# iThermonitor vs Temperature + Blood Oxygen app

The clearest difference is rating: Temperature + Blood Oxygen app at 3.7 against iThermonitor's 2.7. Temperature + Blood Oxygen app also leads on update cadence (every 3 weeks vs every 2 months). iThermonitor's advantage is in-app purchases (none vs 3) and chart position (#122 vs unranked). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Temperature + Blood Oxygen app sells 3 in-app purchases, starting at $3.99 per month. iThermonitor asks for nothing beyond the download.

Temperature + Blood Oxygen app holds the better App Store score, 3.7 against 2.7. Both are backed by a comparable volume of ratings — 314 and 72 respectively. Written reviews point the same way: 15% of iThermonitor's written reviews are positive against 21% of Temperature + Blood Oxygen app's.

iThermonitor ships an update every 2 months, Temperature + Blood Oxygen app every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | iThermonitor | Temperature + Blood Oxygen app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (314 ratings)](https://appshunter.io/ios/app/ithermonitor/id696637855/reviews) | **[3.7 (72 ratings)](https://appshunter.io/ios/app/temperature-plus-blood-oxygen-app/id1544929861/reviews)** |
| Number of ratings | **314** | 72 |
| Positive reviews | 15.2% of reviews | **20.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#122** | — |
| Size | 53 MB | 25 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Raiing Medical Company](https://appshunter.io/developer/543439703) | [Andrey Kiselev](https://appshunter.io/developer/1544929863) |

## What reviewers say

### iThermonitor

[App page](https://appshunter.io/ios/app/ithermonitor/id696637855)

**Currently charting:** #122 Top Free · Medical (US App Store)

Continuously monitor your child's temperature with real-time data collection and analysis. Receive high temperature alerts and access expert fever management information. Track temperature trends and sync data with your health app for comprehensive care.

**Highlights:** 24/7 temperature monitoring, Real-time high temperature alerts, Temperature trend charting, Professional data analysis, Fever management information, Multi-child support, Health app integration

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

**In-app purchases:** none

**What reviewers like**

- ✅ Accurate temperature readings when working properly
- 🛡️ Effective fever monitoring without disturbing sleep
- 📱 Remote monitoring capability (when functioning)
- 🔔 Customizable temperature alerts and notifications
- ⏱️ Long-term reliability for some users (5+ years)

**What reviewers complain about**

- ❌ Requires external hardware device not clearly disclosed
- 🔗 Broken purchase links and unavailable sensors
- 📉 Product appears discontinued or abandoned
- 🚫 Misleading app store description and marketing
- 🔌 Requires proximity to device (5-10 feet range)

**Reported bugs**

- App crashes immediately after login
- Cannot enter birthdate in profile setup
- Remote mirroring functionality broken after updates
- Device connection wheel spins indefinitely
- Password reset feature non-functional

**Requested features**

- Apple Watch native integration and complications
- Cloud synchronization and multi-device mirroring
- Expanded temperature range settings (below 95°F)
- Selective alert controls (high/low temperature separately)
- Data export in text/CSV format instead of images


### Temperature + Blood Oxygen app

[App page](https://appshunter.io/ios/app/temperature-plus-blood-oxygen-app/id1544929861)

Monitor your body temperature and blood oxygen saturation levels. Visualize your health trends over time with this simple tracking tool. Gain insights into your well-being.

**Highlights:** Track body temperature, Monitor blood oxygen levels, View health trends, Simple interface, Privacy focused

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Temperature, Blood Oxygen Pro | $3.99 | per month |
| Temperature, SpO2 Pro | $3.99 | per month |
| Finger pulse oximeter diary | $14.99 | per year |


## Frequently asked questions

### Is iThermonitor free?

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

### Is Temperature + Blood Oxygen app free?

Temperature + Blood Oxygen app is free to download, with in-app purchases available.

### Which has better reviews, iThermonitor or Temperature + Blood Oxygen app?

Temperature + Blood Oxygen app is rated higher. iThermonitor averages 2.7 out of 5 from 314 ratings, while Temperature + Blood Oxygen app averages 3.7 from 72 ratings.

### Do iThermonitor or Temperature + Blood Oxygen app have ads?

Neither iThermonitor nor Temperature + Blood Oxygen app shows ads.

### Which is updated more often, iThermonitor or Temperature + Blood Oxygen app?

iThermonitor ships an update every 2 months, and Temperature + Blood Oxygen app every 3 weeks. Most recently, iThermonitor was updated on October 24, 2026 and Temperature + Blood Oxygen app on October 25, 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.*