Autogenic Drainage vs COSA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Autogenic Drainage
This app guides users through autogenic drainage, a breathing technique to clear lung mucus. It features a customizable timer with voice commands and allows symptom tracking. Designed as an aid for individuals with lung conditions, it offers both default and personalized breathing sessions.
- Customizable breathing timer
- Voice commands for breathing cues
- Default and personalized sessions
- Breath phase customization
- Symptom tracking
- Reference section
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The Autogenic Drainage app provides a customizable timer with voice commands to aid in doing autogenic drainage. Autogenic drainage is a breathing exercise that is used to clear mucus from the lungs in people with lung disease. Autogenic drainage requires no equipment and is done entirely through controlling your breathing. This app contains a default autogenic drainage session that was customized by a person with cystic fibrosis and also contains a fully customizable session if the defaults do not work for you. You can customize the length of every inhale, exhale, time holding your breath, and total number of breaths in each phase of autogenic drainage. Hit start and voice commands tell you when to breathe in, hold, and breathe out. The timer also displays how long your session is, the current breath number, and how many breaths you have remaining. The app also contains a reference section. Track symptoms after each session or whenever you need to and recall them later for health professional consults and your own health planning. This app was designed to the specifications of a single person with cystic fibrosis and was developed as an aid in doing autogenic drainage for people with cystic fibrosis or perhaps other lung diseases. This app was not developed by doctors, respiratory therapists, or any other medical professional. This app is not intended to replace any existing medical treatment and should be only used as an aid to people already doing autogenic drainage or those eager to try it.
COSA
Access essential drug information and advanced patient resources. This app provides a portion of licensed drug data from a leading healthcare information provider, based on industry-standard databases.
- Essential drug information
- Advanced patient resources
- Licensed drug data
- Industry-standard databases
- Physician-focused resources
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Find essential drug information & advanced patient resources. Physicians Office Resource licenses drug information data from First DataBank and provides a portion of it as a free service to its physician-users. First DataBank is the leading provider of electronic drug information to the healthcare industry. Based on the widely accepted industry standard — the National Drug Data File® — NDDF Plus databases are backed by the most clinically verifiable evidence gathered to date.
Screenshots
Verdict
The clearest difference is in-app purchases: COSA at none against Autogenic Drainage's 2. Autogenic Drainage's advantage is ads (none vs shown) and update cadence (fortnightly vs every 3 months). On price, device support and iOS requirement 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
Both are free to download. Autogenic Drainage sells 2 one-off in-app purchases. COSA asks for nothing beyond the download.
Autogenic Drainage holds the better App Store score, 3.9 against 3.7. That said, the two scores are not equally well evidenced: Autogenic Drainage has 40 ratings behind it against 3, so its average is the more settled of the two.
Autogenic Drainage ships an update fortnightly, COSA every 3 months. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.
| Parameter | Autogenic Drainage | COSA |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (40 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 56.0% of reviews | — |
| Number of ratings | 40 — better | 3 |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 28 MB |
| Age rating | 9+ | 4+ |
| Developer | Polemics Applications LLC | MEDICAL EDUCATION RESOURCES, LLC |
Customer experience
Autogenic Drainage
COSA
In-app purchases
Autogenic Drainage
- Dollar Tip$0.99
- Five Dollar Tip$4.99
COSA
No in-app purchases
Questions
Is Autogenic Drainage free?
Is COSA free?
Which has better reviews, Autogenic Drainage or COSA?
Do Autogenic Drainage or COSA have ads?
Which is updated more often, Autogenic Drainage or COSA?
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