Comparison

Fluidity vs RunPace

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

Head to head
About

Fluidity

Features
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Train your brain with Fluidity — a comprehensive cognitive training app featuring 34 scientifically-designed games across 9 categories. Whether you're looking to sharpen your memory, boost your focus, or explore your creative potential, Fluidity adapts to your skill level and grows with you. BRAIN TRAINING CATEGORIES • Memory — Strengthen recall and associative memory • Attention — Sharpen focus and response control • Flexibility — Adapt to changing rules and demands • Language — Boost word retrieval and comprehension • Creativity — Explore divergent thinking and imagination • Emotional Intelligence — Read and respond to social cues • Navigation — Enhance spatial reasoning and mental mapping • Coordination — Improve reaction time and multitasking • Everyday Math — Build mental arithmetic and estimation skills KEY FEATURES • 34 unique brain training games with adaptive difficulty that adjusts to your performance in real time • AI-powered personal coaching that creates custom training plans based on your cognitive strengths and weaknesses • Brain age estimation that tracks your cognitive fitness over time • Detailed progress analytics with radar charts showing performance across all cognitive domains • Achievement system with 37 achievements to unlock • Daily streak tracking to build consistent training habits • Share cards to show off your scores and challenge friends • Cloud sync to seamlessly continue your training across devices ACCESSIBILITY FIRST Fluidity is designed to be inclusive and accessible to everyone: • Multiple colorblind modes (Protanopia, Deuteranopia, Tritanopia) • Dyslexia-friendly font option • High contrast mode • Adjustable game speed (0.5x to 3x) • Reduced motion option • One-handed play support • Clinical onboarding for rehabilitation use FREE VS PREMIUM Play 3 free games every day with access to all 34 brain games, adaptive difficulty, and basic progress tracking. No account required. Upgrade to Fluidity Premium for the complete experience: • Unlimited daily games • AI-powered personal coaching • Brain age tracking • Detailed progress analytics and cognitive radar charts • Full achievement system • Personalized training workouts • Clinical onboarding profile • Streak tracking • Cloud sync across devices SUBSCRIPTION OPTIONS • Monthly: $4.99/month • Lifetime: $99.99 one-time purchase SUBSCRIPTION TERMS • Payment is charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period • Your account will be charged for renewal within 24 hours prior to the end of the current period • You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription HEALTH DISCLAIMER Fluidity is not a medical device. Brain age estimates and cognitive scores are for motivational and entertainment purposes only and are not clinical assessments. Consult a healthcare provider before using Fluidity for rehabilitation purposes. Privacy Policy: https://fluiditybrain.com/privacy Terms of Service: https://fluiditybrain.com/terms

About

RunPace

Features
Read full description

RunPace is a clean, fast pace calculator for runners who like clear numbers without the clutter. Whether you're chasing a 5K PR or pacing your first marathon, RunPace gives you the splits, predictions, and training paces you need — in seconds. CALCULATOR (free) • Switch instantly between pace (min/km) and speed (km/h) • See finish times for every common distance, or full split tables RACE PLAN (free) • Set a target finish time and distance, get the exact pace you need • Even-paced split tables so you know your checkpoints RACE TIMES (RunPace Pro) • Enter one race result and predict your times across distances • Based on Riegel's proven formula • Or seed a starting point from your Apple Health VO₂max TRAINING PACES (RunPace Pro) • VDOT-based training paces — Easy, Marathon, Threshold, Interval, Repetition • Import your VO₂max (Cardio Fitness) from Apple Health to set zones automatically • Watch your VO₂max move: a 12-month trend line with the change over the period MADE FOR RUNNERS • Kilometres or miles — switch once and the whole app follows: min/mi and mph wheels, mile splits, and a US race ladder (1 mile, 5K, 10K, 10 miles, half, marathon) • Light, dark, or system appearance • English and Norwegian • No ads, no account, no tracking — your runs and numbers stay on your device RUNPACE PRO Calculator, Race Plan and Settings are free to use, with no ads and no time limit. RunPace Pro unlocks Race Times and Training Paces — one purchase, no subscription, on every device you use with the same Apple Account. Built by a runner, for runners. Lace up and find your pace.

Screenshots

Fluidity4 screens
RunPace4 screens

Verdict

The call

The clearest difference is in-app purchases: RunPace at none against Fluidity's 2. RunPace also leads on update cadence (every 2 days vs every 4 months). On price, ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fluidity sells 2 in-app purchases, starting at $4.99 per month. RunPace asks for nothing beyond the download.

UpkeepUpdate frequency

Fluidity ships an update every 4 months, RunPace every 2 days. Both last shipped on October 7, 2026.

Scorecard2 real differences · 4 level
Fluidity versus RunPace: the parameters behind the verdict, then further details
ParameterFluidityRunPace
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size28 MB1 MB
Age rating12+4+
DeveloperAdam OttSTIAN GAARE VAAGAN

In-app purchases

2 purchases

Fluidity

Subscriptions1
  • Fluidity Premium$4.991 Month
One-time1
  • Fluidity Premium Lifetime$99.99
None

RunPace

No in-app purchases

Questions

Is Fluidity free?
Fluidity is free to download, with in-app purchases available.
Is RunPace free?
RunPace is free to download, with no in-app purchases.
Do Fluidity or RunPace have ads?
Neither Fluidity nor RunPace shows ads.
Which is updated more often, Fluidity or RunPace?
Fluidity ships an update every 4 months, and RunPace every 2 days. Most recently, Fluidity was updated on October 7, 2026 and RunPace on October 7, 2026.

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