# i vs Fast Simple Invoice Maker

The clearest difference is in-app purchases: i at none against Fast Simple Invoice Maker's 4. Fast Simple Invoice Maker's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (18.2 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Fast Simple Invoice Maker sells 4 one-off in-app purchases. i asks for nothing beyond the download.

i ships an update every 6 weeks, Fast Simple Invoice Maker fortnightly. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | i | Fast Simple Invoice Maker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Size | 68 MB | 11 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Idopte](https://appshunter.io/developer/1497494931) | [Eric Savoie](https://appshunter.io/developer/1695096773) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-scm-mobile/id1616513506)

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

**In-app purchases:** none


### Fast Simple Invoice Maker

[App page](https://appshunter.io/ios/app/fast-simple-invoice-maker/id6752559476)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Midnight Theme | $0.49 | one-time |
| Forest Theme | $0.49 | one-time |
| Warm Paper Theme | $0.49 | one-time |
| Theme - Ocean | $0.49 | one-time |


## Frequently asked questions

### Is i free?

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

### Is Fast Simple Invoice Maker free?

Fast Simple Invoice Maker is free to download, with in-app purchases available.

### Do i or Fast Simple Invoice Maker have ads?

Neither i nor Fast Simple Invoice Maker shows ads.

### Which is updated more often, i or Fast Simple Invoice Maker?

i ships an update every 6 weeks, and Fast Simple Invoice Maker fortnightly. Most recently, i was updated on October 16, 2026 and Fast Simple Invoice Maker on October 9, 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.*