# Forsta SDK vs TopPay M3

The clearest difference is update cadence: TopPay M3 at every 8 days against Forsta SDK's every 3 months. TopPay M3 also leads on iOS requirement (11.0 vs 16.0). 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.

Forsta SDK ships an update every 3 months, TopPay M3 every 8 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Forsta SDK | TopPay M3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Size | 24 MB | 4 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Forsta, Inc.](https://appshunter.io/developer/670071637) | [Shenzhen Topwise Communication Co., Ltd.](https://appshunter.io/developer/1481310914) |

## What reviewers say

### Forsta SDK

[App page](https://appshunter.io/ios/app/forsta-sdk/id1112679857)

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

**In-app purchases:** none


### TopPay M3

[App page](https://appshunter.io/ios/app/toppay-m3/id6464456349)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Forsta SDK free?

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

### Is TopPay M3 free?

TopPay M3 is free to download, with no in-app purchases.

### Do Forsta SDK or TopPay M3 have ads?

Neither Forsta SDK nor TopPay M3 shows ads.

### Which is updated more often, Forsta SDK or TopPay M3?

Forsta SDK ships an update every 3 months, and TopPay M3 every 8 days. Most recently, Forsta SDK was updated on November 2, 2026 and TopPay M3 on November 3, 2026.

---

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