# Twixl Viewer Classic vs GemTot SDK

The clearest difference is update cadence: Twixl Viewer Classic at every 3 weeks against GemTot SDK's every 3 months. GemTot SDK's advantage is iOS requirement (9.0 vs 15.0). 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.

Twixl Viewer Classic ships an update every 3 weeks, GemTot SDK every 3 months. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Twixl Viewer Classic | GemTot SDK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/gemtot-sdk/id967907684/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | — | Free |
| Size | 32 MB | 18 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Twixl media](https://appshunter.io/developer/603913750) | [PassKit, Inc.](https://appshunter.io/developer/920691846) |

## What reviewers say

### Twixl Viewer Classic

[App page](https://appshunter.io/ios/app/twixl-viewer-classic/id577102011)

**Features:** Vision Pro support

**In-app purchases:** none


### GemTot SDK

[App page](https://appshunter.io/ios/app/gemtot-sdk/id967907684)

This utility app enables users to configure, test, and demonstrate GemTot Bluetooth beacons. It showcases proximity detection, distance calculation using RSSI, and triggering local notifications or Apple Wallet content when entering or exiting beacon regions.

**Highlights:** Beacon configuration, Distance demonstration, Proximity detection, RSSI and power calibration, Lock screen notifications, Apple Wallet integration demo

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Twixl Viewer Classic free?

Twixl Viewer Classic is free to download, with no in-app purchases.

### Is GemTot SDK free?

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

### Do Twixl Viewer Classic or GemTot SDK have ads?

Neither Twixl Viewer Classic nor GemTot SDK shows ads.

### Which is updated more often, Twixl Viewer Classic or GemTot SDK?

Twixl Viewer Classic ships an update every 3 weeks, and GemTot SDK every 3 months. Most recently, Twixl Viewer Classic was updated on October 4, 2026 and GemTot SDK on October 1, 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.*