# Thermometer Log vs GrowX

The clearest difference is ads: GrowX at none against Thermometer Log's shown. GrowX also leads on update cadence (every 3 weeks vs every 2 months) and rating (5.0 vs 4.8). Thermometer Log's advantage is ratings volume (6 vs 1). 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 GrowX sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

GrowX holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Thermometer Log has 6 ratings behind it against 1, so its average is the more settled of the two.

Thermometer Log ships an update every 2 months, GrowX every 3 weeks. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Thermometer Log | GrowX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6 ratings)](https://appshunter.io/ios/app/thermometer-log/id1546929547/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/growx-temperature-record/id1636849057/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 241 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [凤磊 李](https://appshunter.io/developer/1631940187) |

## 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 |


### GrowX

[App page](https://appshunter.io/ios/app/growx-temperature-record/id1636849057)

This app helps parents meticulously track their child's growth milestones, from feeding and sleep to physical development and academic achievements. It allows for collaborative management by family members and provides a digital archive of a child's developmental journey.

**Highlights:** Milk intake tracking, Height, weight, and BMI monitoring, Fever and medication logging, Daily milestone documentation, Baby teeth development tracking, Vision health monitoring, Digital certificate storage

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | one-time |
| 终身会员(限时折扣) | $2.99 | one-time |
| 年度会员 | $4.99 | one-time |
| 终身会员(限时活动价) | $9.99 | one-time |
| 终身会员 | $24.99 | one-time |


## Frequently asked questions

### Is Thermometer Log free?

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

### Is GrowX free?

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

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

GrowX is rated higher. Thermometer Log averages 4.8 out of 5 from 6 ratings, while GrowX averages 5.0 from 1 ratings.

### Do Thermometer Log or GrowX have ads?

Thermometer Log shows ads; GrowX does not.

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

Thermometer Log ships an update every 2 months, and GrowX every 3 weeks. Most recently, Thermometer Log was updated on October 10, 2026 and GrowX on October 20, 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.*