00 vs Hybrid Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
00
This workout tool allows you to create custom exercise routines with timers, reminders, and notes. Track your progress by saving sessions and viewing your improvements over time. It's a free, personal project designed for users who know their own exercises.
- Customizable exercise display
- Metronome and reminder setup
- Exercise tagging and notes
- Create sets and routines
- Save and track session progress
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00:37 is a workout tool. important notes: - the app doesn't contain any exercises or routines. add and do exercises you know how to do properly. 00:37 does not replace a mentor or classes. - the app is a side project, mostly designed for personal use, made available for free. I may update it occasionally, but don't expect regular updates or convenient features. I may also remove features that don't work for me or change things in ways you may not like; that's part of the deal here. features: - 5 types of exercises display time, repetitions, or amounts in different ways. - add a metronome, setup time, reminder sounds, tags, and notes to your exercises. - create sets and routines of exercises. - save your sessions so you can see how you progress. tip: - you are less likely to miss a timer, break, or reminder by going to Settings > Notifications > 00:37 and setting the notification style to 'Persistent'.
Hybrid Flow
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Hybrid Flow is the training app for HYROX and hybrid athletes who want to control their rhythm, not just their time. TRAIN WITH A METRONOME Build sessions with runs, ergs, wall balls, sleds and rests, and give each block its own cadence. The metronome and voice cues keep you on pace, even with the screen locked. Or start from the HYROX templates — full simulation, compromised running, sleds, ergs and wall balls — with the official weights for your division. FIND YOUR OPTIMAL CADENCE The cadence test runs stages of rising or falling cadence at a constant effort while it records your heart rate. Hybrid Flow finds the cadence where your heart works least, the optimal zone around it and your cardiac drift, and sets it as your metronome with one tap. MEASURE YOUR CADENCE BY TAPPING Tap along to any movement to get its BPM and how consistent you are. SEE WHERE YOU LOSE PACE Every result shows the time of each block and round, the drop-off from the first round to the last, the comparison with your previous run, your personal records and your heart rate per block. APPLE WATCH Train from your wrist with the metronome, the countdown and a big live heart rate. Results reach your iPhone on their own. Or keep the iPhone as your screen and get heart rate from your Apple Watch or a Bluetooth chest strap. ON ALL YOUR DEVICES Sessions, results, analyses and tests sync with iCloud across your iPhone and iPad, and workouts are saved in Apple Health. FREE AND PRO Free: unlimited cadence analyses, 1 saved session and 30 days of history. Hybrid Flow Pro unlocks unlimited sessions and every HYROX template, your full history, drop-off and comparisons, live heart rate, the cadence test and the Apple Watch app. Choose monthly, annual (with a one-week free trial) or lifetime. Terms of use: https://hybridflowapp.com/terms.html Privacy policy: https://hybridflowapp.com/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: 00 at none against Hybrid Flow's 3. 00 also leads on update cadence (daily vs every 5 weeks) and iOS requirement (10.0 vs 17.0). On price, 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. Hybrid Flow sells 3 in-app purchases, starting at $3.99 per month. 00 asks for nothing beyond the download.
00 ships an update daily, Hybrid Flow every 5 weeks. The most recent releases landed on November 2, 2026 and November 12, 2026 respectively.
| Parameter | 00 | Hybrid Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Daily — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Adriaan de Jongh | Pedro Marin |
In-app purchases
00
No in-app purchases
Hybrid Flow
- Monthly Subscription$3.991 Month
- Annual Subscription7 Days trial$24.991 Year
- Lifetime Full Access$69.99









