Correctly vs Attention Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Correctly
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True or false — how well do you trust your math instinct? Correctly is a fast, addictive math game built on one split-second decision: two equations appear with a comparison sign between them. Is it correct — or a trick? Tap YES or NO before time runs out. Sounds easy? The numbers grow, the clock shrinks, and tricky Roman numerals start sneaking in. One wrong answer ends your streak. HOW TO PLAY • Two equations appear, joined by a greater-than, less-than or equal sign • Decide whether the comparison is correct • Tap YES or NO — fast • Every level: bigger numbers, shorter time, sneaky Roman numerals WHY YOU'LL LOVE IT • Learn in three seconds, play for hours • Trains math speed, accuracy and concentration at once • Roman numeral rounds give your brain a fresh challenge • One-thumb gameplay — perfect for quick sessions anywhere • Clean, minimal design — zero distractions MATH THAT SHARPENS EVERY DAY Rapid-fire comparisons strengthen calculation speed and decision-making — the same skills used for checking prices, splitting bills, estimating and exam work. Fun for students, families, seniors and anyone who loves quick brain teasers. Put your skills to the test: how many can you get Correctly? Subscriptions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Attention Lab
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Attention Lab is a cognitive training app designed to sharpen your focus, perception and attention to detail. Complete a growing collection of attention-based tests and track your performance over time. Find the qs - Scan a grid of letters and tap every “q” as quickly and accurately as possible. Avoid the “p”. With 15 unique test banks and a 2-minute timer, no two sessions are the same. Image Perception Test - Study a scene image for 2.5 seconds, then identify what you saw from a set of options. Test your visual memory and perception across a range of real-world scenes. Features: • Multiple cognitive test types • Clean, simple design • Performance ratings and accuracy tracking • Free access to starter content • Pro upgrade for full access to all test banks and detailed results • Regular updates with new tests and content Perfect for anyone preparing for psychometric assessments, train driver selection tests, attention-based aptitude tests, or simply looking to sharpen their mental performance.
Screenshots
Verdict
The clearest difference is ads: Attention Lab at none against Correctly's shown. Attention Lab also leads on update cadence (weekly vs every 2 months). 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. Correctly sells 3 in-app purchases, starting at $0.99 per month and Attention Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Correctly ships an update every 2 months, Attention Lab weekly. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.
| Parameter | Correctly | Attention Lab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 14.0.0 |
| Further details — not scored | ||
| Size | 28 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Ivan Gastilovic | KALLUM MARTIN |
In-app purchases
Correctly
- 1 Month No Ads$0.991 Month
- 6 Months No Ads$4.996 Months
- 1 Year No Ads$8.991 Year
Attention Lab
- Full Access$0.99
Questions
Is Correctly free?
Is Attention Lab free?
Do Correctly or Attention Lab have ads?
Which is updated more often, Correctly or Attention Lab?
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