# ClientDrawer vs # Simple Invoice

The clearest difference is price: # Simple Invoice at Free against ClientDrawer's $4.99. # Simple Invoice also leads on update cadence (every 8 days vs every 3 weeks) and iOS requirement (15.6 vs 17.6). ClientDrawer's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

# Simple Invoice is free to download; ClientDrawer costs $4.99 up front. # Simple Invoice sells 2 in-app purchases, starting at $1.99 per month. ClientDrawer asks for nothing beyond the download.

ClientDrawer ships an update every 3 weeks, # Simple Invoice every 8 days. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ClientDrawer | # Simple Invoice |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Size | 71 MB | 48 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PRESONIC Software](https://appshunter.io/developer/1363167405) | [YUKI TANAIKE](https://appshunter.io/developer/478558546) |

## What reviewers say

### ClientDrawer

[App page](https://appshunter.io/ios/app/clientdrawer/id6740458993)

**Features:** Vision Pro support

**In-app purchases:** none


### # Simple Invoice

[App page](https://appshunter.io/ios/app/simple-invoice/id6761528129)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Pro (Monthly) | $1.99 | per month |
| Invoice Pro (Annual) | $18.00 | per year |


## Frequently asked questions

### Is ClientDrawer free?

ClientDrawer costs $4.99, with no in-app purchases.

### Is # Simple Invoice free?

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

### Do ClientDrawer or # Simple Invoice have ads?

Neither ClientDrawer nor # Simple Invoice shows ads.

### Which is updated more often, ClientDrawer or # Simple Invoice?

ClientDrawer ships an update every 3 weeks, and # Simple Invoice every 8 days. Most recently, ClientDrawer was updated on October 11, 2026 and # Simple Invoice on October 18, 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.*