# WellDatabase vs GreaseBook

The clearest difference is review sentiment: GreaseBook at 85% against WellDatabase's 17%. GreaseBook also leads on rating (3.9 vs 2.9) and in-app purchases (none vs 4). WellDatabase's advantage is iOS requirement (8.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. WellDatabase sells 4 one-off in-app purchases. GreaseBook asks for nothing beyond the download.

GreaseBook holds the better App Store score, 3.9 against 2.9. Both are backed by a comparable volume of ratings — 14 and 63 respectively. Written reviews point the same way: 17% of WellDatabase's written reviews are positive against 85% of GreaseBook's.

WellDatabase ships an update every 3 months, GreaseBook every 11 days. The most recent releases landed on June 1, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | WellDatabase | GreaseBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (14 ratings)](https://appshunter.io/ios/app/welldatabase/id553328644/reviews) | **[3.9 (63 ratings)](https://appshunter.io/ios/app/greasebook/id1035217729/reviews)** |
| Number of ratings | 14 | **63** |
| Positive reviews | 16.7% of reviews | **85.2% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 31 MB | 220 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ctrlDev](https://appshunter.io/developer/379776628) | [GreaseBook, LLC](https://appshunter.io/developer/543622294) |

## What reviewers say

### WellDatabase

[App page](https://appshunter.io/ios/app/welldatabase/id553328644)

Access a vast database of over 5 million oil and gas wells across North America. Search for permits, production, completion data, and view shale plays and pipelines on a map. Download well files, including logs, for offline analysis.

**Highlights:** Search 5 million+ wells, View permits and production data, Access completion details, Map shale plays and pipelines, Download well files and logs

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Subscription | $14.99 | one-time |
| Basic Subscription | $99.99 | one-time |
| Premium Subscription Upgrade | $149.99 | one-time |
| Premium Subscription | $249.99 | one-time |


### GreaseBook

[App page](https://appshunter.io/ios/app/greasebook/id1035217729)

Streamline oil and gas production reporting with this mobile solution. Operators can collect data, submit reports, and communicate with field teams in real-time. Pumpers can eliminate paper reports and ensure timely payments by submitting digital updates.

**Highlights:** Field data collection, Digital report submission, Real-time communication, Photo capture of run tickets, Organized production data, Eliminate paper reports

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

**In-app purchases:** none


## Frequently asked questions

### Is WellDatabase free?

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

### Is GreaseBook free?

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

### Which has better reviews, WellDatabase or GreaseBook?

GreaseBook is rated higher. WellDatabase averages 2.9 out of 5 from 14 ratings, while GreaseBook averages 3.9 from 63 ratings.

### Do WellDatabase or GreaseBook have ads?

Neither WellDatabase nor GreaseBook shows ads.

### Which is updated more often, WellDatabase or GreaseBook?

WellDatabase ships an update every 3 months, and GreaseBook every 11 days. Most recently, WellDatabase was updated on June 1, 2026 and GreaseBook on September 17, 2026.

---

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