Comparison

00 vs Hybrid Flow

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Customizable exercise display
  • Metronome and reminder setup
  • Exercise tagging and notes
  • Create sets and routines
  • Save and track session progress
Read full description

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'.

About

Hybrid Flow

Features
Read full description

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

004 screens
Hybrid Flow4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

00 ships an update daily, Hybrid Flow every 5 weeks. The most recent releases landed on November 2, 2026 and November 12, 2026 respectively.

Scorecard3 real differences · 6 level
00 versus Hybrid Flow: the parameters behind the verdict, then further details
Parameter00Hybrid Flow
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyDaily — betterEvery 5 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS10.0 — better17.0
Further details — not scored
Size28 MB12 MB
Age rating4+4+
DeveloperAdriaan de JonghPedro Marin

In-app purchases

None

00

No in-app purchases

3 purchases

Hybrid Flow

Subscriptions2
  • Monthly Subscription$3.991 Month
  • Annual Subscription7 Days trial$24.991 Year
One-time1
  • Lifetime Full Access$69.99

Questions

Is 00 free?
00 is free to download, with no in-app purchases.
Is Hybrid Flow free?
Hybrid Flow is free to download, with in-app purchases available.
Do 00 or Hybrid Flow have ads?
Neither 00 nor Hybrid Flow shows ads.
Which is updated more often, 00 or Hybrid Flow?
00 ships an update daily, and Hybrid Flow every 5 weeks. Most recently, 00 was updated on November 2, 2026 and Hybrid Flow on November 12, 2026.

Other comparisons