Foldmetry vs Brain Preflight
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Foldmetry
Practice spatial reasoning skills for 11+ and CAT4-style assessments. Offers interactive exercises in mental rotation, cube nets, perspective taking, paper folding, block assembly, and cross sections. Unlock full features with a subscription or lifetime purchase.
- Mental Rotation exercises
- Cube Nets prediction
- Perspective Taking visualization
- Paper Folding reversal
- Block Assembly counting
- Cross Sections slicing
- Timed exam-style practice
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Practise spatial skills for 11+ non-verbal reasoning and CAT4-style spatial tasks. Preparing for grammar school or independent school assessments? Foldmetry offers short, focused practice in visualising shapes, understanding folds, and reasoning in 3D. Use it alongside your wider preparation: it is not a complete 11+ or CAT4 course and does not reproduce official tests. Foldmetry turns six spatial-reasoning skills into clear, interactive exercises: • Mental Rotation: recognize a solid after it turns in 3D • Cube Nets: predict how a flat net folds into a cube • Perspective Taking: visualize structures from another viewpoint • Paper Folding: reverse folds and predict position patterns • Block Assembly: count volume, missing cubes, and exposed faces • Cross Sections: find exact slices through 3D structures START FREE Start all six paths, complete the first two lessons in each path, try a daily mixed session, and review up to three missed questions at a time. Best scores, stars, streaks, and recent progress stay on your device. TIMED EXAM-STYLE PRACTICE With Pro, try 12 mixed questions across all six skills, with 40 seconds per question. Review accuracy and response time by skill to plan your next session. This is Foldmetry's own practice format, not an official exam simulation. PRACTICE YOUR WAY WITH FOLDMETRY PRO Unlock all 36 guided lessons, full ten-question Mistake Review, unlimited practice at difficulty levels 1–10, selectable session lengths, and complete training history. Choose an annual subscription with a 7-day free trial for eligible customers, or unlock Pro with a one-time lifetime purchase. Pricing and eligibility appear in the App Store purchase sheet. Restore purchases at any time from Settings. PRIVATE BY DESIGN No account. No ads. No behavioral tracking across apps or websites. Your training history, mistake queue, and preferences remain on your device. Foldmetry uses privacy-friendly anonymous analytics (TelemetryDeck) to understand which features help; you can turn this off in Settings. Exercises and licensed paper-folding animations work offline; a network connection is used for App Store purchases and optional analytics. Foldmetry is an independent educational practice tool. It does not measure IQ, provide medical advice, guarantee academic or exam results, or claim affiliation with any examination authority. CAT4 is a GL Assessment test; Foldmetry is not affiliated with or endorsed by GL Assessment. Terms of Use: https://sdli416.github.io/MyStockYardagesPrivacy/foldmetry/terms/ Privacy Policy: https://sdli416.github.io/MyStockYardagesPrivacy/foldmetry/privacy/
Brain Preflight
Engage in daily brain training with exercises mirroring pilot aptitude tests. Improve memory, logic, spatial reasoning, and multitasking skills. Prepare for aviation selections with tailored programs and mock exams.
- Pilot aptitude test exercises
- Memory, logic, spatial, multitasking training
- Tailored selection preparation programs
- Full mock exams under real conditions
- Cognitive diagnostic tools
- 100% offline functionality
- Aviation English and culture knowledge
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Brain Preflight: the aptitude tests airline pilots take, turned into daily brain training. Two ways to play: TRAIN YOUR BRAIN The same exercises used in pilot selections — memory, logic, spatial, multitasking — in a few minutes a day. Rank up, keep your streak, and keep your mind sharp with drills on another level than classic puzzle games. PREP YOUR SELECTION Applying as a cadet pilot, ENAC, air traffic controller, military? Pick your target: tailored program, countdown to test day, full mock exam under real conditions (Premium) and a diagnostic of your weak spots. 17 exercises calibrated on the real cognitive families: • Reasoning — number sequences, calculation grids, odd/even • Spatial — mental rotation, cubes, stacks, 3D objects • Memory — 2-back, word boxes, star words • Multitasking — Airways (air traffic control), psychomotor • Language and knowledge — aviation English, aviation culture 100% offline — train anywhere, no connection. Independent app — not affiliated with any airline, school or test publisher mentioned. — Brain Preflight Premium — Unlimited, ad-free, full mock exam and diagnostic. • Monthly and annual subscriptions: applicable prices are shown in the app before purchase. Billed to your Apple account, auto-renews unless cancelled 24h before period end. Manage in iOS Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aakk91.github.io/preflight-legal/privacy-policy-en.html
Screenshots
Verdict
The clearest difference is ads: Foldmetry at none against Brain Preflight's shown. Foldmetry also leads on ratings volume (3 vs 1). Brain Preflight's advantage is update cadence (every 2 days vs every 10 days) and iOS requirement (15.0 vs 17.0). On price, rating, in-app purchases and monetization model 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. Foldmetry sells 2 in-app purchases, starting at $9.99 per year and Brain Preflight sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Foldmetry against 5.0 for Brain Preflight. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Foldmetry ships an update every 10 days, Brain Preflight every 2 days. Both last shipped on October 31, 2026.
| Parameter | Foldmetry | Brain Preflight |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 10 days | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | 思迪 李 | Amine Kara |
Customer experience
Foldmetry
Brain Preflight
In-app purchases
Foldmetry
- Foldmetry Pro Annual7 Days trial$9.991 Year
- Foldmetry Pro Lifetime$24.99
Brain Preflight
- Premium Monthly$6.991 Month
- Premium Yearly$39.991 Year
Questions
Is Foldmetry free?
Is Brain Preflight free?
Which has better reviews, Foldmetry or Brain Preflight?
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