# Instalcat vs billdin

The clearest difference is update cadence: Instalcat at monthly against billdin's every 4 months. Instalcat also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Instalcat ships an update monthly, billdin every 4 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Instalcat | billdin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 27 MB | 15 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Instalcat Smart Projects S.L.](https://appshunter.io/developer/1549710588) | [Kairos Concept S.L.](https://appshunter.io/developer/1524920303) |

## What reviewers say

### Instalcat

[App page](https://appshunter.io/ios/app/instalcat/id1549710586)

**Features:** macOS Compatibility

**In-app purchases:** none


### billdin

[App page](https://appshunter.io/ios/app/billdin/id6450713491)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Instalcat free?

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

### Is billdin free?

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

### Do Instalcat or billdin have ads?

Neither Instalcat nor billdin shows ads.

### Which is updated more often, Instalcat or billdin?

Instalcat ships an update monthly, and billdin every 4 months. Most recently, Instalcat was updated on November 3, 2026 and billdin on November 3, 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.*