# BOSTON FIT vs TNJ

The clearest difference is update cadence: TNJ at weekly against BOSTON FIT's every 3 months. 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.

BOSTON FIT ships an update every 3 months, TNJ weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BOSTON FIT | TNJ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 103 MB | 169 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [彬彬 龚](https://appshunter.io/developer/1642501074) | [Mohi Lifestile Solutions Private Limited](https://appshunter.io/developer/1734026265) |

## What reviewers say

### BOSTON FIT

[App page](https://appshunter.io/ios/app/boston-fit/id1661419749)

This app connects to smart wearable devices to track your exercise data. It seamlessly syncs your fitness information with Apple Health, allowing for a comprehensive overview of your activity.

**Highlights:** Connects to smart wearable devices, Records exercise data, Syncs data to Apple Health, Supports HealthKit integration

**Features:** macOS Compatibility

**In-app purchases:** none


### TNJ

[App page](https://appshunter.io/ios/app/tnj/id6760125974)

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

**In-app purchases:** none


## Frequently asked questions

### Is BOSTON FIT free?

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

### Is TNJ free?

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

### Do BOSTON FIT or TNJ have ads?

Neither BOSTON FIT nor TNJ shows ads.

### Which is updated more often, BOSTON FIT or TNJ?

BOSTON FIT ships an update every 3 months, and TNJ weekly. Most recently, BOSTON FIT was updated on November 3, 2026 and TNJ on October 31, 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.*