Comparison

Lock Learn vs Math Daily

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

Head to head
About

Lock Learn

Learn new vocabulary effortlessly by having words and definitions appear on your phone's lock screen every 10 minutes. Create custom word lists for any subject, from languages to professional terms, and tap to explore them further. Start with 20 free words and unlock unlimited access with a one-time purchase.

Highlights
  • Lock screen vocabulary widget
  • Customizable word lists by topic
  • Definitions and grammar labels
  • Tap to view word details
  • One-time purchase for unlimited words
Features
Read full description

Lock Learn puts a vocabulary word on your lock screen and swaps it out every 10 minutes, all day. You're checking your phone constantly anyway, so you might as well pick something up in the meantime. There are no study sessions, no streaks to maintain, and no extra time required. How it works: Add the Lock Learn widget to your lock screen. From that point on, every time you glance at your phone you'll see a different word from your list along with its definition and grammar type. The widget refreshes in the background every 10 minutes without you doing anything. Build your own word lists: Lock Learn isn't tied to a preset word bank. You create topics for whatever you're working on: a language you're studying, industry terminology, SAT prep words, culinary terms, anything you want. Every entry includes a definition and a grammar label so you understand how to actually use the word, not just what it means. Tap to go deeper: Spot a word you want to explore? Tap the widget and Lock Learn opens directly to that word's topic so you can review, edit, or add related words. Free to start: You get up to 20 vocabulary words completely free, with no trial period and no expiration date. If you want more, a small one-time purchase unlocks unlimited words and there's no subscription. Features: - Lock screen widget that rotates vocabulary every 10 minutes - Organize words into topics and categories - Grammar labels included with every entry - Tap-to-open deep link goes directly to the word currently on your lock screen - Free up to 20 words, one-time purchase for unlimited

About

Math Daily

Features
Read full description

Five questions. One shared daily challenge. A sharper mind. Math Daily makes mental math a small, satisfying habit. Choose your starting point, answer your first five questions and let practice find your level. No account or long setup. THE DAILY FIVE Everyone in your level range gets the same five questions, in the same order. You get one attempt per day. Finish to see your number correct and completion time, then share a spoiler-free result with friends. Accuracy comes first; time breaks the tie. A new set arrives worldwide at midnight UTC. PRACTICE THAT FITS The curriculum uses 500 question patterns across 41 subjects, so addition and subtraction are only the starting point. Unlimited free foundation practice covers fourteen subjects, from multiplication and fractions to percentages, tips, discounts and everyday numbers. Choose five, eight or twelve questions. Your level adjusts from your answers; taking your time on a correct answer never counts against you. UNDERSTAND EVERY ANSWER Worked solutions explain the steps and useful shortcuts. They are always free. Skip a subject when you are not in the mood and see less of it without losing ability points. SIMPLE PROGRESS Your level describes difficulty. XP records effort. Your streak is simply the number of days you show up. Add a free small or medium Home Screen widget to see it at a glance and jump into practice. Optional reminders learn from your recent practice time, stop after you finish and ease off when you are away. Optional Game Center includes weekly and all-time world leaderboards. Free players can reach every rank; Pro practice earns 20% more XP. The Daily Five remains equal for everyone. MORE WITH MATH DAILY PRO • 27 advanced subjects, from algebra and graphs to calculus and decision theory, as your level grows. • Focused single-subject drills and Endless mode. • Full practice history. • 20% more ranked XP from practice and Endless. • Math before apps: choose individual apps inside Math Daily. A short question appears on the app shield; a correct answer opens it for 15 minutes. Requires Apple's Screen Time permission. Weekly, yearly and lifetime options are available. Any eligible annual free trial and its renewal price are shown before you subscribe. Manage or cancel subscriptions in your Apple account. QUIET BY DESIGN No ads, no account, no mascot. Practice, daily challenges and saved progress work offline. Purchases and Game Center need a connection. Questions, answers and private app-selection tokens stay on your device. Limited pseudonymous measurement records feature and aggregate session events; it never includes questions or answers. Privacy: https://www.nocteventures.com/daily-math/privacy/ Terms: https://www.nocteventures.com/daily-math/terms/ Support: hello@nocteventures.com

Screenshots

Lock Learn4 screens
Math Daily4 screens

Verdict

The call

Lock Learn and Math Daily 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lock Learn sells 1 one-off in-app purchase and Math Daily sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Lock Learn versus Math Daily: the parameters behind the verdict, then further details
ParameterLock LearnMath Daily
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.617.0 — better
Further details — not scored
Size3 MB13 MB
Age rating4+4+
DeveloperMaxQ Consulting Services LLCNocte Ventures Ltd

In-app purchases

1 purchases

Lock Learn

One-time1
  • LockLearn$1.99
3 purchases

Math Daily

Subscriptions2
  • Pro — Weekly$0.997 Days
  • Pro — Yearly7 Days trial$14.991 Year
One-time1
  • Pro — Lifetime$29.99

Questions

Is Lock Learn free?
Lock Learn is free to download, with in-app purchases available.
Is Math Daily free?
Math Daily is free to download, with in-app purchases available.
Do Lock Learn or Math Daily have ads?
Neither Lock Learn nor Math Daily shows ads.

Other comparisons