TachyMon vs KiT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TachyMon
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.
- 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)
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Get rapid alerts for significant heart rate changes due to POTS, tachycardia, exercise or other activities. Features: - Haptic alerts based on custom threshold levels. - Customizable upper and lower threshold levels for current heart rate and difference from recent average. - The main display shows: current heart rate, moving average of recent heart rate, and delta of current heart rate to average. - Display colors change to show severity of alert. - The app tracks alert events with start time of event, event duration, starting average heart rate, and maximum or minimum heart rate during event. - Triple tap to temporarily silence alerts. - Review detailed monitoring data on the companion iPhone app. Premium features: - View detailed heart rate chart for each event - Share event info directly from watch, or export from iPhone to Photos app - Run monitoring sessions directly on your iPhone, without an Apple Watch, by connecting a Bluetooth heart rate sensor - Generate a shareable PDF report for each session - Add notes and symptoms to Alert Events - Export Alert Event raw heart rate data to .csv - View live session data on the iPhone companion app - View a summary of Alert Events over last week / month / year TachyMon was created by the developer for his niece Alex, who was diagnosed with Postural Orthostatic Tachycardia Syndrome (POTS) in the fall of 2021. Alex was experiencing frequent fainting, and her family noticed the episodes often followed a rapid rise in her heart rate. She wanted a heads-up the moment that started happening. Alex uses TachyMon's alerts as a cue to sit or crouch down when her heart rate climbs quickly, and she finds the app helps her feel a bit more in control of her day. It is a simple but specialized app, and we hope it may help others with POTS, or anyone who wants to be alerted to changes in their heart rate. APPLE HEALTH TachyMon integrates with the Apple Health app. TachyMon stores workout information (including heart rate) with the Apple Health app. WARNING: It is important to consult with medical professionals if you are concerned about your health. The TachyMon app is intended for informational purposes only. It is not a substitute for specialized medical care. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
KiT
A minimalist interval timer designed for efficient workouts. It allows users to build custom routines with warmups, work, rest, and cooldown periods, offering voice cues and lock screen integration. This app focuses on simplicity and immediate use without ads or subscriptions.
- Customizable workout builder
- Voice and sound cues
- Lock screen and Dynamic Island integration
- Apple Watch mirroring and health tracking
- Minimalist, distraction-free interface
- Offline functionality
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My daughter wanted an interval timer. Simple, right? Except every one she tried was junk - ads between rounds, accounts to create, bugs, subscriptions… for a stopwatch that counts backwards. She just wanted to work out. So I built her one. KiT: Kara's interval Trainer. No ads. No subscription. No account. No tracking. Buy it once, own it forever. BUILD YOUR WORKOUT Dial in warmup, work, rest, and cooldown, pick your rounds, and see the total time as you edit. Name your workouts and keep them ready on the home screen. KiT is opinionated: no pause button, every round the same length, four saved workouts and no more. You've used the timers that take twenty minutes to configure - this one takes twenty seconds. If you need per-round custom splits, this isn't your app. If you want to press start and work out, it is. CUES Voice announcements for every phase and round. Clean 3-2-1 countdown beeps that mix with your music instead of interrupting it. Toggle voice, beeps, and haptics per workout. WORKS WITH YOUR PHONE LOCKED Your current phase, round, and a live countdown stay on the Lock Screen and in the Dynamic Island. Lock your phone, drop it on the mat, and trust the timer. MADE FOR APPLE WATCH Your watch joins in automatically: a live mirror of phase, countdown, and round, with haptic taps on your wrist. It records a real HIIT session too - heart rate and calories go to Health, and every workout counts toward your rings. DESIGNED TO DISAPPEAR A focused, dark, monospaced interface with one job: showing you the time. Big countdown, progress ring, your round — nothing else. Full VoiceOver support. Kara uses it. Now you can too.
Screenshots
Verdict
The clearest difference is price: TachyMon at Free against KiT's $2.99. TachyMon also leads on ratings volume (288 vs 1) and iOS requirement (16.4 vs 26.5). KiT's advantage is rating (5.0 vs 3.8) and in-app purchases (none vs 2). On ads 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
TachyMon is free to download; KiT costs $2.99 up front. TachyMon sells 2 in-app purchases, starting at $2.99 per month. KiT asks for nothing beyond the download.
KiT holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: TachyMon has 288 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | TachyMon | KiT |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 3.8 (288 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 58.0% of reviews | — |
| Number of ratings | 288 — better | 1 |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 16.4 — better | 26.5 |
| Further details — not scored | ||
| Size | 36 MB | 1 MB |
| Age rating | 9+ | 4+ |
| Developer | Whip Development Inc. | Karl Mcclendon |
Bugs and requests
TachyMon
Reported bugs
4 issues- 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
5 requests- 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
KiT
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TachyMon
- TachyMon Premium Monthly1 Month trial$2.991 Month
- TachyMon Premium Annual1 Month trial$19.991 Year
KiT
No in-app purchases









