Comparison

Paleo Fasting vs Rhythmus

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

Head to head
About

Paleo Fasting

Features
Read full description

Paleo Fasting is your complete fasting companion โ€” whether you're starting your first intermittent fast or exploring advanced protocols like dry fasting and fast mimicking. TRACK YOUR FASTS Start, pause, and monitor your fasts with a clean, intuitive timer. Track your fasting history and see your progress over time. All your data stays on your device โ€” your privacy comes first. ADVANCED FASTING MODES Go beyond basic intermittent fasting with built-in support for: - Dry Fasting โ€” track periods of fasting without water intake - Fast Mimicking โ€” follow structured low-calorie fasting protocols with guided tracking - Intermittent Fasting โ€” choose from popular schedules like 16:8, 18:6, 20:4, OMAD, and more Unlike other fasting apps, Paleo Fasting lets you apply Dry Fast and Fast Mimicking modes to any fraction of an ongoing fast โ€” not just the entire session. Switch between modes mid-fast to match how you actually practice. Use the customizable Dry Fast Multiplier to estimate your effective fasting hours compared to a typical water fast, giving you a clearer picture of your real fasting effort. LEARN THE SKILL OF FASTING Fasting is more than skipping meals โ€” it's a life skill. Paleo Fasting helps you understand the science and practice behind effective fasting, so you can make it a sustainable part of your lifestyle. SHARE AND CONNECT Join a community of fellow fasters. Share your experience, ask questions, and learn from others who are on the same journey. Access the community forum exclusively through the app with a subscription. BACK UP YOUR DATA Safely back up your fasting data to iCloud so you never lose your progress, even when switching devices. SUBSCRIPTION Paleo Fasting is free to download and use. A subscription unlocks access to the community forum and premium features. Payment is processed through your Apple ID. Free trial available โ€” cancel anytime. Privacy Policy: https://paleokarma.com/privacy-policy-paleo-fasting-app/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Rhythmus

Features
Read full description

Rhythmus is a period tracker with a cycle calendar โ€” plus a nutrition and training plan that changes with your cycle. WHAT RHYTHMUS DOES โ€ข Cycle and period calendar: log your period, see your cycle day and phase at a glance, with estimated ovulation and fertile window โ€ข Nutrition plan: meals and nutrients matched to your current phase โ€“ omnivore, vegetarian, vegan โ€“ with a shopping list โ€ข Training plan: workouts scaled to your intensity and training days, logged set by set โ€ข Supplements: which nutrients matter in which phase โ€ข Daily energy check-in: feeling low, and the app suggests a gentler session โ€ข Weekly overview, symptom diary, cycle statistics from your own history WHO IT IS FOR For women who train and notice that the same session feels easy one week and impossible the next. Menstruation, follicular phase, ovulation and the luteal phase each ask for something different โ€” Rhythmus takes that into account. NO ACCOUNT, NO TRACKING No sign-up, no registration, no ads, no subscriptions, no in-app purchases. Everything you enter stays on your device and is sent nowhere. The app works fully offline. From Settings you can export a backup at any time and restore it on another device. WITH SOURCES Every health statement in the app comes with a citation you can tap โ€” straight to the study or fact sheet. Among others from the Journal of the International Society of Sports Nutrition, the Journal of Medical Internet Research and the National Institutes of Health. Available in German, English and Spanish. Rhythmus is a free passion project. Note: Rhythmus is not a medical device, not a contraception method, and does not replace medical advice.

Screenshots

Paleo Fasting4 screens
Rhythmus4 screens

Verdict

The call

The clearest difference is in-app purchases: Rhythmus at none against Paleo Fasting's 3. Rhythmus also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Paleo Fasting sells 3 in-app purchases, starting at $8.99 per month. Rhythmus asks for nothing beyond the download.

UpkeepUpdate frequency

Paleo Fasting ships an update every 3 weeks, Rhythmus every 2 days. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

Scorecard3 real differences ยท 3 level
Paleo Fasting versus Rhythmus: the parameters behind the verdict, then further details
ParameterPaleo FastingRhythmus
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.0 โ€” better
Further details โ€” not scored
Size6 MB20 MB
Age rating12+4+
DeveloperPaleo Karma LLCPatrick Sarpen

In-app purchases

3 purchases

Paleo Fasting

Subscriptions2
  • Monthly Access7 Days trial$8.991 Month
  • Annual Access7 Days trial$59.991 Year
One-time1
  • Lifetime Access$199.99
None

Rhythmus

No in-app purchases

Questions

Is Paleo Fasting free?
Paleo Fasting is free to download, with in-app purchases available.
Is Rhythmus free?
Rhythmus is free to download, with no in-app purchases.
Do Paleo Fasting or Rhythmus have ads?
Neither Paleo Fasting nor Rhythmus shows ads.
Which is updated more often, Paleo Fasting or Rhythmus?
Paleo Fasting ships an update every 3 weeks, and Rhythmus every 2 days. Most recently, Paleo Fasting was updated on October 2, 2026 and Rhythmus on October 18, 2026.

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