BarMath vs AbSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BarMath
This application simplifies barbell weight calculations for Apple Watch users. Quickly input your bar weight and available plates to get an instant total, allowing you to focus on your workout without mental math.
- Instant barbell weight calculation
- Plate selection for weight input
- Automatic doubling for both sides
- Clear and simple display
- Apple Watch integration
- Phone-free operation
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BarMath – Barbell Weight Calculator for Apple Watch BarMath makes calculating your barbell weight as easy as lifting it (well, almost)! With BarMath on your Apple Watch, just set your bar weight, tap in your plates, and let the app do the math. Perfect for gym-goers who want to skip the mental math and stay focused on the lift. Features: Instant Calculations: Add the bar weight, select your plates, and see the total instantly. Always on Your Wrist: No need to reach for your phone—calculate right from your Apple Watch. Clear & Simple Display: Easy-to-read weight totals with no extra clutter. Easy to Use: Tap plate to add weight. Tap more than once to add multiple of same weight. The app will automatically double the plates for both sides of bar and add bar weight for total.
AbSync
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See Your Body’s Natural Rhythm No Typing. No Lists. Just Watch the Flow. Most apps make you do a lot of work. AbSync is different. It uses the sensors on your Apple Watch to show you how your body is doing with a cool 3D liquid. You don’t have to type anything in or guess. Just look at the liquid on your watch to see your day in a fun, easy way. The "Buy It Once" Rule You shouldn't have to pay every month to use a tool for your watch. Pay one time. No monthly fees. Your data stays private. A Tool That Learns You Every person is different. That’s why AbSync takes 48 hours to learn how your body works. It watches your natural patterns to find what is "normal" for you. This helps the app give you the best guesses about your daily habits. The Three Main Screens: Fluid: A 3D cup that fills up and goes down based on your body’s data. After it learns your body, the liquid shows you how your fluid levels are trending. Zen: This screen shows how calm or busy your body feels. It helps you find your "center" so you can stay balanced all day. Temp Trend: This tracks if your body is getting warmer or cooler than usual. It helps you see how you are resting and recovering. Made for the Best Watches AbSync looks great on the Apple Watch Ultra. The screen stays on so you can see your 3D liquid whenever you want. It looks like real glass and water right on your wrist! Legal Disclaimer AbSync is a wellness utility for personal habit observation. It is not a medical device and is not intended to diagnose, treat, or monitor any clinical condition. All insights, including Fluid, Zen, and Temp Trend, are computational estimates based on patterns identified during the calibration period and do not represent absolute biological measurements. Always consult a healthcare professional for medical concerns.
Verdict
The clearest difference is price: BarMath at Free against AbSync's $0.99. BarMath also leads on iOS requirement (13.0 vs 15.6). On ads, in-app purchases 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
BarMath is free to download; AbSync costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | BarMath | AbSync |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | Tanya Landsman | BuildLoop |
In-app purchases
BarMath
No in-app purchases
AbSync
No in-app purchases








