Forrest vs Interval Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Forrest
Turn your runs and cycling into exciting races against virtual opponents, your personal bests, or friends worldwide. Get real-time race insights and audio prompts to stay motivated. Review your performance with maps and graphs, and share your achievements.
- Race against virtual opponents (ghost racers)
- Compete against personal bests or previous races
- Challenge friends globally
- Real-time race position insights
- Audio prompts for race progress
- Export data to Strava or Apple Health
- Apple Watch compatibility
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Forrest is an innovative fitness tracking app designed for iOS users who want to add a fun and challenging twist to their running and cycling workouts. Forrest gives your usual workouts a new competitive dimension. Your runs and rides are no longer solitary endeavours, but exhilarating races against virtual opponents (ghost racers) or your personal bests and previous races. In the latest Version 2.0, we’ve amplified the excitement by enabling you to challenge your friends wherever they are in the world, infusing social connectivity into every stride. The purpose built race screen provides real-time insights into your position during the race, while audio prompts keep you focused on your goal even when your iPhone is locked, empowering you to fully embrace the race, whether you’re on foot or two wheels. It turns your runs and rides into races by giving you someone to compete against. Here's how it works: 1. Choose from a variety of preloaded race options or craft your own custom race event according to your preferences. 2. Add virtual opponents in the form of ghost-racers that'll run or ride at a speed you choose. 3. Add your personal best times or previous race results to race against yourself. 4. Add your friends. Take the challenge to the next level by racing against your friends wherever they are in the world. 5. Race! 6. Hear audio prompts on your race progress while you run or ride: • "You've overtaken your personal best to take 1st place." • "That's 30 minutes. You've completed 5.3km." • "Your target ghost racer is 12 seconds ahead of you in 2nd place." 7. Win! Get faster and fitter. 8. Review your race with maps, graphs, and export to Strava or Apple Health. 9. Share your achievements on social media with integrated social sharing. Forrest for Apple Watch gives you the freedom to race without your phone. Enjoy the same fun race experience from your wrist with live stats, race progress, and opponent times; hear the same audio prompts you’re used to hearing on iPhone; and listen to and control your favourite workout music. Unlock a host of exclusive features designed to amplify your workouts and enhance your overall experience with Forrest Pro: • Race against your friends — Embrace healthy competition by challenging your friends to races. Elevate your motivation and achieve more together. • Expand your competition — Engage in races with up to 10 opponents, allowing you to set higher goals and experience more exhilarating races. • Exclusive Pro profile badge — Stand out from the crowd with the exclusive Forrest Pro profile badge. Showcase your commitment to fitness and achievement. • Ad-Free racing — Enjoy an uninterrupted workout session with an advert-free experience throughout the Forrest app. Immerse yourself in your fitness goals without distractions. • Fresh app icons — Customise your app experience to match your personal preference with a collection of new and eye-catching home-screen app icons. Adding a touch of visual flair to your fitness journey. Forrest Pro is more than just a subscription; it’s a gateway to a more dynamic, engaging, and personalised fitness journey. Elevate your runs and rides, compete with friends, and reap the rewards of your hard work with Forrest Pro. Privacy Policy: https://forrest.app/privacy-policy Terms of Use: https://forrest.app/terms
Interval Flow
This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.
- Color-coded intervals
- Customizable circuits
- Real-time progress tracking
- Voice assist and search
- Exercise library
- Workout sharing
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Interval Flow: Experience a Workout Revolution Interval Flow is your ultimate fitness companion, designed to transform your workout experience with deep customization and advanced tracking. This versatile app is perfect for a wide range of activities including HIIT, TABATA, CrossFit, Yoga, Pilates, Meditation, and more. With Interval Flow, you can stay focused on your fitness goals while the app handles the details. Key Features: - Color-Coded Intervals: Customize your workout visually with color-coded intervals. Set distinct colors for warm-ups, high-intensity bursts, rest periods, and more, to easily navigate through your routine. - Exercise Library: Build your workouts with ease! Add new exercises or select from the existing ones to tailor your workout to your specific needs. - Real-Time Progress Tracking: Keep a live tab on your workout progress. The dynamic interval list updates in real-time, ensuring you know exactly where you are in your routine. - Customizable Circuits: Create the perfect workout sequence by arranging various exercises into repeatable circuits tailored to your fitness level and goals. - Personalized Interval Warnings: Get timely alerts before an interval ends. Customize the warning sounds to suit your style, ensuring smooth transitions without missing a beat. - Interactive Workflow: Enjoy crafting your workouts with a user-friendly interface that’s as intuitive as it is functional. Setting up your ideal workout regime is now as engaging as the workout itself. - Voice