GrappleDex vs Corner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GrappleDex
Log your Brazilian Jiu-Jitsu training sessions to track progress and understand your game. Set training focuses, review past sessions, and identify patterns in your techniques and positions. Stay consistent with reminders and weekly summaries.
- Log BJJ sessions with positions, techniques, and notes
- Tag sessions as Gi or No-Gi
- Search training history instantly
- Set session focus and track accountability
- Visualize progress with heatmaps and graphs
- Compare related sessions for pattern identification
- Weekly summaries and logging reminders
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GrappleDex is a Brazilian Jiu-Jitsu training journal built specifically for BJJ practitioners. Log your sessions, train with intention, and understand your game over time. Your sessions are private by default. Share the ones you want to the community feed and see what other grapplers are working on. Log BJJ Sessions in Seconds - Record positions, techniques, notes, duration, and session feedback - Attach photos from the mats - Instantly search your full training history - Review detailed sessions with notes and related training - Light and dark themes Share Your Training - A community feed of shared sessions from grapplers everywhere - Like sessions and see who liked yours - Tap anyone to see their belt, gym, training stats, and recent activity Train With Intention - Set a focus for your next session or training week - Stay accountable before and after class - Reflect on your focus as you log sessions - Review past focuses alongside your training calendar See Your Progress Clearly - Track sessions, hours, and training days - Discover your most trained positions and techniques - Visualize patterns with heatmaps and activity graphs - Spot strengths, gaps, and trends in your game Understand Your Game - Compare related sessions to identify recurring patterns - Keep notes, techniques, and positions organized in one place - Build a clearer picture of how you actually train Stay Consistent - Get reminders to log and reflect after training - Receive weekly summaries based on your activity - Build habits that support long-term improvement Unlock More With Pro - Create custom positions and techniques of your own - Support the continued development of GrappleDex Built for every BJJ practitioner; hobbyist, competitor, or coach. Whether you train for fitness, self-defense, or competition, GrappleDex helps you stay organized, train with purpose, and continuously improve in Brazilian Jiu-Jitsu. Website: https://grappledex.com/ Instagram: https://instagram.com/grappledex Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 iOS requirement: GrappleDex at 15.1 against Corner's 17.0. On price, 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
Both are free to download. GrappleDex sells 1 in-app purchase, starting at $2.99 per month and Corner sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | GrappleDex | Corner |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 69 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Aoshen Zhou | Liridon Tahiraj |
In-app purchases
GrappleDex
- GrappleDex Pro7 Days trial$2.991 Month
Corner
- Corner Pro$9.99









