Comparison

OpenHIIT vs CrispyCore

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

Head to head
About

OpenHIIT

This open-source interval timer app helps optimize various activities like workouts, work sprints, and study sessions. It offers customizable timing, precise controls, and clear auditory and visual alerts to keep you motivated and on track. Users can also join a collaborative community to contribute to its development.

Highlights
  • Customizable interval timing
  • Precise and user-friendly controls
  • Auditory and visual alerts
  • Open-source community collaboration
  • Ad-free experience
Features
Read full description

Enhance your daily routines with OpenHIIT, the versatile open-source interval timer app. Tailored for various activities, including but not limited to High-Intensity Interval Training (HIIT), OpenHIIT is a dynamic tool designed to optimize your tasks and foster a collaborative environment. OpenHIIT is free of ads and committed to providing an experience without in-app purchases or premium versions. Customizable Timing: Set intervals tailored to your preferences, whether it's for focused workouts, work sprints, or study sessions. Adapt OpenHIIT to your needs and make the most of your time. Precise Timing and User-Friendly Controls: Enjoy seamless sessions with accurate timing and intuitive controls. OpenHIIT ensures precision in intervals, allowing you to concentrate on your activities without disruptions. Stay in sync and maintain a steady pace throughout your tasks. Auditory and Visual Alerts: Stay informed and motivated with clear audio and visual alerts. OpenHIIT provides signals and indicators, keeping you aware of time changes without the need to glance at your device constantly. Keep your momentum going and stay on track. Open Source Collaboration: Join the collaborative spirit and become part of the OpenHIIT open-source community. Contribute to the app's development, suggest improvements, and share your ideas with users from various backgrounds. Together, we can shape the evolution of interval timers for diverse activities. Download OpenHIIT now to experience the flexibility and efficiency of an open-source interval timer. Take charge of your sessions, boost your productivity, and explore the full potential of OpenHIIT in various aspects of your daily life. Note: OpenHIIT is a project led by one individual with contributions from the community. Committed to quality and alignment with platform policies, OpenHIIT respects intellectual property rights.

About

CrispyCore

Features
Read full description

CrispyCore is a workout player and timer built for people who follow structured training programs. Whether you're doing strength training, calisthenics, mobility work, boxing conditioning, or any other structured sport. CrispyCore turns your program into a fully guided session. **GUIDED WORKOUT PLAYER** The interactive workout player walks you through every exercise, set, and rest period. Timers count down automatically, tempo cues keep your technique sharp, and RPE guidelines help you train at the right intensity. Enable Autoplay and the app handles every transition hands-free. **ANY PROGRAM, ANY SPORT** CrispyCore works with any training methodology. Follow straight sets, circuits, EMOMs, or accumulation blocks. Set reps, time targets, max-effort sets, or total rep targets. Add tempo, RPE, and failure protocols exactly as written in your program. **STRUCTURED PROGRESSIONS** Follow multi-phase programs with weekly schedules that move you forward automatically. CrispyCore tracks exactly where you are in your program and picks up where you left off, every session. **VOICE COACH** Real-time audio cues keep you focused without staring at your screen. The Voice Coach announces exercises, counts down rest timers, and calls out tempo beats so your attention stays on the movement. **APPLE HEALTH INTEGRATION** Every completed workout syncs automatically to Apple Health. Your training sits alongside your other fitness data for a complete picture of your activity. **IMPORT PROGRAMS FROM GITHUB** Host your own workout programs on GitHub and import them directly into the app. CrispyCore uses an open JSON format. Build any program structure, share it with others, and update it anytime. No middleman. **BEAUTIFUL, FOCUSED DESIGN** A clean interface built for the gym floor, readable at a glance, usable with sweaty hands. Choose a light or dark theme or follow your system settings automatically. **iCLOUD BACKUP** Your workout history and progress automatically sync to iCloud, keeping your data safe across devices.

Screenshots

OpenHIIT2 screens
CrispyCore4 screens

Verdict

The call

The clearest difference is device support: OpenHIIT at 3 against CrispyCore's 1. OpenHIIT also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OpenHIIT ships an update monthly, CrispyCore every 2 weeks. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
OpenHIIT versus CrispyCore: the parameters behind the verdict, then further details
ParameterOpenHIITCrispyCore
PriceFreeFree
Rating5.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size26 MB6 MB
Age rating4+4+
DeveloperAbigail MabeQuentin Decosne

In-app purchases

None

OpenHIIT

No in-app purchases

None

CrispyCore

No in-app purchases

Questions

Is OpenHIIT free?
OpenHIIT is free to download, with no in-app purchases.
Is CrispyCore free?
CrispyCore is free to download, with no in-app purchases.
Do OpenHIIT or CrispyCore have ads?
Neither OpenHIIT nor CrispyCore shows ads.
Which is updated more often, OpenHIIT or CrispyCore?
OpenHIIT ships an update monthly, and CrispyCore every 2 weeks. Most recently, OpenHIIT was updated on October 18, 2026 and CrispyCore on October 8, 2026.

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