Thermometer Log vs GrowX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thermometer Log
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.
- Easy temperature recording
- Celsius and Fahrenheit support
- Weekly, monthly, and 3-month graphs
- Average temperature display
- Data correction and addition
- CSV export
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This app is an app that allows you to easily record your body temperature. You can record many times a day! In addition, two units of body temperature can be used: Celsius (℃) and Fahrenheit (℉). Just move the scale on the home screen left and right to set the body temperature, and tap the save button to easily record the body temperature and save time! Since it can be recorded many times a day, it is ideal for recording body temperature in the morning and at night. On the "Analysis" screen, a graph of weekly, monthly, and 3-month body temperature is displayed. In addition, the average body temperature for that period is displayed. You can check the data by tapping the graph. On the "History" screen, the record of the body temperature of the year and month selected in the upper right of the screen is displayed. You can correct the body temperature data by double tapping the data. If you forget to record the body temperature data, you can add it by tapping the "Add" button on the upper left of the screen. When you tap the "Add" button, the input screen will be displayed. Select and add the date, time, and body temperature. By tapping the "Export CSV file" button, you can convert the history data to a CSV file and attach it to an email for export. On the "Settings" screen, you can set the unit of body temperature. You can also set the day of the week at the beginning of the week in the weekly graph. You can choose to start on Monday or Sunday. In the free version, you can check the body temperature record for up to one week. If you have an unlimited recording period and want to check monthly or 3 month data, please consider purchasing the premium version in the app. ---------------------- Terms of Service and Privacy Policy: https://akikibai-labolatory.jimdofree.com/privacy-policy-log-apps/
GrowX
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.
- 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
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[GrowX] is an app dedicated to recording a child's growth journey. It supports data entry for multiple children and allows other family members to be invited to participate in managing together. After the child grows up, they can also view the growth data managed by their parents through authorized accounts, allowing them to revisit their developmental process. Milk Intake Record: Tracks daily, monthly, and yearly milk intake from birth, helping new parents monitor their infant’s appetite and adjust feeding schedules as needed. Height and Weight: Longitudinally records and tracks a child’s height, weight, and BMI, enabling early detection and prevention of premature or delayed development issues. Temperature Record: Monitors temperature changes during illness, logs times when fever-reducing medication is administered, and assists in tracking the progression of sickness. Additionally, it allows for the storage of medical test results and medication lists for easy reference during follow-up visits. Growth Record: Documents daily milestones in a child’s life, including feeding, sleeping, learning, and playing, capturing every small moment of growth. Baby Teeth Record: Tracks the emergence of baby teeth, their shedding, and the eruption of permanent teeth, providing detailed dental development data. Vision Record: Generates eye axis growth curves, stores examination reports, tracks outdoor activity, estimates refractive power, and provides real-time monitoring of vision health to help prevent myopia. Honors: Records and preserves the shining moments of a child’s academic life, digitizing paper certificates into permanent electronic versions, ensuring that every achievement is kept safe and accessible.
Screenshots
Verdict
The clearest difference is ads: GrowX at none against Thermometer Log's shown. GrowX also leads on update cadence (fortnightly 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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 fortnightly. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.
| Parameter | Thermometer Log | GrowX |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 6 MB | 241 MB |
| Age rating | 4+ | 4+ |
| Developer | Kei Suefuji | 凤磊 李 |
Customer experience
Thermometer Log
GrowX
In-app purchases
Thermometer Log
- PREMIUM$4.99
GrowX
- 月度会员$0.99
- 终身会员(限时折扣)$2.99
- 年度会员$4.99
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- 终身会员(限时活动价)$9.99
- 终身会员$24.99









