Addy Fit vs RHRSpark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Addy Fit
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Addy is your fitness and nutrition consistency companion. Pick a program, follow today's training set, fuel up, and build a streak you actually want to keep. No account. No onboarding. Open the app and you're home. PROGRAMS & FUEL PACKS Choose a workout "Pack" and a nutrition "Fuel Pack." Your Home screen shows today's training set and meals for the pack you picked, themed for workout days and recovery days. TODAY'S SET See exactly what to do today - every exercise with a clear demo and a one-tap complete control. Open the full-screen view when you're training. PROTEIN & WATER Track protein and water against your daily goals with a single tap, and keep your momentum when you cross the line. STREAKS & PROGRESS Build a streak for showing up, and watch your weekly progress come together on the Addy dashboard. SMART REMINDERS Optional, on-device reminders nudge you toward today's workout and your protein and water goals. Addy works fine without them. BUILD & SHARE YOUR OWN Create your own programs and diets and share them with a public or private link. Import packs other people share, and report or block anything you don't want to see. APPLE WATCH & WIDGETS Check today's set and your trackers from your wrist, and keep your streak on your home screen. APPLE HEALTH (OPTIONAL) If you allow it, Addy can read your Steps and Active Energy to show them on your dashboard. It's optional, read-only, and your health data stays on your device. Addy works fully without Health access. FREE Addy is free - no subscriptions, no paywall, no ads. Addy is built to help you stay consistent. It is not a medical, dietary, or training service and does not replace a doctor, dietitian, or personal trainer.
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 your resting heart rate on your Apple Watch face as a sparkline, a gauge, or a corner complication. WHAT YOU GET • Three free 24-hour complications: a sparkline, a gauge, and a corner • Seven Pro complications across 8-hour, 7-day, and 30-day windows • Recent sedentary heart rate and Apple's daily resting heart rate, each labeled • Calculation notes for every complication in the iPhone gallery TWO 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. When there is no recent sedentary sample, the big number shows Apple's latest resting heart rate and says so. Longer gaps stay visible instead of being filled in. BUILT FOR THE WATCH FACE Choose rectangular, circular, or corner complications. A short HR or RHR label tells you which source you are seeing and leaves the sparkline the room. The Apple Watch app works without the iPhone app and keeps a record of your daily values. The iPhone app adds older days whenever you open it. ONE-TIME PRO UNLOCK Download free and use the three 24-hour complications. Unlock all ten with a single one-time purchase. 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 iPhone and Apple Watch through Apple frameworks. RHRSpark may request a small configuration file from filamentlabs.io to show current product messages. That request contains no health 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: Addy Fit at none against RHRSpark's 2. On price, ads, device support and iOS requirement 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. Addy Fit asks for nothing beyond the download.
| Parameter | Addy Fit | RHRSpark |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Weekly |
| 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 | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitry Prozorovskyi | Joel Farthing |
In-app purchases
Addy Fit
No in-app purchases
RHRSpark
- RHRSpark Pro$0.99
- Tip Jar$2.99









