Vocab Vault Pro vs Lock Learn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vocab Vault Pro
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Transform your lock screen into a powerful vocabulary learning tool! Vocab Vault Pro uses your iPhone's lock screen to help you learn new words naturally throughout your day. Every time you check your phone, you'll see a new vocabulary word with its translation - making learning effortless and effective. KEY FEATURES: Lock Screen Widget • Words appear automatically on your lock screen • Learn while checking the time or notifications • No need to open the app Spaced Repetition System • Smart algorithm shows words at optimal intervals • Focus on words you need to practice • Proven learning method for long-term retention 5 Languages Available • English, French, German, Spanish, Italian • 900–2,000 curated words per language • A1 to C2 difficulty levels (CEFR) Track Your Progress • See your learning statistics • Monitor your vocabulary growth • Stay motivated with clear progress Simple & Effective • Clean, distraction-free interface • Available in English and Turkish • Start learning in seconds WHY VOCAB VAULT PRO? Most language apps require you to set aside dedicated study time. Vocab Vault Pro is different - it integrates learning into your daily routine. Since you check your phone dozens of times per day, each glance becomes a micro-learning opportunity. The spaced repetition algorithm ensures you see each word at the perfect moment for maximum retention. Words you struggle with appear more frequently, while words you know well appear less often. PERFECT FOR: • Language learners of all levels • Busy people who want to learn efficiently • Students preparing for exams • Anyone building vocabulary in a new language Download Vocab Vault Pro today and turn every phone check into a learning opportunity!
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.
- Lock screen vocabulary widget
- Customizable word lists by topic
- Definitions and grammar labels
- Tap to view word details
- One-time purchase for unlimited words
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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
Screenshots
Verdict
The clearest difference is in-app purchases: Vocab Vault Pro at none against Lock Learn's 1. Lock Learn's advantage is update cadence (every 2 days vs every 5 days). On price, ads, 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. Lock Learn sells 1 one-off in-app purchase. Vocab Vault Pro asks for nothing beyond the download.
Vocab Vault Pro ships an update every 5 days, Lock Learn every 2 days. The most recent releases landed on September 30, 2026 and October 19, 2026 respectively.
| Parameter | Vocab Vault Pro | Lock Learn |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 5 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 9 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Omer Cavuslu | MaxQ Consulting Services LLC |
In-app purchases
Vocab Vault Pro
No in-app purchases
Lock Learn
- LockLearn$1.99








