# Callbox vs Faxy Invoice Maker & Estimates

The clearest difference is in-app purchases: Callbox at none against Faxy Invoice Maker & Estimates's 2. Faxy Invoice Maker & Estimates's advantage is update cadence (every 8 days vs monthly) and iOS requirement (12.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. Faxy Invoice Maker & Estimates sells 2 in-app purchases, starting at $12.99 per month. Callbox asks for nothing beyond the download.

Callbox ships an update monthly, Faxy Invoice Maker & Estimates every 8 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Callbox | Faxy Invoice Maker & Estimates |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Size | 112 MB | 93 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [L5](https://appshunter.io/developer/1419172243) | [Nicolas CHEVALARIAS](https://appshunter.io/developer/1482559861) |

## What reviewers say

### Callbox

[App page](https://appshunter.io/ios/app/callbox/id6472733652)

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

**In-app purchases:** none


### Faxy Invoice Maker & Estimates

[App page](https://appshunter.io/ios/app/faxy-invoice-maker-and-estimates/id6746700277)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access month | $12.99 | per month |
| Unlimited access year | $79.99 | per year |


## Frequently asked questions

### Is Callbox free?

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

### Is Faxy Invoice Maker & Estimates free?

Faxy Invoice Maker & Estimates is free to download, with in-app purchases available.

### Do Callbox or Faxy Invoice Maker & Estimates have ads?

Neither Callbox nor Faxy Invoice Maker & Estimates shows ads.

### Which is updated more often, Callbox or Faxy Invoice Maker & Estimates?

Callbox ships an update monthly, and Faxy Invoice Maker & Estimates every 8 days. Most recently, Callbox was updated on October 27, 2026 and Faxy Invoice Maker & Estimates on October 28, 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.*