# Dr.Watson vs OASE

The clearest difference is price: OASE at Free against Dr.Watson's $2.99. OASE also leads on update cadence (monthly vs every 28 months). Dr.Watson's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

OASE is free to download; Dr.Watson costs $2.99 up front. OASE sells 3 in-app purchases, starting at $39.00 per month. Dr.Watson asks for nothing beyond the download.

Dr.Watson ships an update every 28 months, OASE monthly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Dr.Watson | OASE |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Monthly** |
| Monetization | Paid | — |
| Size | 60 MB | 64 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [ihanwel.com](https://appshunter.io/developer/296400161) | [Laura Israel](https://appshunter.io/developer/1783056583) |

## What reviewers say

### Dr.Watson

[App page](https://appshunter.io/ios/app/drwatson/id725163877)

This app helps you understand the ingredients in your food and drinks. It provides detailed information on food additives and their potential health risks, allowing you to make informed choices about what you consume. Access comprehensive data offline to identify potentially harmful substances anytime, anywhere.

**Highlights:** Food additive database, Health risk information, Offline data access, Ingredient filtering, Authoritative data sources

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OASE

[App page](https://appshunter.io/ios/app/oase/id6738943419)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $39.00 | per month |
| App Quarterly | $99.99 | per 3 months |
| Yearly | $399.99 | per year |


## Frequently asked questions

### Is Dr.Watson free?

Dr.Watson costs $2.99, with no in-app purchases.

### Is OASE free?

OASE is free to download, with in-app purchases available.

### Do Dr.Watson or OASE have ads?

Neither Dr.Watson nor OASE shows ads.

### Which is updated more often, Dr.Watson or OASE?

Dr.Watson ships an update every 28 months, and OASE monthly. Most recently, Dr.Watson was updated on November 1, 2026 and OASE on October 30, 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.*