Numery vs Foldmetry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numery
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Your memory isn’t born; it’s built. Numery gives you control over everything you always forget: phone numbers, passwords, birthdays, historical facts… All using historically proven methods employed by memory geniuses. Reduce your COGNITIVE DECLINE. Counterbalance AI usage. Several scientific studies agree that the more you use your memory, the longer you’ll maintain your cognitive abilities intact. Nowadays, we delegate so much cognitive processing to AI that our brains become lazier. And if we don’t act now, by the time we want to reverse the negative effects, it will be too late. What you can do with Numery: • Major System — turn numbers into memorable words and mental images, with clear rules. • Spaced repetition quizzes — review at just the right times to lock in what you’ve learned without overwhelm. • My Numbers — save what matters to you • Converter and simulator — practice encoding and decoding until it becomes automatic. • Challenges — don’t just memorize what you already know, memorize much more. • Languages — Numery supports English, Spanish, French and Italian. Privacy as the foundation Your study data never leaves your devices to train models or for third-party analytics. EVERYTHING stays on your devices. Train with peace of mind. Numery is developed by an independent developer. Your feedback and suggestions help shape future updates. If you find the app useful, a rating would mean a lot. If you need technical support, want to send feedback, or just want to say hello, you can email corde.elencato-5y@icloud.com. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.numeryapp.com/privacypolicy
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/
Screenshots
Verdict
The clearest difference is update cadence: Numery at every 2 days against Foldmetry's every 9 days. Foldmetry's advantage is iOS requirement (17.0 vs 26.0). On price, ads, 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. Numery sells 3 in-app purchases, starting at $1.99 per month and Foldmetry sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.
Numery ships an update every 2 days, Foldmetry every 9 days. The most recent releases landed on September 9, 2026 and October 1, 2026 respectively.
| Parameter | Numery | Foldmetry |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | David Carlander-Reuterfelt Gallo | 思迪 李 |
In-app purchases
Numery
- Numery Pro mensual$1.991 Month
- Numery Pro – Anual3 Days trial$9.991 Year
- Numery Pro de por vida$34.99
Foldmetry
- Foldmetry Pro Annual7 Days trial$9.991 Year
- Foldmetry Pro Lifetime$24.99









