Comparison

Pebble Core vs Quick Learn Japanese

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

Head to head
About

Pebble Core

Manage your smartwatch, customize settings, and explore a variety of watchfaces and apps. Sync health data, control notifications, and update firmware. Supports a wide range of smartwatch models.

Highlights
  • Bluetooth pairing
  • Watchface and app gallery
  • Firmware updates
  • Notification control
  • Health data sync
  • Developer tools
Read full description

Pebble Core is the official iPhone app for managing your Pebble smartwatch, Pebble Index 01 ring and other Core Devices products. Pair your watch and/or ring, customize your settings, and discover a growing ecosystem of watchfaces, apps, and tools designed for your device. Features include: • Bluetooth pairing and reconnection • Watchface and app gallery browsing • Firmware updates and bug reporting • Notification control and preferences • Health data sync (steps, sleep, heart rate*) • Developer tools for sideloading and debugging This app supports all Core Devices smartwatches (Pebble 2 Duo, Pebble Time 2, Pebble Round 2), Pebble Index 01 ring, and older Pebble models (Pebble, Pebble Steel, Pebble Time, Time Steel, Time Round, and Pebble 2) Built for long battery life, fast sync, and full compatibility. This app is open source - https://github.com/coredevices/mobileapp.

About

Quick Learn Japanese

Features
Read full description

Study new characters, review what is due, search words quickly, and generate short Japanese stories that turn your target kanji into reading practice. The app is built for learners who want a practical path through Japanese instead of a pile of disconnected flashcards. KANJI AND VOCAB SEARCH Look up kanji and vocabulary by Japanese, kana, or English. Filter kanji by JLPT level, grade, stroke count, and radicals, then open details with readings, meanings, components, examples, and related vocabulary. SPACED REPETITION REVIEWS Reviews use a lightweight SRS system so cards come back when they need attention. Your daily queue focuses on due kanji and vocabulary, with progress saved to your account. LEARN NEW MATERIAL Add new kanji and vocabulary into your deck from search, stories, or guided learning sessions. Quick Learn Japanese keeps your study deck organized so you can return to it anytime. AI-GENERATED READING PRACTICE Create short Japanese stories by level and theme. Stories can target your JLPT level or study profile, include furigana and English support, and can be turned into flashcards for review. KANA PRACTICE Practice hiragana and katakana from a dedicated kana hub. Build recognition and writing confidence before moving deeper into kanji and vocabulary. TODAY AND STATS See your daily study goal, streak, XP, review accuracy, and recent study momentum. Adjust goals, review size, and story display settings from your profile. SYNCED ACROSS DEVICES Sign in with email, Google, or Apple to keep progress synced through Firebase. Offline persistence helps keep study data available when connectivity is unreliable. Quick Learn Japanese is free to start. A Pro subscription unlocks unlimited story generation and removes ads. Terms of Use: https://rightcode.app/qlj/terms Privacy Policy: https://rightcode.app/privacypolicy

Screenshots

Pebble Core4 screens
Quick Learn Japanese4 screens

Verdict

The call

The clearest difference is in-app purchases: Pebble Core at none against Quick Learn Japanese's 3. Quick Learn Japanese's advantage is update cadence (every 4 days vs every 11 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Quick Learn Japanese sells 3 in-app purchases, starting at $2.99 per month. Pebble Core asks for nothing beyond the download.

UpkeepUpdate frequency

Pebble Core ships an update every 11 days, Quick Learn Japanese every 4 days. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Pebble Core versus Quick Learn Japanese: the parameters behind the verdict, then further details
ParameterPebble CoreQuick Learn Japanese
PriceFreeFree
Rating4.5 (72 ratings) — better—
Positive reviews70.5% of reviews—
Number of ratings72 — better—
Update frequencyEvery 11 daysEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.6
Further details — not scored
Size160 MB169 MB
Age rating12+4+
DeveloperCore Devices LLCHarish Kumar

Bugs and requests

Pebble Core

Reported bugs

1 issue
  • None mentioned

Requested features

1 request
  • Standard email registration option

Quick Learn Japanese

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Pebble Core

No in-app purchases

3 purchases

Quick Learn Japanese

Subscriptions2
  • Unlimited Access$2.991 Month
  • QLJ Pro Yearly$24.991 Year
One-time1
  • 5 Story Credits$0.99

Questions

Is Pebble Core free?
Pebble Core is free to download, with no in-app purchases.
Is Quick Learn Japanese free?
Quick Learn Japanese is free to download, with in-app purchases available.
Do Pebble Core or Quick Learn Japanese have ads?
Neither Pebble Core nor Quick Learn Japanese shows ads.
Which is updated more often, Pebble Core or Quick Learn Japanese?
Pebble Core ships an update every 11 days, and Quick Learn Japanese every 4 days. Most recently, Pebble Core was updated on October 19, 2026 and Quick Learn Japanese on October 7, 2026.

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