Comparison

MartleyRocks vs Kairos

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

MartleyRocks

Features
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Interact with the fascinating and exceptional geology of Martley, Worcestershire, England, with this app which provides an interactive 2D/3D view of the geology and walking trails of the area. Set views over the terrain by moving around with touch gestures. GPS or touching the map provides information about the geology of that location. Interpretation of past environments and the β€˜voyage of Martley’ from the near the South Pole to 52’N over 700 million years of Earth history.

About

Kairos

Features
Read full description

Kairos is the UCAT trainer that drills the one thing every other course leaves to chance: your pace. Most UCAT prep sells you thousands of questions. Kairos trains how you spend your seconds. It measures your triage (solve, flag, or skip), your timing on every question, your guess discipline, and how your accuracy holds up as fatigue sets in, then turns each into a skill you can practise. WHAT YOU GET - All four sections: Verbal Reasoning, Decision Making, Quantitative Reasoning, and Situational Judgement. - Sprint and full mock exams in real exam order, with a live per-section timer, flag-and-review, and an on-screen calculator for DM and QR. - A post-exam report that shows where you lost marks to time versus rushing, your pacing curve across the paper, and one clear next action, not a vague predicted score. - A readiness signal that stays honest as you practise, and daily drills that serve your weakest area first. FREE TO START Every section has a free taster and your first sprint mock is free, so you can feel the method before you decide. PREMIUM Unlock every pack, full mocks, and the full coaching report. Choose Monthly with a 7-day free trial, a 3-month prep block that matches a real prep cycle, or a one-time Lifetime purchase. HONEST BY DESIGN No fake predicted scores. No misleading question counts. Kairos trains the exam-day behaviour that survives every format change, so the practice transfers to the real thing. Built for UK and ANZ candidates. Kairos: the opportune moment, trained. Kairos is not affiliated with or endorsed by the UCAT Consortium. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mightys.dev/kairos/privacy/

Screenshots

MartleyRocks4 screens
Kairos4 screens

Verdict

The call

The clearest difference is in-app purchases: MartleyRocks at none against Kairos's 3. MartleyRocks also leads on iOS requirement (11.0 vs 17.0). Kairos's advantage is update cadence (every 4 months vs every 46 months). On price, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Kairos sells 3 in-app purchases, starting at $7.99 per month. MartleyRocks asks for nothing beyond the download.

UpkeepUpdate frequency

MartleyRocks ships an update every 46 months, Kairos every 4 months. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
MartleyRocks versus Kairos: the parameters behind the verdict, then further details
ParameterMartleyRocksKairos
PriceFreeFree
Update frequencyEvery 46 monthsEvery 4 months β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS11.0 β€” better17.0
Further details β€” not scored
Size65 MB5 MB
Age rating4+4+
DeveloperMichael BrooksBranko Borota

In-app purchases

None

MartleyRocks

No in-app purchases

3 purchases

Kairos

Subscriptions2
  • Monthly7 Days trial$7.991 Month
  • 3-Month Prep Block$17.993 Months
One-time1
  • Lifetime$39.99

Questions

Is MartleyRocks free?
MartleyRocks is free to download, with no in-app purchases.
Is Kairos free?
Kairos is free to download, with in-app purchases available.
Do MartleyRocks or Kairos have ads?
Neither MartleyRocks nor Kairos shows ads.
Which is updated more often, MartleyRocks or Kairos?
MartleyRocks ships an update every 46 months, and Kairos every 4 months. Most recently, MartleyRocks was updated on November 11, 2026 and Kairos on November 5, 2026.

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