# Invoice One vs CircleCal

The clearest difference is iOS requirement: Invoice One at 13.0 against CircleCal's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Invoice One ships an update weekly, CircleCal fortnightly. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Invoice One | CircleCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 8 MB | 29 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [11 APPS](https://appshunter.io/developer/1695296256) | [Isaiah Alvarez](https://appshunter.io/developer/1874718878) |

## What reviewers say

### Invoice One

[App page](https://appshunter.io/ios/app/invoice-one-create-and-share/id6499128545)

**Features:** macOS Compatibility

**In-app purchases:** none


### CircleCal

[App page](https://appshunter.io/ios/app/circlecal/id6758738591)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Invoice One free?

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

### Is CircleCal free?

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

### Do Invoice One or CircleCal have ads?

Neither Invoice One nor CircleCal shows ads.

### Which is updated more often, Invoice One or CircleCal?

Invoice One ships an update weekly, and CircleCal fortnightly. Most recently, Invoice One was updated on October 9, 2026 and CircleCal on October 1, 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.*