# Thermometer Log vs Thermometer

The clearest difference is ads: Thermometer at none against Thermometer Log's shown. Thermometer also leads on update cadence (every 2 weeks vs every 2 months) and ratings volume (407 vs 6). Thermometer Log's advantage is review sentiment (50% vs 32%) and rating (4.8 vs 4.6). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Thermometer Log sells 1 one-off in-app purchase and Thermometer sells 6 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Thermometer Log holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Thermometer has 407 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of Thermometer Log's written reviews are positive against 32% of Thermometer's.

Thermometer Log ships an update every 2 months, Thermometer every 2 weeks. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Thermometer Log | Thermometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/thermometer-log/id1546929547/reviews)** | [4.6 (407 ratings)](https://appshunter.io/ios/app/thermometer-body-temperature/id6683301324/reviews) |
| Number of ratings | 6 | **407** |
| Positive reviews | **50.0% of reviews** | 32.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 59 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [199 Developments Private Limited](https://appshunter.io/developer/1531051207) |

## 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 |


### Thermometer

[App page](https://appshunter.io/ios/app/thermometer-body-temperature/id6683301324)

Estimate body temperature using your smartphone without a physical thermometer. Track heart rate, blood pressure, and sync with Apple Watch for real-time fever alerts. Log custom health data and generate shareable PDF reports.

**Highlights:** Temperature estimation without a thermometer, Apple Watch Series 8 sync for readings, High fever alerts, Blood pressure tracking and trend analysis, Custom health logs with notes, Apple Health sync, Shareable PDF reports

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week- Body Temperature Checker | $5.99 | per 7 days |
| Year Promo- Body Thermometer | $19.99 | per year |
| Year- Body Temperature Checker | $29.99 | per year |
| Yearly- Body Fever Checker | $29.99 | per year |
| Yearly - Thermometer + Blood Oxygen | $29.99 | per year |
| Lifetime- Body Fever Checker | $49.99 | one-time |

**What reviewers like**

- 🚀 Accurate temperature readings
- 👍 Helpful for tracking health issues
- 👍 Useful when no thermometer is available
- 👍 Reliable app with good support

**What reviewers complain about**

- 🐛 Inaccurate temperature readings
- 💰 Expensive subscription
- 🤖 Outdated user interface
- 🤔 Unclear free vs. premium features

**Reported bugs**

- Subscription issues and unexpected charges
- App not functioning as advertised

**Requested features**

- Option to default to Fahrenheit
- Ability to share breathing exercises
- Improved compatibility with newer devices


## Frequently asked questions

### Is Thermometer Log free?

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

### Is Thermometer free?

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

### Which has better reviews, Thermometer Log or Thermometer?

Thermometer Log is rated higher. Thermometer Log averages 4.8 out of 5 from 6 ratings, while Thermometer averages 4.6 from 407 ratings.

### Do Thermometer Log or Thermometer have ads?

Thermometer Log shows ads; Thermometer does not.

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

Thermometer Log ships an update every 2 months, and Thermometer every 2 weeks. Most recently, Thermometer Log was updated on September 21, 2026 and Thermometer on September 23, 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.*