# EfiOil vs Invoice Generator & Maker

The clearest difference is in-app purchases: EfiOil at none against Invoice Generator & Maker's 3. EfiOil also leads on update cadence (every 10 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Generator & Maker sells 3 in-app purchases, starting at $3.99 per 7 days. EfiOil asks for nothing beyond the download.

EfiOil ships an update every 10 days, Invoice Generator & Maker every 6 months. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | EfiOil | Invoice Generator & Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (15 ratings)](https://appshunter.io/ios/app/invoice-generator-and-maker/id6469569068/reviews)** |
| Number of ratings | — | **15** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 19 MB | 12 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EfiData, S.L.](https://appshunter.io/developer/972434839) | [Davin App LTD](https://appshunter.io/developer/1516282454) |

## What reviewers say

### EfiOil

[App page](https://appshunter.io/ios/app/efioil/id972434840)

**In-app purchases:** none


### Invoice Generator & Maker

[App page](https://appshunter.io/ios/app/invoice-generator-and-maker/id6469569068)

Quickly create professional, secure, and organized invoices and estimates with a user-friendly interface. Streamline your billing process efficiently. Offers premium upgrades for enhanced features.

**Highlights:** Swift invoice generation, Secure and organized billing, User-friendly interface, Create estimates, Premium upgrades available

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Generator Weekly | $3.99 | per 7 days |
| Invoice Yearly | $19.49 | per year |
| Invoice Generator Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is EfiOil free?

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

### Is Invoice Generator & Maker free?

Invoice Generator & Maker is free to download, with in-app purchases available.

### Do EfiOil or Invoice Generator & Maker have ads?

Neither EfiOil nor Invoice Generator & Maker shows ads.

### Which is updated more often, EfiOil or Invoice Generator & Maker?

EfiOil ships an update every 10 days, and Invoice Generator & Maker every 6 months. Most recently, EfiOil was updated on October 2, 2026 and Invoice Generator & Maker on October 12, 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.*