history; recalculate stats and AGP for any period
- Statistics: Time in Range (TIR), average, GMI (estimated HbA1c), CV, SD, daily heatmap
- AGP: percentile bands folded across days to see your daily patterns
- Insights: weekly highlights and rule-based pattern detection
- Logs: carbs, insulin and notes overlaid on the graph - a digital blood sugar diary
- Review while you log (iPhone Duo): open iPhone Duo and the glucose curve around that time, your past entries, and memo search results appear beside the log screen, so you can compare with a similar past meal while logging (iOS 27.1 or later, free).
- NovoPen import via NFC (unofficial)
- iCloud sync across your devices
- Apple Health export (write-only)
- CSV export
WIDGETS, LOCK SCREEN & APPLE WATCH (GURUKO PRO)
- Home and Lock Screen widgets with the latest value and a mini graph
- Live Activity / Dynamic Island on the Lock Screen
- Apple Watch app and complications
Note: automatic updates are limited by the OS to save battery (no push notifications are used). Open the app to refresh.
PRIVACY
Your glucose data stays on your device (and your iCloud). Guruko has no backend and sends nothing to its own servers.
GURUKO PRO (subscription)
Core features (history, graphs, statistics, AGP, insights, CSV) are free. Pro unlocks:
- Home and Lock Screen widgets
- Apple Watch app and complications
- Apple Health export
- Lock Screen display (Live Activity / Dynamic Island)
- Reports (PDF / CSV)
Price: JPY 200/month or JPY 1,500/year. Payment is charged to your Apple ID account. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple ID > S
Latest updates
2.2.0
■ 新機能：Siri で記録・血糖値を聞く
もう、そのたびにアプリを開きません。打った瞬間に「ぐるこでインスリン」、食べる瞬間に「ぐるこでメモ」。Siri に話すだけで、注射も食事も時刻どおりに Guruko に記録します。
・「ぐるこでインスリン」：種類と単位を聞き、確かめてから記録します
・「ぐるこで糖質」：量を聞いてから記録します
・「ぐるこでメモ」：何をメモするかを聞き、答えた文をメモに残します
・「ぐるこで血糖値」：いまの血糖値と、上がっているか下がっているかを読み上げます。値が古ければ、その場で取り込み直してから答えます
・ロック中でも記録と読み上げができます。させたくないときは、設定の「Siri」でオフにできます
・Siri AI が使える iPhone（iOS 27.2 以降）では、「ぐるこでメモ、いまからおにぎりを食べるね」のように一言で言い切っても記録できます
・記録は、そのときアプリで選んでいる方に入ります。あとから記録の一覧で直せます
・最初の1回は、Siri が Guruko のショートカットをオンにするかを聞きます。オンにしてください
・使い方は、記録画面の案内と、設定 → ヘルプ → iPhone の「Siri で記録・血糖値を聞く」にあります
■ 修正
・同じ時刻にメモが2件あると、記録一覧から開いて保存したときに、片方のメモが消えることがありました。同じ時刻のメモはまとめて表示し、保存すると1件にまとめるようにしました
■ 2.0 より前のバージョンから更新される方へ
バージョン 2.0 から、記録をご家族ごとに分けて管理します。古いバージョンのアプリが入った端末が残っていると、記録が混ざり、削除されることがあります（削除は iCloud を通じてすべての端末に伝わります）。
・更新は1台ずつ行ってください
・ほかの端末に古いバージョンが入っている場合は、更新前にアンインストールしてください
・アンインストールしてもデータは iCloud に残ります。あとで新しいバージョンを入れれば元に戻ります
2.1.0
NEW: MISSING-DATA ALERTS
When a sensor connection drop leaves a gap in your records, Guruko notifies you while the data can still be recovered. Scan your sensor with the LibreLink app to bring it back. Each alert tells you the time after which the gap can no longer be recovered.
- Alerts show the person's name so you know whose records are affected (glucose values are never shown)
- Turn alerts and their sound on or off in Settings
- iOS decides when alerts are delivered, so they may arrive late
NEW: REVIEW WHILE YOU LOG (IPHONE DUO)
Open iPhone Duo while logging and a review pane appears next to the log screen. See the glucose curve around the time you are logging, your past entries, and memo search results while you enter carbs, insulin, and a memo. Search for "ramen" to list the times you had ramen before, and tap one to see the curve around it. Close the device and only the log screen remains, with everything you entered kept.
- Available on iOS 27.1 or later, free of charge
- The review pane shows only the records of the person you are logging for
IMPROVEMENTS
- On iOS 27.1 or later, the log screen opens full screen
- On a closed iPhone Duo, Save and Cancel no longer disappear when you scroll the log screen
- After you change an entry, tapping outside no longer closes the log screen. When the log screen was opened from the record list, Back now asks before discarding your changes
- Notices that arrive while the log screen is open now appear after you close it, so the screen never switches in the middle of an entry
- When the latest reading is not from today, its time now includes the date
- In the insulin pen list, tapping anywhere on a row now opens it for editing
IF YOU ARE UPDATING FROM A VERSION BEFORE 2.0
Starting with version 2.0, records are kept separately for each family member. If a device still has an older version installed, records can get mixed up and deleted (deletions propagate to every device through iCloud).
- Update one device at a time
- If another device has an older version, uninstall it before updating
- Uninstalling does not remove your data from iCloud; reinstalling the new version restores it
2.0.1
BUG FIXES
- Fixed an issue where the Apple Watch complication and Watch app stopped updating after the Guruko app on iPhone was relaunched. If your watch kept showing "N days ago" as stale, open Guruko on your iPhone once after this update and the latest reading will arrive.
- Fixed an issue where, when logging out, readings fetched while the device clock was ahead could remain on widgets and Apple Watch.
IF YOU ARE UPDATING FROM A VERSION BEFORE 2.0
Starting with version 2.0, records are kept separately for each family member. If a device still has an older version installed, records can get mixed up and deleted (deletions propagate to every device through iCloud).
- Update one device at a time
- If another device has an older version, uninstall it before updating
- Uninstalling does not remove your data from iCloud; reinstalling the new version restores it
Store changes
What Guruko: Libre Glucose Logbook changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
Description updated
New screenshots
10 screenshots (was 10)
