SmartLog (i vs GKI Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartLog (i
This app helps users manage their blood glucose levels by connecting to compatible meters or allowing manual input. It generates reports, records related health data, and enables data sharing. Users can also sync their information with a cloud server and integrate with Apple Health.
- Connects to CareSens meters via Bluetooth
- Manual blood glucose input
- Blood glucose trend reports
- Records meals, exercise, and insulin
- Share data via email or push
- Syncs data with SmartLog Server
- Integrates with Apple Health
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SmartLog: Smart blood glucose management app for iPhone SmartLog provides the following functions to help you manage your blood glucose. (1) Connection with CareSens blood glucose meters (Bluetooth) (2) Manual Input the blood glucose value (3) Providing various reports that show trend of blood glucose value (4) Recording information such as meal, exercise, insulin and memo (5) Sharing your blood glucose data with others by sending email or push service (6) Sync(or backup) your data with SmartLog Server using "Synchronization" menu in "More" tab Works with Apple Health: If you allow Apple Health access, your blood glucose data will be shared with Apple Health App. If you have any inconveniences or improvement requests in using SmartLog, please contact our Customer Center(smartlog.ios@i-sens.com).
GKI Tracker
Track your glucose and ketone levels to calculate your GKI. Sync data with your health app, review your progress in history, and discover keto-friendly foods with a built-in grocery list manager.
- GKI calculation dashboard
- Health app data sync
- Historical progress tracking
- Keto food discovery
- Keto grocery list management
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- Enter your Glucose and your Ketones to find out your GKI in your dashboard. - Sync your Glucose Level with the Health App - Find all your previous entries in your history and see your improvements. - Discover Keto foods and manage your Keto Grocery list
Screenshots
Verdict
The clearest difference is review sentiment: GKI Tracker at 59% against SmartLog (i's 14%. GKI Tracker also leads on rating (3.6 vs 1.6). SmartLog (i's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 5 months). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GKI Tracker holds the better App Store score, 3.6 against 1.6. That said, the two scores are not equally well evidenced: SmartLog (i has 118 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 14% of SmartLog (i's written reviews are positive against 59% of GKI Tracker's.
SmartLog (i ships an update every 6 weeks, GKI Tracker every 5 months. The most recent releases landed on September 13, 2026 and July 7, 2026 respectively.
| Parameter | SmartLog (i | GKI Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (118 ratings) | 3.6 (14 ratings) — better |
| Positive reviews | 13.6% of reviews | 59.1% of reviews — better |
| Number of ratings | 118 — better | 14 |
| Update frequency | Every 6 weeks — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.2 | 13.1 — better |
| Further details — not scored | ||
| Size | 38 MB | 36 MB |
| Age rating | 4+ | 12+ |
| Developer | i-SENS, Inc. | Matthias Mellouli |
Customer experience
SmartLog (i
GKI Tracker
Bugs and requests
SmartLog (i
Reported bugs
4 issues- App crashes after recent updates
- Readings disappearing or not syncing
- Compatibility issues with newer iOS versions
- Bluetooth connectivity problems
Requested features
5 requests- Add dark mode option
- Allow deletion of individual readings
- Improve font size and readability
- Enhance data export and sharing options
- Integrate with more glucose meter models
GKI Tracker
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SmartLog (i
No in-app purchases
GKI Tracker
No in-app purchases
Questions
Is SmartLog (i free?
Is GKI Tracker free?
Which has better reviews, SmartLog (i or GKI Tracker?
Do SmartLog (i or GKI Tracker have ads?
Which is updated more often, SmartLog (i or GKI Tracker?
Other comparisons
