Perform Fitness vs KnowWhen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perform Fitness
This app provides personalized workout programs and tracks your progress, nutrition, and habits with the guidance of a coach. It offers exercise videos, community support, and integrates with various wearable devices and health apps.
- Access training plans and track workouts
- Follow exercise and workout videos
- Track meals and make better food choices
- Set health and fitness goals and track progress
- Message your coach in real-time
- Connect with digital communities
- Track body measurements and progress photos
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With the Perform Fitness App, you will have access to workout programs designed specifically to help you reach your fitness and health goals! You can follow & track your workouts, your nutrition, your lifestyle habits, measurements and results–all with the help of your own coach. FEATURES: - Access training plans and track workouts - Follow along to exercise and workout videos - Track your meals and make better food choices - Stay on top of your daily habits - Set health and fitness goals and track progress towards your goals - Gain milestone badges for achieving new personal bests and maintaining habit streaks - Message your coach in real-time - Be part of digital communities to meet people with similar health goals and stay motivated - Track body measurements and take progress photos - Get push notification reminders for scheduled workouts and activities - Connect your Apple Watch to track workouts, steps, habits, and more right from your wrist - Connect to other wearable devices and apps like the Apple Health App, Garmin, Fitbit, MyFitnessPal, and Withings devices to track workouts, sleep, nutrition, and body stats and composition Download the app today!
KnowWhen
This app offers simple, timely guidance for husbands based on their partner's cycle. It helps users understand when to offer support, listen, or give space, fostering better connection and reducing relationship tension.
- Daily simple guidance
- Phase-based reminders
- Private logging for patterns
- Discreet data storage on device
- Guidance on giving space
- Guidance on offering support
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100% FREE => Hey husbands—stop guessing. KnowWhen gives simple guidance based on her cycle so you can support her better, at the right time. Most relationship tension isn’t about effort. It’s about timing. KnowWhen helps you respond with more understanding—when to listen, when to give space, and when to lean in. What you’ll get: - Daily, simple guidance (not essays) - Phase-based reminders so you’re not guessing - Optional private logging to spot your own patterns over time - Built for discretion: your data stays on your device KnowWhen helps you know when to… • Give space • Offer support • Listen instead of fix • Lean in • Reconnect Privacy first. No accounts. No cloud. No tracking. Important KnowWhen provides informational insights. It is not medical advice and not a medical device. It describes population-level tendencies, not a guarantee of your partner's behaviour. Guess Less. Connect More. View Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Perform Fitness at Free against KnowWhen's $4.99. Perform Fitness also leads on update cadence (every 6 weeks vs every 3 months) and device support (4 vs 1). On rating, ratings volume, 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
Perform Fitness is free to download; KnowWhen costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Perform Fitness against 5.0 for KnowWhen. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Perform Fitness ships an update every 6 weeks, KnowWhen every 3 months. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | Perform Fitness | KnowWhen |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 176 MB | 6 MB |
| Age rating | 4+ | +17 |
| Developer | Perform Fitness (PTY) LTD | Launch Round |
Customer experience
Perform Fitness
KnowWhen
In-app purchases
Perform Fitness
No in-app purchases
KnowWhen
No in-app purchases
