# EFXLink vs Sizz from hypersupp

The clearest difference is iOS requirement: EFXLink at 15.0 against Sizz from hypersupp's 17.0. 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.

EFXLink ships an update every 3 weeks, Sizz from hypersupp every 2 weeks. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | EFXLink | Sizz from hypersupp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/efxlink/id6444688070/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 24 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dongguan Enfitnix Technology Co., Ltd.](https://appshunter.io/developer/1656164350) | [莉 张](https://appshunter.io/developer/1873911037) |

## What reviewers say

### EFXLink

[App page](https://appshunter.io/ios/app/efxlink/id6444688070)

Control your Enfitnix bicycle taillights wirelessly via Bluetooth. Adjust brightness, alarm functions, and flashing modes. The app also allows for OTA updates and displays remaining battery power.

**Highlights:** Bluetooth taillight connection, Alarm function on/off, Brightness adjustment, Brake sensing switch, Automatic mode switch, OTA firmware updates, Battery power display

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

**In-app purchases:** none


### Sizz from hypersupp

[App page](https://appshunter.io/ios/app/sizz-from-hypersupp/id6775793819)

This app helps you find the right road bike size by recording your body measurements and comparing them to bike geometry. It features an offline catalog of 66 road bike models from 17 brands, allowing you to explore, save favorites, and get size suggestions.

**Highlights:** Record body measurements, Estimate geometry targets, Explore frame sizes, Offline bike catalog, Compare targets and frames, Save favorite bikes

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

**In-app purchases:** none


## Frequently asked questions

### Is EFXLink free?

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

### Is Sizz from hypersupp free?

Sizz from hypersupp is free to download, with no in-app purchases.

### Do EFXLink or Sizz from hypersupp have ads?

Neither EFXLink nor Sizz from hypersupp shows ads.

### Which is updated more often, EFXLink or Sizz from hypersupp?

EFXLink ships an update every 3 weeks, and Sizz from hypersupp every 2 weeks. Most recently, EFXLink was updated on October 10, 2026 and Sizz from hypersupp on October 19, 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.*