KORElab vs Peterson Grapplers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KORElab
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For members of KORElab to reserve their place in a class, sign up for gym events, and general account management like updating headshots and credit card on file.
Peterson Grapplers
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For members of Peterson Grapplers to reserve their place in a class, sign up for gym events, and general account management like updating headshots and credit card on file.
Screenshots
Verdict
The clearest difference is ads: KORElab at none against Peterson Grapplers's shown. Peterson Grapplers's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
KORElab ships an update every 6 weeks, Peterson Grapplers every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | KORElab | Peterson Grapplers |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15 | 15 |
| Further details — not scored | ||
| Size | 77 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | KORElab Performance | PushPress, Inc. |
In-app purchases
KORElab
No in-app purchases
Peterson Grapplers
No in-app purchases
Questions
Is KORElab free?
Is Peterson Grapplers free?
Do KORElab or Peterson Grapplers have ads?
Which is updated more often, KORElab or Peterson Grapplers?
Other comparisons
