Comparison

FLOWBIO vs Threkka

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

Head to head
About

FLOWBIO

This app analyzes sweat data to provide personalized hydration and recovery strategies for athletes. It connects to a sweat sensor to track fluid and sodium loss, offering tailored plans and pre-session predictions to optimize performance.

Highlights
  • Personalized hydration strategies
  • Tailored recovery plans
  • Pre-session performance predictions
  • Intake logging
  • Support for electrolyte brands
  • Integrations with Garmin, Wahoo, Zwift, Coros
Features
Read full description

Dehydration, cramps, poor recovery? Most athletes face these problems because they don’t know what they’re really losing in sweat. The FLOWBIO System solves this. By pairing the world’s most accurate sweat sensor with the FLOWBIO App, you can finally connect sweat data to your performance, recovery, and progress. FLOWBIO Sensor: Measures your sweat in real time with lab-grade accuracy, tracking your unique fluid and sodium losses in every run, ride, and race. FLOWBIO App - Transforms your sweat data into simple, personalised hydration strategies. - Tailored recovery plans built from your actual losses. - Pre-session predictions so you start properly prepared. - Intake logging and support for your preferred electrolyte brands. Integrations: - Garmin - Wahoo - Zwift - Coros

About

Threkka

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Exercise Your Demons in Threkka — Where Real-world Fitness Meets Otherworld Fantasy *BEFORE WE BEGIN* Threkka is designed to integrate with Apple Health and HealthKit, technologies developed by Apple that have been a standard feature in iOS since iOS 8. Threkka reads workout data saved into HealthKit by other apps and wearable devices. Threkka does not track activity by itself. If you are not already comfortable with using other apps and wearables to log your movement and exercise data into HealthKit, then please do not download Threkka until you are – as Threkka won't be able to do what Threkka is designed to do. Cool? --- Welcome to Liminalia, a sideways realm where a crackpot crew of misunderstood misfits want to build themselves better lives, and where every workout you log over in this world impacts their reality over there. In Threkka, you're not just playing a game; you're embarking on a personal journey of growth and resilience. Visit the mystical Gym Between and transform it from a forgotten ruin into the pinnacle of mystical and physical training. HARD PLAY PAYS OFF Build and Customise: Plunge into the fitness multiverse to rebuild and revitalise the Gym Between, a once-celebrated health-and-fitness hotspot in the parallel realm of Liminalia. As you progress, expand its facilities, beat workout challenges, and unlock enchanting new fitness equipment that blends magic with muscle. Earn Sweat: To train your Champs in the Gym Between, you need Sweat. The only way to get Sweat? Bring your Liminalian buddies over to the real world, and take them along as you work out. Could be a run, a gym sesh, pilates, even a fellow fitness game; we don't care HOW you move. We just care THAT you move. Grow with the Champs: Each Champ – a misunderstood baddie from mythology or pop culture – needs your help to overcome personal challenges. Train with characters like Humbert the thespian Minotaur, Kaiya the cursed-not-cursed Yurei, and Wally the wannabe-influencer Windigo. Watch as they grow stronger and conquer their fears. And who knows? As you cement healthy new exercise habits, something similar might happen for you, too. Discover the Spirit of Þrekka: based on the old Norse word 'þrek' – pronounced 'threk', and meaning 'stamina' or 'endurance' – the Spirit of Þrekka is all about keeping on keeping on. We've designed Threkka to help you find your own þrekka, and to benefit from forging lifelong healthy habits! MADE WITH LOVE Fitness Gaming Done Properly: this sits above any other fitness apps, routines, and personal trainers you might be using, to give you a reason to go again, tomorrow. It's not limited to only running or only boxing. We just want you to move. Powered By fitOS: you're controlling a parallel-universe version of you, on your actual real iPhone. And your other you also has their own mobile, running fitOS. Use it to get stats on your Champs, track Gophers, even make inter-dimensional PhaseTime calls. Dragon Drop: as a human that's found unexpectedly found themselves somewhere in the fitness multiverse, you bring with you the legendary power of Dragon Drop. Sounds a bit like 'drag and drop', no? That's because the whole way you interface with Threkka is based on tapping, swiping, and dragging and dropping things on top (or off) of other things. We hope you'll find it as intuitive as it is powerful. Not Magic Pixie Moomooland: turns out that humans really do mess with Unicorn GPS. And someone's not very happy about it! THREKKA AND YOU Threkka is committed to privacy and data security. All we do is read your HealthKit data – itself created by other apps – for use in the game. We don't – won't ever – harvest it, sell it, or use it for anything other than your benefit.

Screenshots

FLOWBIO4 screens
Threkka4 screens

Verdict

The call

The clearest difference is in-app purchases: FLOWBIO at none against Threkka's 8. Threkka's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, 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. Threkka sells 8 one-off in-app purchases. FLOWBIO asks for nothing beyond the download.

UpkeepUpdate frequency

FLOWBIO ships an update fortnightly, Threkka every 9 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
FLOWBIO versus Threkka: the parameters behind the verdict, then further details
ParameterFLOWBIOThrekka
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size37 MB470 MB
Age rating17+4+
DeveloperFLOWBIO LTDChock Hoss Ltd

In-app purchases

None

FLOWBIO

No in-app purchases

8 purchases

Threkka

One-time8
  • Handful of Muxels$0.49
  • Pile of Muxels$0.99
  • Sack of Muxels$1.99
Show 5 more
  • Box of Muxels$3.99
  • Crate of Muxels$6.99
  • Barrel of Muxels$11.99
  • Chest of Muxels$24.99
  • Safe of Muxels$49.99

Questions

Is FLOWBIO free?
FLOWBIO is free to download, with no in-app purchases.
Is Threkka free?
Threkka is free to download, with in-app purchases available.
Do FLOWBIO or Threkka have ads?
Neither FLOWBIO nor Threkka shows ads.
Which is updated more often, FLOWBIO or Threkka?
FLOWBIO ships an update fortnightly, and Threkka every 9 days. Most recently, FLOWBIO was updated on October 5, 2026 and Threkka on October 10, 2026.

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