Comparison

NightFast vs PRYSTN Strength

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

Head to head
About

NightFast

This app helps shift workers track intermittent fasting windows that align with their unique schedules. It offers flexible tracking, custom schedules, and smart features like offline functionality and dark mode, all while prioritizing user privacy.

Highlights
  • Custom fasting schedules for shift work
  • Flexible tracking for various protocols
  • Visual timeline of fasting/eating windows
  • Notifications aligned with sleep schedules
  • Offline functionality
  • Dark mode optimized for night shifts
Features
Read full description

NightFast helps you stop late-night snacking, without willpower speeches. When your night window starts, NightFast steps in with a gentle prompt, right when the fridge starts calling. Each morning, one tap tells it how the night went. Good nights build a streak. Snack nights get zero judgment. HOW IT WORKS • Take a 60-second quiz about your nights. NightFast builds your night window around it. • Gentle night prompts during your window: supportive, direct, gentle, or funny, your choice. • Craving? Start the 10-minute timer and wait it out with a breathing circle and small ideas. Most cravings fade. • Morning check-in: "How was last night?" One tap, and your good-night streak grows. See every night on the Nights calendar. • Spot your pattern: after a night snack, tap what was behind it (bored, stressed, tired, hungry, habit). • An on-device AI learns when your cravings hit. See exactly what it reads and how it decides, 100% on your iPhone. • Every Sunday, a short recap of your week of nights. LOG WHAT YOU EAT • Search foods or scan a barcode • Quick Log and Manual Entry for the 2 AM moments • Calories and macros at a glance • Pin your usual snacks for one-tap logging • Light night bites: easy, sleep-friendly recipe ideas for when you're actually hungry • Home Screen and Lock Screen widgets (including your good-night streak) and Live Activities during night hours • "Hey Siri, I'm craving a snack" and a Control Center craving button • Choose your Home: the live AI view or a card dashboard you arrange FREE • 20 food logs a day • Night prompts, craving timer, morning check-in, streaks, and on-device AI NIGHTFAST PRO • Unlimited food logging • Custom meal schedules for any night or shift pattern • Detailed insights and trends • Apple Health sync • Grocery lists • Family Sharing (up to 5 people) Works for night owls, new parents, and night-shift workers. Your night window fits your clock, not the sun's. SUBSCRIPTIONS NightFast Pro is available as a monthly or yearly auto-renewing subscription, or a one-time Lifetime purchase. Payment is charged to your Apple ID at confirmation. Subscriptions renew unless cancelled at least 24 hours before the end of the period. Manage them in your Apple ID account settings. Terms of Use (EULA): https://www.nightfast.tech/terms Privacy Policy: https://www.nightfast.tech/privacy PRIVACY • Your food log and patterns stay on your iPhone • The AI runs entirely on device • No third-party tracking, no data selling

About

PRYSTN Strength

This app offers structured strength training programs with clear tutorials for various equipment. It's designed to help users build muscle, lose fat, and increase strength through progressive workouts and advanced training systems.

Highlights
  • Expertly designed strength training workouts
  • Clear exercise tutorials
  • Progressive training programs
  • Support for barbells, dumbbells, kettlebells, and weighted vests
  • Minimal equipment workout options
  • Muscle building and fat loss focus
Features
Read full description

PRYSTN Strength is a premium strength training app built for those who want to train with intent, structure, and purpose. Access expertly designed workouts using barbells, dumbbells, kettlebells, weighted vests, and minimal equipment - with clear exercise tutorials, progressive programmes, and powerful training systems built to help you build muscle, lose fat, and develop strength that lasts. To get access to the app an active subscription is required. Standard Apple's terms of service apply: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://corefocus.ymove.app/privacy-policy-app

Screenshots

NightFast4 screens
PRYSTN Strength4 screens

Verdict

The call

The clearest difference is monetization model: NightFast at freemium against PRYSTN Strength's subscription. PRYSTN Strength's advantage is iOS requirement (16.6 vs 18.0). On price, review sentiment, 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. NightFast sells 3 in-app purchases, starting at $4.99 per month and PRYSTN Strength sells 3 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
NightFast versus PRYSTN Strength: the parameters behind the verdict, then further details
ParameterNightFastPRYSTN Strength
PriceFreeFree
Rating4.3 (6 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings6 — better—
Update frequencyEvery 5 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterSubscription
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.016.6 — better
Further details — not scored
Size22 MB95 MB
Age rating4+12+
DeveloperKollin CroylePRYSTN LTD

Customer experience

NightFast

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PRYSTN Strength

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

NightFast

Subscriptions2
  • NightFast Pro Monthly$4.991 Month
  • NightFast Pro Yearly$29.991 Year
One-time1
  • NightFast Pro Lifetime$59.99
3 purchases

PRYSTN Strength

Subscriptions3
  • Monthly Membership7 Days trial$19.991 Month
  • 3 Month Membership7 Days trial$49.993 Months
  • Yearly Membership7 Days trial$199.991 Year

Questions

Is NightFast free?
NightFast is free to download, with in-app purchases available.
Is PRYSTN Strength free?
PRYSTN Strength is free to download, with in-app purchases available.
Do NightFast or PRYSTN Strength have ads?
Neither NightFast nor PRYSTN Strength shows ads.

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