Comparison

interval timer hiit or running vs FlexDay

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

Head to head
About

interval timer hiit or running

This interval timer app helps you set up HIIT, workout, or running sessions quickly. Customize workout and rest times, with visual cues and optional sound/vibration alerts. It works in the background, allowing you to use other apps simultaneously.

Highlights
  • Customizable interval timers
  • Visual phase indicators
  • Sound and vibration alerts
  • Background operation
  • Minimalist user interface
  • Supports Apple Watch
Features
Read full description

Here's your new interval timer apple watch for hiit, workout, running session etc... Set up your training session in a few seconds. Select the number of sets (cycles), the workout time, and the rest time, and let's go! Colorful backgrounds indicate the current phase of the workout. The minimalist design makes the app user-friendly, and easy to read at a glance. Sounds and vibrations can be activated/deactivated to indicate phase transitions. You can customize the settings (sounds, vibrations, colors, etc...). The app is working in the background so you can use it with other apps if you wish. No more excuses to miss a workout or training now!

About

FlexDay

This app offers guided stretching routines for various needs, from morning energizers to post-workout recovery. It features over 70 exercises, smart scheduling, progress tracking, and Apple Health integration. Stretch anywhere, anytime, with offline access.

Highlights
  • 70+ stretching exercises
  • Guided routines with visual instructions
  • Smart calendar scheduling
  • Progress tracking and milestones
  • Apple Health integration
  • Offline access
Features
Read full description

Discover the Power of Daily Stretching with FlexDay Transform your body and mind with FlexDay, the comprehensive stretching app designed for modern lifestyles. Whether you're an office worker battling desk tension, an athlete seeking peak performance, or simply someone wanting to feel better every day, FlexDay makes flexibility training accessible, enjoyable, and effective. Perfect for Every Moment * Morning Routines - Start your day energised and aligned * Office Stretches - Combat desk posture and tension during work breaks * Evening Wind-Down - Release stress and prepare for restful sleep * Post-Workout Recovery - Enhance your fitness routine with proper cooldowns * Quick 5-minute sessions when time is tight Features That Set Us Apart 70+ professionally designed stretching exercises targeting every body area Guided routines with visual instructions and breathing patterns Smart calendar scheduling – Plan and receive reminders for your stretch sessions Smart timer with automatic position switches for balanced stretching Progress tracking with analytics and achievement milestones Apple Health integration to contribute to your Activity Rings Offline access - stretch anywhere, anytime Targeted Body Areas Focus on exactly what you need: neck, shoulders, back, chest, arms, core, hips, legs, or complete full-body sessions. Each exercise includes detailed instructions, pro tips, and breathing guidance to maximise effectiveness. Track Your Journey Watch your flexibility improve with comprehensive progress tracking. Monitor completed routines, total stretching time, and weekly consistency. Celebrate milestones and build lasting healthy habits. Why Users Love FlexDay "Finally, an app that makes stretching simple and effective!" "Perfect for my busy schedule - quick office breaks that actually work." "The routine variety keeps me motivated and engaged." Start your flexibility journey today. Your body will thank you tomorrow. Download FlexDay and stretch into a healthier, more flexible you! Terms of Use: https://flexday-landing.vercel.app/terms-of-service Privacy Policy: https://flexday-landing.vercel.app/privacy-policy

Screenshots

interval timer hiit or running3 screens
FlexDay4 screens

Verdict

The call

The clearest difference is price: FlexDay at Free against interval timer hiit or running's $0.99. interval timer hiit or running's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 18.6). On 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

FlexDay is free to download; interval timer hiit or running costs $0.99 up front. FlexDay sells 1 in-app purchase, starting at $14.99 per year. interval timer hiit or running asks for nothing beyond the download.

UpkeepUpdate frequency

interval timer hiit or running ships an update every 3 weeks, FlexDay every 5 weeks. The most recent releases landed on September 17, 2026 and September 2, 2026 respectively.

Scorecard4 real differences · 6 level
interval timer hiit or running versus FlexDay: the parameters behind the verdict, then further details
Parameterinterval timer hiit or runningFlexDay
Price$0.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better18.6
Further details — not scored
Size1 MB564 MB
Age rating4+12+
DeveloperSylvain HuonOnlyAI Ltd

Customer experience

interval timer hiit or running

Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

FlexDay

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

interval timer hiit or running

No in-app purchases

1 purchases

FlexDay

Subscriptions1
  • FlexDay Premium$14.991 Year

Questions

Is interval timer hiit or running free?
interval timer hiit or running costs $0.99, with no in-app purchases.
Is FlexDay free?
FlexDay is free to download, with in-app purchases available.
Do interval timer hiit or running or FlexDay have ads?
Neither interval timer hiit or running nor FlexDay shows ads.
Which is updated more often, interval timer hiit or running or FlexDay?
interval timer hiit or running ships an update every 3 weeks, and FlexDay every 5 weeks. Most recently, interval timer hiit or running was updated on September 17, 2026 and FlexDay on September 2, 2026.

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