# Coltrain vs BlkBag Rounds

The clearest difference is rating: Coltrain at 5.0 against BlkBag Rounds's 2.1. Coltrain also leads on iOS requirement (15.6 vs 18.0). BlkBag Rounds's advantage is update cadence (fortnightly vs monthly). On price, ratings volume, 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.

Coltrain holds the better App Store score, 5.0 against 2.1. Both are backed by a comparable volume of ratings — 17 and 7 respectively.

Coltrain ships an update monthly, BlkBag Rounds fortnightly. The most recent releases landed on August 16, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Coltrain | BlkBag Rounds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/coltrain/id1491315335/reviews)** | [2.1 (7 ratings)](https://appshunter.io/ios/app/blkbag-rounds/id1631421342/reviews) |
| Number of ratings | **17** | 7 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | Free |
| Size | 302 MB | 14 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Cognition Med, LLC](https://appshunter.io/developer/1491315334) | [BlkBag Inc.](https://appshunter.io/developer/313917731) |

## What reviewers say

### Coltrain

[App page](https://appshunter.io/ios/app/coltrain/id1491315335)

A secure, cloud-based messaging platform for healthcare professionals to enhance patient care and collaboration. It allows for case-based discussions and the secure sharing of photos, videos, and documents.

**Highlights:** HIPAA-compliant messaging, Secure cloud-based platform, Case-based discussions, Photo and document sharing, Peer-to-peer communication, Mobile device compatibility

**Features:** Vision Pro support

**In-app purchases:** none


### BlkBag Rounds

[App page](https://appshunter.io/ios/app/blkbag-rounds/id1631421342)

Streamline medical billing by capturing patient charges and work in real-time. This cloud-based tool allows healthcare professionals and their staff to record encounters instantly, ensuring secure and efficient data synchronization for faster reimbursement.

**Highlights:** Cloud Sync for HIPAA compliant data, Nephrology Module for dialysis encounters, CPT® and ICD-10 integration, Free billing and staff accounts, Collaboration for healthcare groups, Media and Facesheet capture, Schedule follow-ups

**In-app purchases:** none


## Frequently asked questions

### Is Coltrain free?

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

### Is BlkBag Rounds free?

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

### Which has better reviews, Coltrain or BlkBag Rounds?

Coltrain is rated higher. Coltrain averages 5.0 out of 5 from 17 ratings, while BlkBag Rounds averages 2.1 from 7 ratings.

### Do Coltrain or BlkBag Rounds have ads?

Neither Coltrain nor BlkBag Rounds shows ads.

### Which is updated more often, Coltrain or BlkBag Rounds?

Coltrain ships an update monthly, and BlkBag Rounds fortnightly. Most recently, Coltrain was updated on August 16, 2026 and BlkBag Rounds on June 1, 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.*