# iWell vs GreaseBook

iWell and GreaseBook both sit at 4.0 stars, but that hides the real split: 85% of GreaseBook's written reviews are positive against 67% of iWell's. GreaseBook also leads on ratings volume (63 vs 4) and update cadence (every 11 days vs monthly). On price, rating, 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.

On the App Store both sit at effectively the same score — 4.0 for iWell against 3.9 for GreaseBook. That said, the two scores are not equally well evidenced: GreaseBook has 63 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 67% of iWell's written reviews are positive against 85% of GreaseBook's.

iWell ships an update monthly, GreaseBook every 11 days. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | iWell | GreaseBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/iwell/id511118809/reviews)** | [3.9 (63 ratings)](https://appshunter.io/ios/app/greasebook/id1035217729/reviews) |
| Number of ratings | 4 | **63** |
| Positive reviews | 66.7% of reviews | **85.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free | Free |
| Size | 124 MB | 220 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Designio](https://appshunter.io/developer/506446257) | [GreaseBook, LLC](https://appshunter.io/developer/543622294) |

## What reviewers say

### iWell

[App page](https://appshunter.io/ios/app/iwell/id511118809)

Monitor real-time and historical production metrics for your wells and regions. Make informed business decisions with personalized data views tailored to your company role, helping to avoid costly downtime.

**Highlights:** Real-time production metrics, Historical production data, Production region monitoring, Personalized data views, Avoid costly downtime, Informed business decisions

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 iWell free?

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

### Is GreaseBook free?

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

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

iWell is rated higher. iWell averages 4.0 out of 5 from 4 ratings, while GreaseBook averages 3.9 from 63 ratings.

### Do iWell or GreaseBook have ads?

Neither iWell nor GreaseBook shows ads.

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

iWell ships an update monthly, and GreaseBook every 11 days. Most recently, iWell was updated on September 13, 2026 and GreaseBook on September 17, 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.*