# SonoSim vs Tel

The clearest difference is rating: Tel at 5.0 against SonoSim's 4.5. Tel also leads on ads (none vs shown) and monetization model (free vs ad-supported). SonoSim's advantage is ratings volume (8 vs 2) and device support (3 vs 1). On price, update cadence 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.

Tel holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

SonoSim ships an update every 2 months, Tel every 5 weeks. The most recent releases landed on September 7, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | SonoSim | Tel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (8 ratings)](https://appshunter.io/ios/app/sonosim/id1462648333/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tel-ederm/id1503807211/reviews)** |
| Number of ratings | **8** | 2 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 22 MB | 171 MB |
| Requires iOS | **9.0** | 17.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 12+ | 12+ |
| Developer | [SonoSim, Inc.](https://appshunter.io/developer/1462648332) | [eDerm Systems LLC](https://appshunter.io/developer/603097905) |

## What reviewers say

### SonoSim

[App page](https://appshunter.io/ios/app/sonosim/id1462648333)

This app provides members with quick access to ultrasound education, imaging protocols, and reference guides, usable both online and offline. It features a library of courses, concise summaries of key concepts, and helpful tips for bedside use.

**Highlights:** Access to 80+ peer-reviewed courses, Concise key concept summaries, Bedside reference guides, Offline access to content, Case-based ultrasound education

**In-app purchases:** none


### Tel

[App page](https://appshunter.io/ios/app/tel-ederm/id1503807211)

This iPad application complements a web-based EHR and practice management system for dermatology. It offers intuitive use, offline capabilities, and built-in billing expertise for dermatologists.

**Highlights:** Native iPad compliment to web application, Intuitive and easy to use, No setup required, Complete dermatology knowledge base, Smart learning and customizable, Offline work capability, Auto coder for billing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SonoSim free?

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

### Is Tel free?

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

### Which has better reviews, SonoSim or Tel?

Tel is rated higher. SonoSim averages 4.5 out of 5 from 8 ratings, while Tel averages 5.0 from 2 ratings.

### Do SonoSim or Tel have ads?

SonoSim shows ads; Tel does not.

### Which is updated more often, SonoSim or Tel?

SonoSim ships an update every 2 months, and Tel every 5 weeks. Most recently, SonoSim was updated on September 7, 2026 and Tel on June 4, 2026.

---

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