Comparison

Bonfire vs Planck Fasting

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

Head to head
About

Bonfire

This app offers a private space to journal your thoughts anonymously, accompanied by soothing campfire sounds and ambient visuals. It provides a calm environment for self-reflection, stress relief, and building a journaling habit without the pressures of social media.

Highlights
  • Anonymous and safe journaling
  • Empathy button for connection
  • Soothing campfire sounds
  • Customizable background themes
  • Daily missions and rewards
  • Optional premium features
Features
Read full description

Loved by over 120,000 people — tired of social media? Gather around the Bonfire. ■ What is Bonfire? Bonfire is an anonymous diary app where you can write your thoughts while listening to soothing campfire sounds. No names, no profile pictures, and no comment sections. There is only an "empathy" button. From happy moments to difficult days, gently record your feelings by the campfire. ■ Perfect for you if... You're tired of social media You want to build a journaling habit You want to be heard without needing replies You want to relax before bed You tend to bottle up stress You want a safe, anonymous place to write ■ Key Features Anonymous & Safe No registration required. Start right away without an account. Choose to make your entries public or private. Connect Through Empathy No comments — just an empathy button. Express your feelings with over 18 reaction icons. Soothing Campfire Sounds Realistic campfire audio and beautiful background music gently create a relaxing atmosphere. The ambiance automatically changes between day and night. Beautiful Camp Backgrounds Choose from over 18 stunning background themes: Mt. Fuji, aurora, cherry blossoms, starry skies, lakeside, and more. Daily Missions Complete daily missions and collect firewood points. ■ Premium Features Ad-free experience No character limit All background themes unlocked Calendar view Diary editing Block specific words AI filter that automatically hides negative entries All background music unlocked Passcode lock ■ Supported Languages Japanese / English / Korean / Chinese ■ Contact Us Feel free to reach out anytime through the in-app Settings. Terms of Use: https://bonfire-diary.com/en/terms/ Privacy Policy: https://bonfire-diary.com/en/privacy/

About

Planck Fasting

This app provides a simple intermittent fasting timer with pre-set protocols. It tracks your fasting periods and offers a clean history of completed fasts. Designed for privacy, it works offline and syncs via iCloud without requiring accounts or tracking.

Highlights
  • Intermittent fasting timer
  • Pre-set fasting protocols
  • Fasting history tracking
  • Live progress ring
  • Offline functionality
  • iCloud syncing
  • Dark UI
Features
Read full description

Planck Fasting is an intermittent fasting timer that gets out of your way. Pick a protocol, hit start, and the timer runs. When you break your fast, it goes into your history. That is the whole app. PROTOCOLS 14:10 for a gentle start 18:6 for deeper ketosis 20:4 for advanced fasters FEATURES A live ring that shows how far into the fast you are Clean history of every completed fast with start time, end time, and duration Pick your default protocol once and forget it Dark UI built for late nights and early mornings Works fully offline Syncs across your iPhone and iPad through your private iCloud database PRIVACY No accounts. No tracking. No ads. No analytics. Your fasting data lives on your device and in your own iCloud, nowhere else. NOT MEDICAL ADVICE Planck Fasting is a tracking tool, not a medical device. Talk to a qualified clinician before starting any fasting protocol, especially if you are pregnant, breastfeeding, taking medication, or have a history of disordered eating. THE PLANCK SERIES Planck Fasting is part of a small family of focused single purpose apps. Same dark aesthetic, same hbar mark, same idea: do one thing, do it well, then get out of the way.

Screenshots

Bonfire4 screens
Planck Fasting2 screens

Verdict

The call

The clearest difference is in-app purchases: Planck Fasting at none against Bonfire's 11. Planck Fasting also leads on ads (none vs shown). Bonfire's advantage is ratings volume (6 vs 1) and iOS requirement (14.1 vs 17.0). On price, rating, update cadence and device support 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. Bonfire sells 11 in-app purchases, starting at $1.99 per month. Planck Fasting asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Planck Fasting holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Bonfire has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Bonfire versus Planck Fasting: the parameters behind the verdict, then further details
ParameterBonfirePlanck Fasting
PriceFreeFree
Rating4.8 (6 ratings)5.0 (1 ratings) — better
Positive reviews53.6% of reviews—
Number of ratings6 — better1
Update frequencyWeeklyWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPod — betteriPhone
Requires iOS14.1 — better17.0
Further details — not scored
Size97 MB1 MB
Age rating17+17+
DeveloperYuto OtaniYeong Kwon

In-app purchases

11 purchases

Bonfire

Subscriptions2
  • Bonfire Premium$1.991 Month
  • Bonfire Premium$22.991 Year
One-time9
  • [Support] Coffee$1.49
  • Premium plan$4.99
  • [Support] Firewood$4.99
Show 6 more
  • Premium plan$7.99
  • [Support] Lantern$9.99
  • Premium plan$11.99
  • [Support] Sleeping Bag$19.99
  • [Support] Tent$49.99
  • [Support] Rent Out the Campsite$99.99
None

Planck Fasting

No in-app purchases

Questions

Is Bonfire free?
Bonfire is free to download, with in-app purchases available.
Is Planck Fasting free?
Planck Fasting is free to download, with no in-app purchases.
Which has better reviews, Bonfire or Planck Fasting?
Planck Fasting is rated higher. Bonfire averages 4.8 out of 5 from 6 ratings, while Planck Fasting averages 5.0 from 1 ratings.
Do Bonfire or Planck Fasting have ads?
Bonfire shows ads; Planck Fasting does not.
Which is updated more often, Bonfire or Planck Fasting?
Bonfire ships an update weekly, and Planck Fasting weekly. Most recently, Bonfire was updated on October 29, 2026 and Planck Fasting on October 7, 2026.

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