Assist: Let our advanced voice assist guide you through your exercises, announcing what’s next so you can remain focused on your form and intensity. - Voice Search: Quickly find your favorite workouts using voice commands, making your preparation seamless and hands-free. - AirShare: Share your custom workouts with friends or clients effortlessly using AirDrop, enhancing connectivity and interaction. Why Choose Interval Flow? With Interval Flow, you don't just exercise, you experience a revolution in workout efficiency and enjoyment. The app’s intuitive interface and comprehensive customization options make it the optimal companion for anyone serious about fitness. Whether you're powering through a high-intensity session or seeking tranquility in yoga, Interval Flow adapts to your pace and preference. Unlock your potential with Interval Flow – where your workout meets innovation. Interval Flow Subscription: The app includes a 1 month long auto-renewable subscription with a 3-day free trial, which will unlock premium features, like unlimited workouts, timer program editing and autoplay and costs $4.99/ month. It will be charged to your credit card through your iTunes account and will automatically renew unless you canceled at least 24 hours before the end of the current period. Any unused portion of a free trial period will be forfeited when you purchase the subscription. Though your subscription for the current month cannot be canceled, you can turn auto-renewal off in your account settings after purchase. See the instructions here: https://support.apple.com/en-us/HT202039 You can read the terms of use and privacy policy here: https://kapi90.github.io/hiit_timer_privacy_policy.html End User License Agreement (EULA) of the App Store applies: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is monetization model: Forrest at free with in-app purchases against Interval Flow's subscription. Forrest also leads on review sentiment (74% vs 48%) and iOS requirement (14.0 vs 18.6). Interval Flow's advantage is ads (none vs shown) and update cadence (fortnightly vs monthly). On price, rating, ratings volume 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
Both are free to download. Forrest sells 7 in-app purchases, starting at $1.99 per month and Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for Forrest against 4.7 for Interval Flow. Both are backed by a comparable volume of ratings — 230 and 167 respectively. Written reviews are what separate them: 74% of Forrest's written reviews are positive against 48% of Interval Flow's.
Forrest ships an update monthly, Interval Flow fortnightly. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | Forrest | Interval Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (230 ratings) | 4.7 (167 ratings) — better |
| Positive reviews | 74.1% of reviews — better | 48.1% of reviews |
| Number of ratings | 230 — better | 167 |
| Update frequency | Monthly | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 72 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Forrest & Sons Ltd | Bence Kaposzta |
Customer experience
Forrest
Interval Flow
User reviews
Forrest
From 230 App Store ratingsWhat we love
- 🤩 Highly motivating and encouraging
- 🏃♀️ Great for racing against yourself
- 🤝 Enables competition with friends
- 👍 Simple and easy to use interface
- ✨ Visually appealing design
Room to improve
- ❌ Account creation fails
- 🐛 App crashes frequently
- 💾 Runs cannot be saved
- ❓ Password recovery issues
- 🤥 Misleading 'free lifetime pro' claims
Interval Flow
From 167 App Store ratingsWhat we love
- 👍 Nicely designed with good features
- 👍 Unique and brilliantly for keeping fit
- 👍 Simplicity gets it done
Room to improve
- 🐛 App crashes on launch
- 🐛 App doesn't remember interval settings
- 🐛 App rearranges workout order
- 🐛 Cannot see questionnaire properly
- 🐛 Robot voice with no visual instructions
Bugs and requests
Forrest
Reported bugs
5 issues- Account creation error
- Frequent crashes
- Inability to save runs
- Password recovery email not sent
- Pro lifetime not unlockable
Requested features
5 requests- Translate to French
- Add heart rate on Watch
- Larger numbers on the first screen
- Support for other sports (inline skating, walking)
- Add more sports
Interval Flow
Reported bugs
10 issues- Programs deleted after update
- App crashes when adding a program
- Show/Hide Instructions adds time to interval
- App defaults to unused workout
- Cannot permanently skip to end of timed activity
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- Intervals revert to previous settings
- App won't remember order of custom circuit interval programs
- Blank screen after download
- Cannot get program to open
- Cannot see bottom of screen on questionnaire
Requested features
5 requests- Increase repetitions to 20
- Streamline adding intervals
- Make it possible to hide unused workouts
- Add music integration or option
- Provide visual instructions for moves
In-app purchases
Forrest
- Forrest Pro — Monthly14 Days trial$1.991 Month
- Forrest Pro — Monthly7 Days trial$3.991 Month
- Forrest Pro — Annual14 Days trial$19.991 Year
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- Forrest Pro Family — Annual14 Days trial$29.991 Year
- Forrest Pro — Annual7 Days trial$39.991 Year
- Forrest Pro Family — Annual7 Days trial$59.991 Year
- Forrest Pro Lifetime$99.99
Interval Flow
- 3 Month$4.993 Months
- 1 Month$9.991 Month
- 1 Month, 3 day trial3 Days trial$9.991 Month
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- Annual7 Days trial$14.991 Year
- 1 Year discounted$25.951 Year
- 1 Year, 3 day trial3 Days trial$39.991 Year
- 1 Year$39.991 Year
- 1 Year Intro month1 Month trial$39.991 Year
- Free Lifetime subscriptionFree
- Lifetime$24.99









