Workout Data vs FerroVox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Workout Data
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Workout Data is an app that allows you to view time in heart rate zones, total distance and total time for your workouts that sync with the Apple Workout and Health Apps. You can select to view this data by month, week or day and filter by specific activity types and date ranges.
FerroVox
Log your workouts using your voice with this private, on-device tracker. Customize your gym, track every machine variation, and visualize your training with a muscle group heat map. Includes a plate math calculator and Apple Watch integration for hands-free logging.
- Voice logging
- Custom gyms
- Muscle group heat map
- Plate math calculator
- Apple Watch companion
- Data export
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Last set hit you like a stun grenade? • Voice Logging. Offline, on-device, private. Member of multiple gyms with different equipment? • Custom Gyms with your specific bars, racks, and machines. Different machines and variations getting lumped together? • Track every machine and variation separately. Each variation has significant differences. Ensure progressive overload. Not sure what to add or cut from your split? • Muscle Group Heat Map. See what's overworked and what's neglected. Need to know what weight to load next? • Quick set history on every exercise. Don't like doing math in public? • Plate Math Calculator. Tells you what to grab. Want a hands-free lift tracker? • Apple Watch companion. Voice or quick-tap from your wrist. We cover the basics too: • Workout routines • Drop set logging • Timed exercise logging (planks, dead hangs, stretches) • Share gyms with other lifters • iCloud backup, 100% private to you • "Big Three" tracking (Squat, Bench, Deadlift) • Consistency heat map with opacity tied to volume lifted that day • Data export so you can share with your trainer or analyze on your own • Estimated 1RM with progression charts • Personal record detection • Rest timer with configurable defaults • Dynamic Island integration during workouts • 80+ built-in exercises with fuzzy matching • Manual entry with gym-aware exercise picker • Light and dark mode • Left-handed mode • Home screen widget One price. $14.99. No subscriptions, no monthly fees. You keep it forever.
Screenshots
Verdict
The clearest difference is in-app purchases: Workout Data at none against FerroVox's 1. Workout Data also leads on device support (3 vs 1). FerroVox's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads 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. FerroVox sells 1 one-off in-app purchase. Workout Data asks for nothing beyond the download.
Workout Data ships an update every 3 months, FerroVox every 3 weeks. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.
| Parameter | Workout Data | FerroVox |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Paid |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Piryon Enterprises LLC | Thomas Hoffman |
In-app purchases
Workout Data
No in-app purchases
FerroVox
- Unlock FerroVox$14.99









