# TachyMon vs Beyond Oximeter

The clearest difference is review sentiment: TachyMon at 58% against Beyond Oximeter's 13%. TachyMon also leads on rating (3.8 vs 2.2) and ratings volume (288 vs 90). Beyond Oximeter's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TachyMon sells 2 in-app purchases, starting at $2.99 per month. Beyond Oximeter asks for nothing beyond the download.

TachyMon holds the better App Store score, 3.8 against 2.2. Both are backed by a comparable volume of ratings — 288 and 90 respectively. Written reviews point the same way: 58% of TachyMon's written reviews are positive against 13% of Beyond Oximeter's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TachyMon | Beyond Oximeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (288 ratings)](https://appshunter.io/ios/app/tachymon/id1603517412/reviews)** | [2.2 (90 ratings)](https://appshunter.io/ios/app/beyond-oximeter/id1605638778/reviews) |
| Number of ratings | **288** | 90 |
| Positive reviews | **58.0% of reviews** | 13.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 36 MB | 20 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Whip Development Inc.](https://appshunter.io/developer/1603514887) | [Intelliworks, LLC](https://appshunter.io/developer/1448088763) |

## What reviewers say

### TachyMon

[App page](https://appshunter.io/ios/app/tachymon/id1603517412)

Receive immediate alerts for significant heart rate fluctuations, ideal for conditions like POTS or during exercise. Customize thresholds and receive detailed event tracking. Premium features offer advanced data visualization and reporting.

**Highlights:** Customizable heart rate threshold alerts, Haptic feedback for alerts, Real-time heart rate and average display, Alert event tracking and logging, Temporary alert silencing, Detailed monitoring data review, Shareable PDF reports (premium)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TachyMon Premium Monthly | $2.99 | per month |
| TachyMon Premium Annual | $19.99 | per year |

**What reviewers like**

- 🚀 Continuous monitoring
- 🚨 Helpful alerts for heart rate spikes/drops
- 📊 Useful data tracking and visualization
- 🤖 Customizable settings and thresholds
- 💯 Accurate heart rate measurements

**What reviewers complain about**

- 🔋 Drains Apple Watch battery quickly
- 🔒 Paywalled features that were previously free
- 🤯 Buggy and unreliable at times
- 📱 Lack of companion iPhone app for data review
- 🔇 Limited notification/alert customization

**Reported bugs**

- Frequent disconnections from heart rate monitor
- Inconsistent data sync between watch and phone
- Inability to reinstall app on new devices
- Freezing and crashing issues on latest updates

**Requested features**

- Add ability to log symptoms and notes
- Implement emergency contact alerts
- Improve data export and sharing options
- Enhance graphing and trend analysis tools
- Optimize battery usage and background monitoring


### Beyond Oximeter

[App page](https://appshunter.io/ios/app/beyond-oximeter/id1605638778)

Monitor your vital signs like SpO2, pulse, and respiratory rate in real-time. Record, share, and view trend graphs of your measurements. Requires a Bluetooth-enabled device to function.

**Highlights:** Real-time SpO2 and pulse rate monitoring, Respiratory rate and PI tracking, Vital sign trend graphs, Data recording and playback, Share measurement reports, Apple Health sync

**In-app purchases:** none

**What reviewers like**

- 👍 Device hardware seems good
- 👍 Guest mode works without issue
- 👍 Syncs well with Apple Health
- 👍 Easy to use app
- 👍 Transfers data to Apple Health without issues

**What reviewers complain about**

- 🐛 Cannot create account
- 🐛 Cannot change password
- 🐛 Password too long or not strong enough
- 🐛 Bluetooth functionality does not work
- 🐛 App is unstable and crashes

**Reported bugs**

- Cannot change password
- Cannot create an account
- Password requirements are too strict or unclear
- Bluetooth pairing issues
- App freezes or crashes

**Requested features**

- Show tracings on the report
- Allow recording notes for readings
- App for Apple Watch
- More history at a glance
- Dark mode/blackout feature for screen brightness


## Frequently asked questions

### Is TachyMon free?

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

### Is Beyond Oximeter free?

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

### Which has better reviews, TachyMon or Beyond Oximeter?

TachyMon is rated higher. TachyMon averages 3.8 out of 5 from 288 ratings, while Beyond Oximeter averages 2.2 from 90 ratings.

### Do TachyMon or Beyond Oximeter have ads?

Neither TachyMon nor Beyond Oximeter shows ads.

### Which is updated more often, TachyMon or Beyond Oximeter?

TachyMon ships an update every 3 months, and Beyond Oximeter every 3 months. Most recently, TachyMon was updated on October 27, 2026 and Beyond Oximeter on October 24, 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.*