# WeighSync vs C3ntro

The clearest difference is ads: WeighSync at none against C3ntro's shown. WeighSync also leads on update cadence (every 3 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WeighSync ships an update every 3 weeks, C3ntro every 3 months. The most recent releases landed on October 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | WeighSync | C3ntro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/weighsync/id6458537754/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 4.5% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 31 MB | 126 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Conmo Electronic Company Limited](https://appshunter.io/developer/1329893148) | [Timko, S.A](https://appshunter.io/developer/1711584911) |

## What reviewers say

### WeighSync

[App page](https://appshunter.io/ios/app/weighsync/id6458537754)

This app simplifies weight tracking by connecting to smart scales via Bluetooth. It allows users to easily record and visualize their weight data without requiring registration or an internet connection, prioritizing user privacy.

**Highlights:** Bluetooth smart scale connection, Weight data recording, Weight data visualization, No registration required, Offline functionality, User data privacy

**In-app purchases:** none


### C3ntro

[App page](https://appshunter.io/ios/app/c3ntro/id6469114270)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is WeighSync free?

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

### Is C3ntro free?

C3ntro is free to download, with no in-app purchases.

### Do WeighSync or C3ntro have ads?

C3ntro shows ads; WeighSync does not.

### Which is updated more often, WeighSync or C3ntro?

WeighSync ships an update every 3 weeks, and C3ntro every 3 months. Most recently, WeighSync was updated on October 1, 2026 and C3ntro on September 9, 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.*