Ksteps vs RHRSpark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ksteps
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Ksteps is an app that helps you quickly check your step count directly from your Apple Watch face. With complications, you can instantly view today’s steps on your watch face, and the app supports a variety of complication styles. Add it easily without complicated setup and keep track of your daily activity at a glance. Key Features • Apple Watch complication support • Quickly check your step count from the watch face • Various complication styles available • Simple setup and intuitive usage How to Use Install Ksteps on your Apple Watch. Press and hold the watch face to open the edit screen. Select Ksteps when adding a complication.
RHRSpark
Visualize your resting heart rate directly on your Apple Watch face with customizable complications. Choose from various styles and time windows to see your heart rate trends at a glance. Understand how your data is calculated with full transparency.
- Resting heart rate on watch face
- Sparkline, gauge, or corner complications
- 10 watch face complications
- 4 time window options (8H, 24H, 7D, 30D)
- Two distinct data sources
- Full calculation transparency
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RHRSpark puts resting heart rate on your Apple Watch face as a sparkline, gauge, or corner complication. WHAT YOU GET • Three 24-hour complications you can use for free • 10 complications across 8-hour, 24-hour, 7-day, and 30-day windows with Pro • Short-term sedentary heart-rate samples and Apple's daily resting heart rate • Clear calculation notes for every complication TWO DATA SOURCES, SHOWN CLEARLY The 8-hour and 24-hour views use heart-rate samples that HealthKit labels as sedentary. The 7-day and 30-day views use Apple's daily resting heart-rate values. Gaps stay visible when there is no qualifying sample. BUILT FOR THE WATCH FACE Choose rectangular, circular, or corner complications. Each one keeps the source and time window clear so you know what you are viewing. ONE-TIME PRO UNLOCK Download free and use three 24-hour complications. Unlock all 10 complications for $0.99 once. No subscription, account, ads, or telemetry. PAIR IT WITH HRVSpark HRVSpark gives the same direct view of raw SDNN heart rate variability across useful time windows. HealthKit data stays on your devices and moves only between your paired iPhone and Apple Watch through Apple frameworks. RHRSpark may request a small configuration file from filamentlabs.io to display current product messages. The request contains no HealthKit data. RHRSpark is for informational purposes only. It does not provide medical advice or diagnose, treat, cure, or prevent any medical condition.
Screenshots
Verdict
The clearest difference is in-app purchases: Ksteps at none against RHRSpark's 2. RHRSpark's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, 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
Both are free to download. RHRSpark sells 2 one-off in-app purchases. Ksteps asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.
| Parameter | Ksteps | RHRSpark |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kiyeong Jeong | Joel Farthing |
In-app purchases
Ksteps
No in-app purchases
RHRSpark
- RHRSpark Pro$0.99
- Tip Jar$4.99









