# Thermometer Log vs HotTrain

The clearest difference is ads: HotTrain at none against Thermometer Log's shown. HotTrain also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Thermometer Log sells 1 one-off in-app purchase and HotTrain sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Thermometer Log ships an update every 2 months, HotTrain every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Thermometer Log | HotTrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/thermometer-log/id1546929547/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 21 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [金明 陈](https://appshunter.io/developer/6794974155) |

## What reviewers say

### Thermometer Log

[App page](https://appshunter.io/ios/app/thermometer-log/id1546929547)

Easily record and track your body temperature with this intuitive app. View historical data, analyze trends with graphs, and export your records. Supports both Celsius and Fahrenheit units.

**Highlights:** Easy temperature recording, Celsius and Fahrenheit support, Weekly, monthly, and 3-month graphs, Average temperature display, Data correction and addition, CSV export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREMIUM | $4.99 | one-time |


### HotTrain

[App page](https://appshunter.io/ios/app/hottrain-strength-and-workouts/id6795034980)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $24.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Thermometer Log free?

Thermometer Log is free to download, with in-app purchases available.

### Is HotTrain free?

HotTrain is free to download, with in-app purchases available.

### Do Thermometer Log or HotTrain have ads?

Thermometer Log shows ads; HotTrain does not.

### Which is updated more often, Thermometer Log or HotTrain?

Thermometer Log ships an update every 2 months, and HotTrain every 2 weeks. Most recently, Thermometer Log was updated on November 7, 2026 and HotTrain 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.*