JabClock vs Corner
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.
Corner
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CORNER — THE BOXING ROUND TIMER YOU CAN READ ACROSS THE GYM Corner is a round and interval timer built for combat sports and high-intensity training. Big, bold, readable — from the ring, the bag, or the far side of the gym. FREE — A COMPLETE BOXING TIMER Start training in seconds with the classic boxing preset: 3:00 rounds, 1:00 rest, with prep, a 10-second warning, and the bell. Full-bleed phase colors — green to fight, amber for the last ten, red to rest — so you always know where you are at a glance. Works in portrait and landscape, keeps the screen awake, and sounds the bell even on silent or with the phone locked in your pocket. CORNER PRO — ONE-TIME UNLOCK, NO SUBSCRIPTION - Custom schemes — set your own rounds, work, rest, warning and prep for boxing, MMA, HIIT, Tabata or circuits - Voice call-outs — hear the round, the warning and the rest without looking down - Apple Watch app — start, pause and feel every round buzz on your wrist - Gym Clock mode — a full-screen landscape wall clock you can read across the room BUILT FOR THE WAY YOU TRAIN Boxing, kickboxing, Muay Thai, MMA, BJJ and wrestling — plus HIIT, Tabata, CrossFit and circuit training. Whether you're sparring, hitting the bag, shadowboxing or grinding conditioning rounds, Corner keeps the time so you can keep working. WHY CORNER - Read it from anywhere — giant digits, full-screen color - No ads, no subscription — Pro is a one-time purchase - Fully on-device — no account, no tracking, nothing collected - Accessible — color-blind mode adds words and patterns, VoiceOver announces every phase, Reduced Motion is respected Made for training. Not medical or professional-refereeing equipment. Terms of Use: https://arytec.ch/corner/terms Privacy Policy: https://arytec.ch/corner/privacy Support: https://arytec.ch/corner/support
Screenshots
Verdict
The clearest difference is in-app purchases: JabClock at none against Corner's 1. Corner's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Corner sells 1 one-off in-app purchase. JabClock asks for nothing beyond the download.
| Parameter | JabClock | Corner |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 4 days | — |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | David Luong | Liridon Tahiraj |
In-app purchases
JabClock
No in-app purchases
Corner
- Corner Pro$9.99









