JabClock vs SyncUp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JabClock
A highly configurable round timer designed for combat sports and interval training. Customize rounds, rest, and alerts for a focused workout. Features glove-friendly controls and offline functionality.
- Configurable rounds and rest periods
- Multiple built-in training presets
- Create and save custom presets
- Variety of sound alerts
- Adjustable volume and haptic feedback
- Glove-friendly shake to pause
- Offline functionality
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JabClock is a precision round timer built for boxing, MMA, Muay Thai, and interval training. Set your rounds, rest periods, and warning alerts — then focus on your workout. FEATURES • Fully configurable rounds, rest duration, preparation countdown, and warning alerts • Five built-in presets: Pro Boxing, Quick Rounds, HIIT Tabata, MMA, and Muay Thai • Create and save unlimited custom presets for any training style • Choose from six distinct sound alerts: bell, buzzer, clap, airhorn, whistle, and beep • Adjustable volume, haptic feedback, and visual flash warnings • Shake to pause — designed for use with boxing gloves on • Proximity sensor support for hands-free pause and resume • Keep Screen On mode so your timer stays visible mid-workout • Clean, glove-friendly interface with large countdown display and round tracking • Works offline with no account required Whether you're training solo at home or timing rounds at the gym, JabClock keeps you on pace so you can stay focused on what matters.
SyncUp
This alarm clock helps heavy sleepers wake up on time by syncing with a partner, requiring challenge completion to dismiss, or implementing a paid snooze feature. Track your progress with streaks and stats, and customize sounds and challenges to fit your routine.
- Partner alarm synchronization
- Wake-up challenges (math, physical)
- Optional paid snooze feature
- Wake-up streaks and statistics
- Customizable alarm sounds and challenges
- Real-time wake-up status sharing
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Wake up together — even from miles apart. SyncUp is the alarm clock that actually gets heavy sleepers out of bed: sync your alarm with a wake-up buddy, solve a challenge to shut it off, or charge yourself for every snooze. Three ways to finally wake up on time. PARTNER MODE Pair your alarm with a friend, roommate, or partner and see each other's wake-up status in real time. Still snoozing? Get a nudge. It's shared accountability that works whether you're in the same house or different time zones. WAKE-UP CHALLENGES Tapping "dismiss" half-asleep isn't an option. Before your alarm stops, you'll solve a challenge — a math problem, or physically getting up to touch grass — to prove you're actually awake. Pick the challenge type and difficulty that fit your routine. PAID SNOOZE (OPTIONAL) For anyone who needs real stakes: every snooze charges you $0.99, straight from your account. Get up and you keep it. Sleep in and you pay for it. Available to everyone, free or Pro. ALSO INCLUDES - Wake-up streaks and stats to track your progress - Customizable alarm sounds, challenge types, and snooze pricing - Activity feed with your full wake-up history PLANS - SyncUp Pro — Unlimited alarms, all challenge types including partner challenges, and more. - Paid Snooze (optional) — Add extra motivation with a charge per snooze. Available to all users, free or Pro. Terms of Use: https://syncupalarm.com/terms Privacy: https://syncupalarm.com/privacy Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. Subscriptions can be managed, and auto-renewal turned off, in Account Settings after purchase. Lifetime Purchases are a one-time purchase for lifetime access.
Screenshots
Verdict
The clearest difference is in-app purchases: JabClock at none against SyncUp's 4. JabClock also leads on update cadence (every 4 days vs every 3 weeks) and ratings volume (8 vs 2). SyncUp's advantage is ads (none vs shown). On price, rating 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
Both are free to download. SyncUp sells 4 in-app purchases, starting at $3.99 per month. JabClock asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for JabClock against 5.0 for SyncUp. Both are backed by a comparable volume of ratings — 8 and 2 respectively.
JabClock ships an update every 4 days, SyncUp every 3 weeks. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.
| Parameter | JabClock | SyncUp |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 6 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | David Luong | Phillip Boscarino |
Customer experience
JabClock
SyncUp
In-app purchases
JabClock
No in-app purchases
SyncUp
- SyncUp Pro Monthly3 Days trial$3.991 Month
- SyncUp Pro Yearly3 Days trial$24.991 Year
- Bypass Alarm$0.99
- SyncUp Pro Lifetime$44.99









