# Billma vs OPEN EX

The clearest difference is in-app purchases: OPEN EX at none against Billma's 1. OPEN EX also leads on ads (none vs shown). Billma's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Billma sells 1 in-app purchase, starting at $4.99 per month. OPEN EX asks for nothing beyond the download.

Billma ships an update every 6 weeks, OPEN EX monthly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Billma | OPEN EX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Monthly** |
| Size | 41 MB | 44 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACTN K.K.](https://appshunter.io/developer/1519939443) | [RIK Corporation](https://appshunter.io/developer/507134227) |

## What reviewers say

### Billma

[App page](https://appshunter.io/ios/app/billma/id1519939441)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BillmaPlus | $4.99 | per month |


### OPEN EX

[App page](https://appshunter.io/ios/app/open-ex/id6473357021)

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

**In-app purchases:** none


## Frequently asked questions

### Is Billma free?

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

### Is OPEN EX free?

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

### Do Billma or OPEN EX have ads?

Billma shows ads; OPEN EX does not.

### Which is updated more often, Billma or OPEN EX?

Billma ships an update every 6 weeks, and OPEN EX monthly. Most recently, Billma was updated on October 6, 2026 and OPEN EX 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.*