Comparison

SlowFlow vs Reaction Light Trainer

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

Head to head
About

SlowFlow

Features
Read full description

SlowFlow is your calm, private breathing companion. Slow down, breathe better, and build a simple daily practice with guided sessions inspired by the Buteyko method and by LΓ©on Guillarme's resisted-exhalation approach. WHY SLOWFLOW β€’ Guided sessions with clear inhale / hold / exhale cues, gentle haptics and optional sounds. β€’ Quick situational protocols for the moments that matter: calm down, sharpen focus, wind down before sleep, ease tension, unblock your nose, and classic box breathing 4-4-4-4. β€’ Control Pause (CP) test to measure and follow your progress over time on a simple chart. β€’ Built-in presets plus your own custom routines β€” choose phases, holds, cycles and reminders. β€’ Profiles for the whole family, each with its own history and settings. PRIVATE BY DESIGN β€’ Works fully offline. No account, no login, no sign-up. β€’ Your data stays on your device. No analytics, no tracking β€” nothing is sold or shared. MADE TO FEEL CALM β€’ Light and dark themes, large touch targets, readable typography and screen-reader support. β€’ Available in 8 languages: English, Polish, German, French, Spanish, Italian, Portuguese and Chinese. A FEW MINUTES A DAY Whether you want to start the morning grounded, reset after a stressful moment, or drift off more easily at night, SlowFlow gives you a gentle, structured way to come back to your breath. SlowFlow is a wellness and relaxation tool to support a calmer breathing practice. It is not a medical device and does not diagnose, treat or cure any condition. Breathing exercises are not suitable for everyone β€” if you are pregnant or have a medical condition, please talk to a healthcare professional first.

About

Reaction Light Trainer

Features
Read full description

Reaction Light Trainer turns the phones you already own into a full reaction-light system β€” the kind of setup coaches pay hundreds for, free. Lights flash in random, unpredictable colors and positions; you react and hit them as fast as you can. Because the cue is unplanned, you train true REACTIVE agility, reaction time, reflexes and hand-eye coordination β€” not a memorized pattern. That's the difference between reaction lights and cones or ladders, and why athletes use them. KEY FEATURES - Multi-device stations: link several phones (and Apple Watch) over Wi-Fi and spread them out as reaction pods β€” build lines, boxes, arcs and circuits for a whole squad. Any device hosts and starts. - Solo drills on a single phone: 30s challenge, multi-light, color go/no-go, footwork. - Go / no-go: tap only the right color to train decision speed and impulse control. - Adaptive difficulty: the deadline tightens as you get faster, keeping you at your limit. - Rounds & rest, like real interval / SAQ training. - Live stats & competition: reaction time, hits, misses, accuracy, fastest/average, per-player results and head-to-head racing. BUILT FOR - Speed, agility & quickness (SAQ), reactive agility, change of direction - Soccer & goalkeepers, basketball, tennis, badminton, table tennis, hockey, volleyball - Boxing, MMA & martial arts β€” hand speed and defensive reflexes - Rehab & return-to-play, balance, proprioception and sports vision - Team & youth coaching, PE classes, group fitness, and cognitive / brain training A flexible, affordable alternative to expensive reaction-light pods β€” using the devices you already have. Free to download. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://scoreboard.100for1.com/reactionlight/privacy/

Screenshots

SlowFlow4 screens
Reaction Light Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: SlowFlow at none against Reaction Light Trainer's 2. SlowFlow also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Reaction Light Trainer sells 2 in-app purchases, starting at $2.99 per year. SlowFlow asks for nothing beyond the download.

Scorecard3 real differences Β· 3 level
SlowFlow versus Reaction Light Trainer: the parameters behind the verdict, then further details
ParameterSlowFlowReaction Light Trainer
PriceFreeFree
Update frequencyβ€”Every 2 weeks
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch β€” better
Requires iOS13.0 β€” better15.0
Further details β€” not scored
Size23 MB46 MB
Age rating4+4+
DeveloperSzewczyk IT Sp. z o.o.zhenyu song

In-app purchases

None

SlowFlow

No in-app purchases

2 purchases

Reaction Light Trainer

Subscriptions1
  • Remove Ads (Yearly)$2.991 Year
One-time1
  • Remove Ads$6.99

Questions

Is SlowFlow free?
SlowFlow is free to download, with no in-app purchases.
Is Reaction Light Trainer free?
Reaction Light Trainer is free to download, with in-app purchases available.
Do SlowFlow or Reaction Light Trainer have ads?
Reaction Light Trainer shows ads; SlowFlow does not.

Other comparisons