# mobilePDR vs COSA

The clearest difference is rating: COSA at 3.7 against mobilePDR's 3.2. mobilePDR's advantage is ads (none vs shown) and ratings volume (107 vs 3). On price, update cadence, in-app purchases and device support there is nothing between them.

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

COSA holds the better App Store score, 3.7 against 3.2. That said, the two scores are not equally well evidenced: mobilePDR has 107 ratings behind it against 3, so its average is the more settled of the two.

mobilePDR ships an update every 2 months, COSA every 3 months. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | mobilePDR | COSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (107 ratings)](https://appshunter.io/ios/app/mobilepdr/id964947063/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/cosa-medication-information/id1626158440/reviews)** |
| Number of ratings | **107** | 3 |
| Positive reviews | 31.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Ad-supported |
| Size | 112 MB | 28 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PDR Equity, LLC](https://appshunter.io/developer/781863012) | [MEDICAL EDUCATION RESOURCES, LLC](https://appshunter.io/developer/1561046509) |

## What reviewers say

### mobilePDR

[App page](https://appshunter.io/ios/app/mobilepdr/id964947063)

Access up-to-date drug prescribing information for healthcare professionals. Quickly search thousands of drug summaries, compare medications, and check for interactions. Identify pills with color photos and imprint codes.

**Highlights:** Concise drug summaries, Drug comparison tool, Drug interaction checker, Pill identification with photos, Search by brand, generic, or class, Continuous updates

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great information resource
- 👍 Useful for medical professionals
- 👍 Detailed drug information
- 👍 No subscriptions needed
- 👍 Quick and accurate descriptions

**What reviewers complain about**

- ⚫ Unreadable in dark mode
- ⚫ Dark text on black background
- ⚫ Poor contrast issues
- 🐛 Buggy at times
- 🐛 App crashes frequently

**Reported bugs**

- Text unreadable in dark mode
- Black text on black background
- App crashes during comparison
- App crashes on launch
- Login errors

**Requested features**

- Add dark mode option
- Improve readability in dark mode
- Allow landscape orientation
- Fix drug identification errors
- Add DEA/drug scheduling tab


### COSA

[App page](https://appshunter.io/ios/app/cosa-medication-information/id1626158440)

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.

**Highlights:** Essential drug information, Advanced patient resources, Licensed drug data, Industry-standard databases, Physician-focused resources

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is mobilePDR free?

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

### Is COSA free?

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

### Which has better reviews, mobilePDR or COSA?

COSA is rated higher. mobilePDR averages 3.2 out of 5 from 107 ratings, while COSA averages 3.7 from 3 ratings.

### Do mobilePDR or COSA have ads?

COSA shows ads; mobilePDR does not.

### Which is updated more often, mobilePDR or COSA?

mobilePDR ships an update every 2 months, and COSA every 3 months. Most recently, mobilePDR was updated on October 22, 2026 and COSA on October 14, 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.*