Comparison

QuiTimer vs Challenge Log

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

Head to head
About

QuiTimer

This app helps you quit bad habits and embrace a simpler life. Track your progress in quitting smoking, drinking, or other vices. Share your achievements with friends for added motivation and accountability.

Highlights
  • Quit habit management
  • Progress tracking
  • Share achievements
  • Motivation through social sharing
  • Support for a stoic lifestyle
Features
Read full description

We support the realization of a simpler and more stoic life. The first step to challenge something is not to start something, but to quit something. No smoking, no drinking, no entertainment You can manage all your quits and know how long they last. By publishing the record to friends and SNS and creating a situation where others can see it You can get more motivation.

About

Challenge Log

Read full description

Small wins, every day. Challenge Log is a gentle stamp-based app for recording your daily study, work, and habits. With this major rebrand, both the look and the feel have been reborn. [Key Features] New Type x 3-Grade Stamps: Combine 6 types (Face, Hand, Aco, Hanamaru, Star, Flower) with 3 grades (Great, Good, A Little). You'll always find the right stamp for the day. Warm & Cool Themes: Switch between the warm-toned "Warm" and cool-toned "Cool" palettes to match your mood or the season. Simpler 3-Tab Home: Home / Timer / My Page — a cleaner flow. Tap any date on the calendar to open the record sheet directly. Inline Monthly Summary: Stamp and timer breakdowns are always visible on the Home screen. Onboarding for First-Timers: A five-page intro tour on first launch. Press a stamp yourself and get a feel for the app right away. Easy Login: Quick sign-in with Google or Apple. No tedious registration required. Record Without Sign-In: Save records locally without an account. Link to an account later to sync to the cloud. Larger Calendar Stamps: Each day's stamp is displayed larger, so your month's progress is easy to see at a glance. Timer Function: Set a time and focus. The screen stays on while running, with a reset confirmation dialog for peace of mind. Reminder Notifications: Set daily, weekly, monthly, or custom-interval reminders. Manage them all from Notifications on My Page. Calendar Sharing: Share challenges with friends and cheer each other on. Rename Your Stamps: Customize stamp-type names to make them your own. Reorder Your Stamps: Rearrange stamp types from Settings and put your favorites right up front. Profile Setup: Set a username and avatar to personalize your experience. No Goals, No Penalties: No quotas, no deadlines. Focus on just showing up. Daily Memos: Freely jot down notes, insights, or how you feel. App Notices: Timely updates on app news and consistency tips. Cloud Backup: Sign up to save records securely in the cloud. Migration between devices is easy. Multi-language: available in 15 languages — Japanese, English, Korean, Simplified Chinese, Traditional Chinese, German, French, Spanish, Portuguese (Brazil and Portugal), Italian, Dutch, Indonesian, Vietnamese and Thai. [Recommended if you...] - Want to quit being a "quitter" - Want a gentle-looking app you'll actually want to open - Want to build habits with friends - Dislike strict goal management or penalties - Want to try the app first without signing in - Want a theme you can switch by mood Start today — capture your "I did it" days with your favorite stamps.

Screenshots

QuiTimer2 screens
Challenge Log3 screens

Verdict

The call

The clearest difference is in-app purchases: Challenge Log at none against QuiTimer's 6. Challenge Log also leads on ads (none vs shown). QuiTimer's advantage is iOS requirement (12.0 vs 15.0). On price, 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. QuiTimer sells 6 one-off in-app purchases. Challenge Log asks for nothing beyond the download.

UpkeepUpdate frequency

QuiTimer ships an update monthly, Challenge Log fortnightly. The most recent releases landed on September 22, 2026 and August 22, 2026 respectively.

Scorecard3 real differences · 7 level
QuiTimer versus Challenge Log: the parameters behind the verdict, then further details
ParameterQuiTimerChallenge Log
PriceFreeFree
Rating4.9 (17 ratings) — better—
Positive reviews56.5% of reviews—
Number of ratings17 — better—
Update frequencyMonthlyFortnightly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size36 MB89 MB
Age rating4+4+
DeveloperRyosuke NakamuraYOSHIKI KOKUBO

In-app purchases

6 purchases

QuiTimer

One-time6
  • 250円分の決意$1.99
  • 610円分の決意$4.99
  • 1220円分の決意$9.99
Show 3 more
  • 2440円分の決意$19.99
  • 5140円分の決意$41.99
  • 10000円分の決意$79.99
None

Challenge Log

No in-app purchases

Questions

Is QuiTimer free?
QuiTimer is free to download, with in-app purchases available.
Is Challenge Log free?
Challenge Log is free to download, with no in-app purchases.
Do QuiTimer or Challenge Log have ads?
QuiTimer shows ads; Challenge Log does not.
Which is updated more often, QuiTimer or Challenge Log?
QuiTimer ships an update monthly, and Challenge Log fortnightly. Most recently, QuiTimer was updated on September 22, 2026 and Challenge Log on August 22, 2026.

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