# Stelo by Dexcom vs Source Performance

The clearest difference is review sentiment: Source Performance at 100% against Stelo by Dexcom's 18%. Source Performance also leads on rating (5.0 vs 2.5) and device support (4 vs 2). Stelo by Dexcom's advantage is ratings volume (567 vs 9) and chart position (#123 vs unranked). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Source Performance holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Stelo by Dexcom has 567 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 18% of Stelo by Dexcom's written reviews are positive against 100% of Source Performance's.

Stelo by Dexcom ships an update every 6 weeks, Source Performance every 2 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Stelo by Dexcom | Source Performance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (567 ratings)](https://appshunter.io/ios/app/stelo-by-dexcom/id6475610406/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/source-performance/id6590602459/reviews)** |
| Number of ratings | **567** | 9 |
| Positive reviews | 18.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Best chart rank | **#123** | — |
| Size | 311 MB | 180 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [DexCom, Inc.](https://appshunter.io/developer/457035738) | [Source Performance LLC](https://appshunter.io/developer/1760047672) |

## What reviewers say

### Stelo by Dexcom

[App page](https://appshunter.io/ios/app/stelo-by-dexcom/id6475610406)

**Currently charting:** #123 Top Free · Health & Fitness (US App Store)

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.

**Highlights:** 24/7 glucose tracking, No fingersticks required, Personalized health insights, Diet and exercise personalization, Form healthy habits, No prescription needed

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy sensor setup
- 👍 Intuitive app interface
- 🔍 Helpful for understanding glucose trends
- 💡 Integrates with Apple Health

**What reviewers complain about**

- 🐛 Sensor accuracy issues
- 🔍 Limited data history and analysis
- 🤖 Lack of human customer support
- 🔍 Inability to calibrate sensor
- 🔍 Inconsistent Apple Watch integration

**Reported bugs**

- Sensor session ending prematurely
- Inconsistent data syncing with Apple Health
- App freezing and crashing issues

**Requested features**

- 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


### Source Performance

[App page](https://appshunter.io/ios/app/source-performance/id6590602459)

This app provides personalized workout programs and tracks your fitness journey. Monitor workouts, nutrition, habits, and measurements with coach support. Achieve your health goals with guided exercises and progress tracking.

**Highlights:** Access and track training plans, Follow exercise and workout videos, Track meals and food choices, Monitor daily habits, Set and track health goals, Message your coach in real-time, Track body measurements and progress photos

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Stelo by Dexcom free?

Stelo by Dexcom is free to download, with no in-app purchases.

### Is Source Performance free?

Source Performance is free to download, with no in-app purchases.

### Which has better reviews, Stelo by Dexcom or Source Performance?

Source Performance is rated higher. Stelo by Dexcom averages 2.5 out of 5 from 567 ratings, while Source Performance averages 5.0 from 9 ratings.

### Do Stelo by Dexcom or Source Performance have ads?

Neither Stelo by Dexcom nor Source Performance shows ads.

### Which is updated more often, Stelo by Dexcom or Source Performance?

Stelo by Dexcom ships an update every 6 weeks, and Source Performance every 2 months. Most recently, Stelo by Dexcom was updated on October 6, 2026 and Source Performance on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*