# SAT Messenger vs KL500A

The clearest difference is iOS requirement: KL500A at 11.0 against SAT Messenger's 15.0. 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.

SAT Messenger ships an update every 2 weeks, KL500A every 4 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SAT Messenger | KL500A |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Size | 51 MB | 31 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [phwy](https://appshunter.io/developer/1687040072) | [磊磊 周](https://appshunter.io/developer/1708841052) |

## What reviewers say

### SAT Messenger

[App page](https://appshunter.io/ios/app/sat-messenger/id6448937534)

**Features:** macOS Compatibility

**In-app purchases:** none


### KL500A

[App page](https://appshunter.io/ios/app/kl500a/id6470735168)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SAT Messenger free?

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

### Is KL500A free?

KL500A is free to download, with no in-app purchases.

### Do SAT Messenger or KL500A have ads?

Neither SAT Messenger nor KL500A shows ads.

### Which is updated more often, SAT Messenger or KL500A?

SAT Messenger ships an update every 2 weeks, and KL500A every 4 weeks. Most recently, SAT Messenger was updated on October 24, 2026 and KL500A on October 7, 2026.

---

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