# TFI Trainer vs Hormetic

The clearest difference is price: TFI Trainer at Free against Hormetic's $2.99. TFI Trainer also leads on iOS requirement (11.0 vs 18.6). Hormetic's advantage is chart position (#196 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

TFI Trainer is free to download; Hormetic costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TFI Trainer ships an update every 10 days, Hormetic every 5 days. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | TFI Trainer | Hormetic |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hormetic/id6766344765/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | — | Paid |
| Best chart rank | — | **#196** |
| Size | 255 MB | 10 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [The FIT Institute PC](https://appshunter.io/developer/1462091144) | [Avesta Forge LLC](https://appshunter.io/developer/1164532185) |

## What reviewers say

### TFI Trainer

[App page](https://appshunter.io/ios/app/tfi-trainer/id6443689104)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hormetic

[App page](https://appshunter.io/ios/app/hormetic/id6766344765)

**Currently charting:** #196 Top Paid · Health & Fitness (US App Store)

This app tracks your body's response to heat exposure using heart rate and manually entered temperature. It provides detailed session data, a heat-dose score, and a history of your thermal-dose sessions. Your data remains private on your device.

**Highlights:** Heart-rate tracking during sessions, Three-zone classification with color-coded badges, Estimated heat-dose score calculation, Per-session detail and full history, Algorithm versioning for transparency, Private data architecture, no account needed

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TFI Trainer free?

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

### Is Hormetic free?

Hormetic costs $2.99, with no in-app purchases.

### Do TFI Trainer or Hormetic have ads?

Neither TFI Trainer nor Hormetic shows ads.

### Which is updated more often, TFI Trainer or Hormetic?

TFI Trainer ships an update every 10 days, and Hormetic every 5 days. Most recently, TFI Trainer was updated on October 14, 2026 and Hormetic on October 16, 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.*