# E vs Invoice Generator | SIMPO

The clearest difference is in-app purchases: E at none against Invoice Generator | SIMPO's 2. Invoice Generator | SIMPO's advantage is update cadence (daily vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Generator | SIMPO sells 2 in-app purchases, starting at $1.99 per month. E asks for nothing beyond the download.

E ships an update every 3 weeks, Invoice Generator | SIMPO daily. The most recent releases landed on June 1, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | E | Invoice Generator | SIMPO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 81 MB | 26 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [E-SERVICES PLATFORM W.L.L](https://appshunter.io/developer/1444427311) | [Karma Holdings LLC](https://appshunter.io/developer/1801721695) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-invoice-gate-e/id6470737832)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Generator | SIMPO

[App page](https://appshunter.io/ios/app/invoice-generator-simpo/id6741481913)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SIMPO monthly subscription | $1.99 | per month |
| SIMPO yearly subscription | $9.99 | per year |


## Frequently asked questions

### Is E free?

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

### Is Invoice Generator | SIMPO free?

Invoice Generator | SIMPO is free to download, with in-app purchases available.

### Do E or Invoice Generator | SIMPO have ads?

Neither E nor Invoice Generator | SIMPO shows ads.

### Which is updated more often, E or Invoice Generator | SIMPO?

E ships an update every 3 weeks, and Invoice Generator | SIMPO daily. Most recently, E was updated on June 1, 2026 and Invoice Generator | SIMPO on May 16, 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.*