# IMSS Digital vs STF Kronos

IMSS Digital and STF Kronos both sit at 4.7 stars, but that hides the real split: 100% of STF Kronos's written reviews are positive against 40% of IMSS Digital's. IMSS Digital's advantage is ratings volume (10K vs 9) and update cadence (every 3 weeks vs every 2 months). On price, rating, 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.

On the App Store both sit at effectively the same score — 4.7 for IMSS Digital against 4.7 for STF Kronos. That said, the two scores are not equally well evidenced: IMSS Digital has 10K ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 40% of IMSS Digital's written reviews are positive against 100% of STF Kronos's.

IMSS Digital ships an update every 3 weeks, STF Kronos every 2 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | IMSS Digital | STF Kronos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (10K ratings)](https://appshunter.io/ios/app/imss-digital/id975273006/reviews) | [4.7 (9 ratings)](https://appshunter.io/ios/app/stf-kronos/id1476804951/reviews) |
| Number of ratings | **10K** | 9 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 450 MB | 228 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Instituto Mexicano del Seguro Social](https://appshunter.io/developer/975273005) | [STUFFACTORY](https://appshunter.io/developer/1476804950) |

## What reviewers say

### IMSS Digital

[App page](https://appshunter.io/ios/app/imss-digital/id975273006)

Access essential public health services and information. Find nearby medical facilities, manage your social security number, schedule appointments, and check your eligibility. This app provides a convenient way to connect with public health resources.

**Highlights:** Locate medical facilities, Manage NSS (Social Security Number), Schedule medical appointments, Check eligibility for services, Access health information

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent healthcare staff
- 🚀 Fast and efficient service
- 💡 Helpful tool to find insurance number

**What reviewers complain about**

- 🐛 App crashes or freezes
- 🐛 Inconsistent CURP format validation
- 🐛 Unavailable or delayed medical appointments
- 🐛 Incorrect patient information displayed

**Reported bugs**

- App crashes when trying to update address
- Unable to view number of weeks contributed
- Calendar shows no available appointment dates

**Requested features**

- Add option to cancel appointments
- Improve calendar functionality for booking appointments
- Provide clinic location lookup based on zip code


### STF Kronos

[App page](https://appshunter.io/ios/app/stf-kronos/id1476804951)

This app syncs with your smartwatch to monitor your fitness performance across various sports. Track heart rate, steps, and sedentary periods to analyze your health metrics. It offers additional features based on your specific smartwatch model.

**Highlights:** Smartwatch synchronization, Sports performance monitoring, Heart rate tracking, Step counting, Sedentary period analysis, iOS Health App integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is IMSS Digital free?

IMSS Digital is free to download, with no in-app purchases.

### Is STF Kronos free?

STF Kronos is free to download, with no in-app purchases.

### Which has better reviews, IMSS Digital or STF Kronos?

IMSS Digital and STF Kronos are both rated 4.7 out of 5 on the App Store, from 10K and 9 ratings respectively.

### Do IMSS Digital or STF Kronos have ads?

Neither IMSS Digital nor STF Kronos shows ads.

### Which is updated more often, IMSS Digital or STF Kronos?

IMSS Digital ships an update every 3 weeks, and STF Kronos every 2 months. Most recently, IMSS Digital was updated on October 12, 2026 and STF Kronos on October 7, 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.*