HappyKey vs Memorize
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HappyKey
This app offers a specialized keyboard for easily inputting a wide range of mathematical symbols. It includes numbers, operators, pi, infinity, and more, simplifying the process of writing math notation on your device.
- Specialized math symbol keyboard
- Includes numbers and operators
- Supports pi and infinity symbols
- Simplifies math notation input
- Customizable keyboard layout
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HappyKey provides you with a simple keyboard with many useful math symbols. It will fulfill all of your math notation needs with numbers, superscripts, pi, math operators and relations, infinity, and beyond. Install the app first, then to setup the keyboard go to Settings > General > Keyboard > Keyboards > Add New Keyboard > HappyKey Note: This is not a calculator. This is an additional keyboard that makes it easier to type math notation. Credit for the keyboard functionality and design goes to the open source Tasty Imitation Keyboard by Alexei Baboulevitch (GitHub user archagon).
Memorize
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Memorize helps you truly learn the passages that matter — Bible verses, catechism answers, poems, quotes, or anything else you want to know by heart. Start by pasting a passage or typing one in. Then practice with as much or as little help as you need: • ENTIRE TEXT — read it until it's familiar • FIRST LETTERS — see just the first letter of each word as a prompt • HALF THE WORDS — first letters for a random half, blanks for the rest • FIRST + LAST — only the opening and closing words • BLANKS ONLY — one blank per word, all from memory • TYPE IT — type the passage and get instant word-by-word feedback, with optional hints when you're stuck Add a picture to any item — a photo of the page, a memory-book illustration, or anything that jogs your memory — and show it alongside any practice mode. EASY, MEDIUM, HARD Three presets let you dial difficulty up as you improve, and any item can keep its own custom settings. One tap returns everything to the session preset. ORGANIZE AND SHARE Group passages into lists, tag them (Sunday School, AWANA, family devotions…), and reorder them however you like. Share a whole list as a file that another Memorize user can import — perfect for teachers and parents. TRACK PROGRESS See how many times you've typed each passage correctly and which words trip you up most. PRIVATE BY DESIGN Your lists live on your device and sync through your personal iCloud account. No accounts to create, no ads, no tracking. "Thy word have I hid in mine heart…" — Psalm 119:11
Screenshots
Verdict
HappyKey and Memorize are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | HappyKey | Memorize |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (9 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 8 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 26 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Baratti | LANCE JOSEPH KELLNER |
In-app purchases
HappyKey
No in-app purchases
Memorize
No in-app purchases









