BuiltDiff vs Caffix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BuiltDiff
Log your weightlifting sets and reps with a clean, distraction-free interface. Visualize your progress with charts and personalize the app's appearance. Enjoy offline functionality and a sign-up-free experience for efficient workouts.
- Log lifts, sets, and reps
- Create custom workout routines
- Offline functionality
- Sign-up-free experience
- Visualize progress with charts
- Personalize app appearance
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Track your lifts, sets, and reps and watch your strength soar! Enjoy a clean and simple design that makes navigation a breeze. Focus on your workout without any distractions, making your lifting sessions efficient and effective. Features: - watchOS companion app - Tailor your own workout routines - No internet connection needed - Sign up-free experience - Convenient keyboard add-ons for efficient logging of weights and reps - Permanent recording of all your lifts - Visualize your lifting progression through charts - Select your preferred color and personalize the app to make it uniquely yours
Caffix
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Most people drink caffeine every day, but almost nobody manages it. CafFix changes that. Tell us your goal, better sleep, sharper energy, or just staying within your daily limit, and we'll build a caffeine plan around your body, your schedule, and your life. Your personalized caffeine limit: Forget the generic "400mg a day" advice. CafFix calculates your exact daily limit based on your body weight and age, so your goal actually means something. Know when to stop automatically: Based on your bedtime, CafFix tells you your caffeine cutoff time every single day. So you stop guessing why you can't fall asleep. Three goals. One app. * Sleep Better - optimize your caffeine cutoff for deeper rest * Optimize Energy - time your intake for peak performance * Just Track It - stay under your daily safety limit Always with you: Live Activities on your lock screen and a home screen widget mean you never have to open the app to know where you stand. Built around your week: Different bedtime on weekends? CafFix adapts your caffeine windows day by day. Finally, a caffeine tracker that works as hard as your morning coffee.
Screenshots
Verdict
The clearest difference is iOS requirement: BuiltDiff at 17.0 against Caffix's 26.0. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BuiltDiff ships an update every 2 weeks, Caffix every 3 weeks. The most recent releases landed on June 11, 2026 and September 22, 2026 respectively.
| Parameter | BuiltDiff | Caffix |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 314 MB |
| Age rating | 4+ | 17+ |
| Developer | Timmy Nguyen | Tunde Timea Bartha |
In-app purchases
BuiltDiff
No in-app purchases
Caffix
No in-app purchases
