ZL Performance vs Marr Strength
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZL Performance
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ZL Performance is a comprehensive training program for athletes looking to optimize their performance. Utilizing the best technology and our proprietary training solutions, we can assess, customize, and deliver a program you can't find anywhere else.
Marr Strength
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For members of Marr Strength 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: ZL Performance at none against Marr Strength's shown. On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.
| Parameter | ZL Performance | Marr Strength |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 84 MB |
| Age rating | 4+ | 4+ |
| Developer | ZL Performance LLC | Marr Strength & Conditioning, LLC |
In-app purchases
ZL Performance
No in-app purchases
Marr Strength
No in-app purchases
Questions
Is ZL Performance free?
Is Marr Strength free?
Do ZL Performance or Marr Strength have ads?
Which is updated more often, ZL Performance or Marr Strength?
Other comparisons
