Heart Spin vs Compound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Heart Spin
Easily browse and purchase class packs or membership options. View the schedule, filter classes by type, and manage your reservations to stay organized and committed to your fitness goals.
- Purchase class packs and memberships
- Browse class schedule
- Filter classes by type
- Manage class reservations
- Stay organized with fitness goals
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Features: -Purchase Class Packs and Memberships Easily browse and purchase our class packs or membership options -View our schedule Filter classes by type to find the perfect fit for your routine. -Manage your reservations Book your class reservations with ease. Keep track of your upcoming classes and manage your schedule to stay organized and committed to your fitness goals.
Compound
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Progress compounds. Compound is the simplest way to see your body change. Take one photo a day. Prop your phone up, set the 3, 5 or 10-second timer, and step into place. A ghost of yesterday's photo and a body outline help you line up in the same spot, so every shot is consistent. Check your front photo up close, retake it as often as you like, then add an optional side photo. Every month, a new before-and-after unlocks. Drag the slider to compare Day 1 with today, front and side. Every three months you earn a trophy. Share a split-screen image or a timelapse of your whole journey, only when you choose to. PRIVATE BY DESIGN • No account, no sign-up • Your photos never leave your phone and never appear in your camera roll • No ads, no analytics, no tracking • Optional Face ID lock • Export every photo or delete everything, anytime Terms of Use: https://compound-progress.vercel.app/terms Privacy Policy: https://compound-progress.vercel.app/privacy Compound shows photos; it isn't medical advice. Talk to a professional before changing your diet or training.
Screenshots
Verdict
Heart Spin and Compound are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Heart Spin | Compound |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 38 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | HEART SPIN INC | Taylor Brown |
In-app purchases
Heart Spin
No in-app purchases
Compound
No in-app purchases









