LightFasting vs CaffeineLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LightFasting
This app offers a scientific approach to weight loss by guiding users through a slightly high-intensity diet. It includes tools for calorie conversion, calculating ideal weight, basal metabolic rate, and BMI, along with tracking weight changes and energy intake.
- High-intensity diet guidance
- Calorie and Joule conversion
- Standard weight calculator
- Basal metabolic rate calculator
- Body mass index calculator
- Energy intake tracking
- Weight change tracking
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If you can't stick to the exercise, what if you can't see the effect of dieting? Use the "Light Diet" App to help you lose weight faster and more scientifically. -- Traditional dieting specifies the length of time by timer, but it is not only inefficient, but also needs to keep an eye on the time. It is easy for people to give up halfway because of too much trouble. Light dieting is different. Light dieting on a daily basis can effectively reduce the weight of people with excessive daily energy intake through a slightly high-intensity diet. Believe that as long as you persist, you will be able to get rid of the harm of overweight! The product also includes the following extension tools: Calorie Joule conversion (the energy on the bottle bag can finally be easily converted) Standard weight calculator Basal metabolic rate calculator Body mass index calculator Energy intake record Weight change record
CaffeineLog
Easily record and manage your daily caffeine intake to support a healthy lifestyle. Diagnose optimal consumption, track over 300 beverage types, and visualize your intake patterns over time. Sync data seamlessly across devices for convenient access.
- Support appropriate caffeine intake diagnosis
- Record from over 300 beverage types
- Customizable logs with tags, images, and notes
- Visual data display with time-series charts
- Seamless device synchronization via iCloud
- Pattern analysis by day, week, month, and year
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Caffeine Log is the ultimate app for effectively recording and managing your daily caffeine consumption, supporting a healthy lifestyle. With a rich set of features and intuitive operations, firmly control your caffeine intake! Main Features Support Appropriate Caffeine Intake Diagnose the optimal caffeine intake based on your user information. Protect your health while enjoying a comfortable caffeine life. Rich Caffeine Data Easily select and record from over 300 types of beverages. Support detailed logging with a wide variety of choices like coffee, tea, energy drinks, and more. Customizable Records Tagging, image attachments, and note additions are possible. Create your own detailed caffeine log. Visual Data Display Instantly check your daily intake and current caffeine level in your body. Track the digestion process with time-series charts. Seamless Device Synchronization iCloud compatible, synchronizing data across multiple devices like iPhone, iPad, Apple Watch, and more. Accessible anytime, anywhere. Highlight Feature for Pattern Analysis Check your caffeine intake and patterns by day, week, month, and year. Review your caffeine habits and aim for a healthier lifestyle. Premium Features Unlimited Customization Unlimited addition of brands and beverages Unlimited editing and adding of categories and foods Unlimited editing and adding of tags Exclusive Design Access to exclusive highlight cards Customizable theme colors Future Premium Features Enjoy the latest features with the ever-evolving Caffeine Log. Manage your caffeine intake smartly with Caffeine Log and achieve a healthy and balanced daily life! Download now and enhance your caffeine experience.
Screenshots
Verdict
The clearest difference is price: CaffeineLog at Free against LightFasting's $0.99. CaffeineLog also leads on update cadence (every 2 days vs every 2 months) and review sentiment (100% vs 83%). LightFasting's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 17.0). On rating, ads 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
CaffeineLog is free to download; LightFasting costs $0.99 up front. CaffeineLog sells 2 in-app purchases, starting at $1.99 per month. LightFasting asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for LightFasting against 5.0 for CaffeineLog. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 83% of LightFasting's written reviews are positive against 100% of CaffeineLog's.
LightFasting ships an update every 2 months, CaffeineLog every 2 days. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.
| Parameter | LightFasting | CaffeineLog |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, Apple Watch |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 44 MB | 50 MB |
| Age rating | 12+ | 4+ |
| Developer | 兴龙 张 | Yugo Matsuda |
Customer experience
LightFasting
CaffeineLog
In-app purchases
LightFasting
No in-app purchases
CaffeineLog
- Premium Monthly Plan7 Days trial$1.991 Month
- Premium Yearly Plan7 Days trial$14.991 Year









