Keto Logger vs Stelo by Dexcom
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keto Logger
Easily log and visualize your ketone and glucose readings. Supports multiple units, CSV import from popular meters, and data export. Track your progress with interactive graphs and history views.
- Log ketone and glucose readings
- Support for mg/dL and mmol/L units
- CSV import from KetoMojo
- Line graph visualization
- History view with GKI calculation
- CSV data export
- Database backup and restore
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KetoLogger will help you quickly and easily log and graph your ketone and glucose readings. Enter your glucose and ketone readings with ease via the simple to use entry screens. Both mg/dL and mmol/L glucose units are supported. You can import the CSV files from the KetoMojo meter app*. The graph tab helps you visualize your glucose vs. ketone readings with a line graph. Quickly see how you're doing with a glance. Jump quickly between date ranges to get the best picture of your progress. The history view lets you see your readings. Either glucose, ketones or using a "Both" view. In the Both view matching glucose/ketones readings are paired and the GKI is calculated. Easily export all your readings in CSV format (Two formats to chose from). A "backup manager" maintains the last few versions of the database. These can be restored or exported. Share your database between devices. If there's a feature that's missing please let us know at: missing-feature@ketologger.com GKI graphing is in the works (not sure when it will be done) but was originally skipped because I figured that graphing ketones vs glucose creates a kind of visual GKI. See my thought on GKI here: https://ketologger.com/blog/2018-08-16-ketologger-what-is-the-gki-and-why-is-it-green Keto Logger was inspired when a family member was following a ketogenic diet for health reasons. For a programmer logging and graphing ketones in a spreadsheet is not too challenging. For most other people probably a huge challenge. Keto Logger was created so that anyone with an iOS device can log and graph their ketone and glucose readings. (Also I personally have been following a low carb/ ketogenic diet since about 2003.) (* CVS import is tricky and will break if the exported format changes. If import fails then please send a mail to support@ketologger.com so we can figure out what's wrong and fix it.)
Stelo by Dexcom
Easily track your glucose levels 24/7 without fingersticks or a prescription. Gain personalized insights to understand how diet and exercise impact your health. This app empowers you to build healthier habits and take control of your well-being.
- 24/7 glucose tracking
- No fingersticks required
- Personalized health insights
- Diet and exercise personalization
- Form healthy habits
- No prescription needed
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Welcome to the revolution in personalized glucose health. The Stelo by Dexcom Glucose Biosensor finally gives you an easy way to track your glucose and form healthy habits. No fingerpicks. No prescription. Just results. Stelo sets the standard in glucose innovation – delivering 24/7 access to personal glucose insights, empowering you to uncover what works for you. Our smartphone* app, gives you the power to personalize your diet and exercise choices, so healthy habits can become second nature.¹ With Stelo, you can revolutionize the way you track your glucose – giving you everything you need to become a healthier you. Stelo Glucose Biosensor required for Stelo by Dexcom app use – sold separately at www.Stelo.com Stelo is indicated for adults 18+ who don’t use insulin. STELO IMPORTANT INFORMATION: Consult your healthcare provide before making any medication adjustments based on your sensor readings. Do not use if you have problematic hypoglycemia. Failure to use Stelo and its components according to the instructions for use provided and to properly consider all indications, contraindications, warnings, precautions, and cautions in those instructions for use may result in your missing a severe hypoglycemia (low blood glucose) or hyperglycemia (high blood glucose) occurrence. If your sensor readings are not consistent with your symptoms, a blood glucose meter may be an option as needed and consult your healthcare provider. Seek medical advice and attention when appropriate, including before making any medication adjustments an/or for any medical emergency. *For Stelo app compatibility information, visit stelo.com/compatibility. ¹ Stelo User Guide: MT-1000421
Screenshots
Verdict
The clearest difference is review sentiment: Keto Logger at 91% against Stelo by Dexcom's 18%. Keto Logger also leads on rating (4.8 vs 2.5) and iOS requirement (9.3 vs 18.6). Stelo by Dexcom's advantage is price (Free vs $2.99) and chart position (#103 vs unranked). On ratings volume, update cadence, ads and in-app purchases 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
Stelo by Dexcom is free to download; Keto Logger costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Keto Logger holds the better App Store score, 4.8 against 2.5. Both are backed by a comparable volume of ratings — 298 and 678 respectively. Written reviews point the same way: 91% of Keto Logger's written reviews are positive against 18% of Stelo by Dexcom's.
Keto Logger ships an update every 2 months, Stelo by Dexcom every 5 weeks. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.
| Parameter | Keto Logger | Stelo by Dexcom |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.8 (298 ratings) — better | 2.5 (678 ratings) |
| Positive reviews | 91.2% of reviews — better | 18.0% of reviews |
| Number of ratings | 298 | 678 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #103 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 9.3 — better | 18.6 |
| Further details — not scored | ||
| Size | 20 MB | 311 MB |
| Age rating | 12+ | 17+ |
| Developer | Uncomplicated Solutions Inc. | DexCom, Inc. |
Customer experience
Keto Logger
Stelo by Dexcom
User reviews
Keto Logger
From 298 App Store ratingsWhat we love
- 👍 Simple and easy to use
- 📈 Tracks glucose and ketones
- 📊 Automatic graphs (Day/Week/Month)
- 📤 Data export functionality
- 💡 Calculates Glucose-Ketone Index (GKI)
Room to improve
- ❌ Cannot edit entries
- 🔄 No cloud sync / device sync
- 🍎 No Apple Health integration
- 🧹 Messy and clunky UI (mentioned by one user)
- 🚫 No swipe left delete
Stelo by Dexcom
From 678 App Store ratingsWhat we love
- 🚀 Easy sensor setup
- 👍 Intuitive app interface
- 🔍 Helpful for understanding glucose trends
- 💡 Integrates with Apple Health
Room to improve
- 🐛 Sensor accuracy issues
- 🔍 Limited data history and analysis
- 🤖 Lack of human customer support
- 🔍 Inability to calibrate sensor
- 🔍 Inconsistent Apple Watch integration
Bugs and requests
Keto Logger
Reported bugs
4 issues- Cannot edit entries once saved
- Data corruption (resolved by developer)
- Import issues (resolved by developer)
- Does not sync across devices
Requested features
10 requests- Ability to add notes to readings (e.g., after fast, after meal)
- Track weight
- Sync with Apple Health
- Sync with KetoMojo app
- Add readings for hematocrit and hemoglobin
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- Allow custom tags for results
- Comparative analysis or normative charts
- Option to enter food intake (meals & snacks)
- GKI plot showing benefit zones
- Dark mode option
Stelo by Dexcom
Reported bugs
3 issues- Sensor session ending prematurely
- Inconsistent data syncing with Apple Health
- App freezing and crashing issues
Requested features
5 requests- Ability to view and export historical glucose data
- Option to customize glucose target ranges
- Integration with more fitness/nutrition apps
- Improved Apple Watch support with complications
- Enhanced meal and activity tracking features
In-app purchases
Keto Logger
No in-app purchases
Stelo by Dexcom
No in-app purchases








