# Invoice Mobile vs Slipp Plus

The clearest difference is in-app purchases: Slipp Plus at none against Invoice Mobile's 1. Slipp Plus also leads on iOS requirement (12.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Invoice Mobile sells 1 one-off in-app purchase. Slipp Plus asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Invoice Mobile | Slipp Plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 3 MB | 24 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Combain Mobile AB](https://appshunter.io/developer/448154758) | [Bjorn Lunden AB](https://appshunter.io/developer/1151091633) |

## What reviewers say

### Invoice Mobile

[App page](https://appshunter.io/ios/app/invoice-mobile-billing/id768226652)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Invoices | $17.99 | one-time |


### Slipp Plus

[App page](https://appshunter.io/ios/app/slipp-plus/id1542004288)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Mobile free?

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

### Is Slipp Plus free?

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

### Do Invoice Mobile or Slipp Plus have ads?

Neither Invoice Mobile nor Slipp Plus shows ads.

### Which is updated more often, Invoice Mobile or Slipp Plus?

Invoice Mobile ships an update every 2 months, and Slipp Plus every 2 months. Most recently, Invoice Mobile was updated on October 7, 2026 and Slipp Plus on October 8, 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.*