# Interstellar Card vs SlamPay

The clearest difference is update cadence: Interstellar Card at every 9 days against SlamPay's every 3 weeks. 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.

Interstellar Card ships an update every 9 days, SlamPay every 3 weeks. Both last shipped on September 19, 2026.

## The numbers

| Metric | Interstellar Card | SlamPay |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 44 MB | 47 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [InterstellarCTIBNK](https://appshunter.io/developer/1838049170) | [Copayment Mexico, S.A.P.I. de C.V.](https://appshunter.io/developer/1588279272) |

## What reviewers say

### Interstellar Card

[App page](https://appshunter.io/ios/app/interstellar-card/id6752109902)

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

**In-app purchases:** none


### SlamPay

[App page](https://appshunter.io/ios/app/slampay/id6753993427)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interstellar Card free?

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

### Is SlamPay free?

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

### Do Interstellar Card or SlamPay have ads?

Neither Interstellar Card nor SlamPay shows ads.

### Which is updated more often, Interstellar Card or SlamPay?

Interstellar Card ships an update every 9 days, and SlamPay every 3 weeks. Most recently, Interstellar Card was updated on September 19, 2026 and SlamPay on September 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*