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Measured on six things

A calm Chinese idiom puzzle for iPhone: connect four touching tiles to spell a chengyu. Daily puzzle, 1,700+ levels, pinyin and definitions. No ads.

Security

HTTPS enforced with X-Content-Type-Options, Referrer-Policy and SPF in place, and no login means no credential store. But HSTS, CSP, frame protection and DMARC are all missing — 5/12 on the header checklist, and no published audit or security page.

Screenshots

1 / 1

成语拾光 (Idiom Shiguang)

About this app

A calm Chinese idiom puzzle for iPhone: connect four touching tiles to spell a chengyu. Daily puzzle, 1,700+ levels, pinyin and definitions. No ads. Made by MarcX Studio, an independent studio building small, focused apps for everyday tasks. Free to download on the App Store.

Key features

1Connect four touching character tiles in order to spell a four-character chengyu, with tiles clearing and falling like a match-3 board.
21,700+ campaign levels across chapters, plus a fixed daily puzzle with a seal-stamped streak calendar.
3Idiom collection saves every found idiom with pinyin and a Chinese definition for later review.
4No ads, no login, fully offline; home screen widget shows today's puzzle and streak.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Chinese language learners (beginner to intermediate)

Pain points

Memorizing chengyu feels tedious; lack of context and engaging practice.

Primary needs

Effective, enjoyable way to learn idioms with definitions and pinyin.

Demographic

Word puzzle enthusiasts

Pain points

Many puzzle games have ads or require internet; looking for fresh mechanics.

Primary needs

Offline, ad-free puzzle game with daily challenges and progression.

Demographic

Heritage speakers and Chinese culture fans

Pain points

Limited opportunities to maintain or improve idiom knowledge in a fun way.

Primary needs

Casual, culturally enriching game to reconnect with language.

Scout Review

Written by AI from measured evidence, scored out of 100.

成语拾光 is a well-executed niche puzzle: connect four touching tiles to spell a chengyu, with 1,700+ levels, a daily puzzle, a home screen widget and an idiom collection that stores pinyin and definitions. The app UI is calm and legible, the site explains the mechanic in three steps, and the no-ads/no-login/offline stance is a real differentiator against the ad-heavy competition. Weak points are a header checklist at 5/12, a 4.7s mobile LCP, two blank screenshot placeholders, and pricing hidden behind an install. It is early — v1.0 with no ratings yet — but the foundation is solid.

Measure by measure

Usability

Three numbered steps explain the mechanic in under ten seconds, and the free-first-5-chapters split is stated plainly. English menus plus pinyin and definitions lower the barrier for learners; no user reviews exist yet to confirm onboarding in practice.

Design

Judging the app UI and store material: rounded tile grid, connected-path highlight and stamped calendar read calm and literary. Homepage matches with cream palette and serif headline, though two blank screenshot cards break the rhythm.

Speed

Desktop Lighthouse 99/100 and mobile 79/100 with CLS 0 and TBT 37ms — snappy and stable. Mobile LCP of 4.7s is the one soft spot, likely a hero image; gameplay itself is offline so it never waits on a server.

Security

Accessibility

Lighthouse accessibility audit is a clean 100/100, the app ships in 3 languages and supports both Simplified and Traditional characters. Deductions for the small-text language toggle flagged in the visual audit and no published WCAG statement.

Growth

A real problem (chengyu memorization is tedious) with a specific wedge: the collection saves every idiom with pinyin and definition, so practice leaves a study artifact. Ad-free and offline counters the listed ad-heavy alternative directly.

Improvement areas

Security headers incomplete: no HSTS, CSP, frame protection or DMARC (5/12 checklist).
Mobile Lighthouse LCP of 4.7s drags the mobile performance score to 79/100.
Homepage Screenshots section contains two blank placeholder cards.
Plus pricing is not published on the site — visitors must install to see tiers.

Design & Usability

The app itself is the design story here, and it holds up: a 4x5 rounded tile grid, a connected-path highlight that makes the mechanic legible in one glance, and a daily calendar stamped in red. The homepage mirrors that calm with a cream palette and a serif headline that actually earns the literary tone. Usability is explained fast — three numbered steps, one sentence each — and the free-first-5-chapters split is stated without a maze. The gaps are small but real: two blank placeholder cards sit in the Screenshots section, and the pricing page punts all actual numbers into the app, so a curious visitor has to install before knowing what Plus costs.

Speed & Security

Speed is genuinely good on desktop (99/100) and acceptable on mobile (79/100) with zero layout shift and 37ms blocking time. The mobile LCP of 4.7s is the one number worth fixing — almost certainly the hero mockup image — but since the game itself plays offline, no player ever waits on it. Security is the weakest dimension: HTTPS is enforced and a few sensible headers are present, but HSTS, CSP, frame protection and DMARC are all absent, landing the header checklist at 5/12. The saving grace is architectural — no login, no account, no ads means there is no credential store and very little user data to protect. That lowers the stakes considerably, but the missing headers are still a fifteen-minute fix.

Accessibility & Growth

Accessibility scores a clean 100/100 on the automated Lighthouse audit, the app ships in three languages, and puzzles support both Simplified and Traditional characters — a meaningful inclusion for a Chinese-language product. The one visible flaw is a small-text language toggle in the top nav that would be awkward to tap on a phone. Growth is the more interesting question: chengyu memorization is a real, tedious problem, and the collection feature — every idiom saved with pinyin and a Chinese definition — turns play into a study artifact rather than a score. That is a genuine wedge against the listed alternative, which is ad-supported and social-first. The category has headroom among learners and heritage speakers, though the ceiling is a niche one.

Conclusion

If you are learning Chinese and chengyu keep sliding off, this is the rare puzzle game that leaves you with something after the session ends. The collection is the reason to stay. Fix the mobile hero image, fill in the two empty screenshot slots, publish the Plus prices on the site, and add the four missing security headers — none of those are hard, and all of them are the difference between 'nice indie app' and 'obvious download.'

Suggestions for improvement

Add HSTS, CSP, X-Frame-Options and DMARC — the header checklist is at 5/12 and all four are quick wins.
Compress the mobile hero image to pull LCP under 2.5s; desktop is already 99/100.
Remove or fill the two blank placeholder cards in the homepage Screenshots section.
Publish Plus pricing tiers on the site instead of deferring to 'shown in the app.'

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	成语拾光 (Idiom Shiguang)	成语猜猜看	Idiom Solitaire
Core mechanic	Connect four touching tiles in order to spell a chengyu	Idiom guessing with multiple puzzle types and social features	Idiom solitaire — match last character to first of the next idiom
Ads	None — explicitly ad-free	Includes ads	Not stated in provided details
Learning support (pinyin / definitions)	Every found idiom saved with pinyin and Chinese definition	Not stated in provided details	Not stated in provided details
Offline play	Yes — plays fully offline, no login	Not stated; social features imply connectivity	Not stated in provided details
Monetization	Free first 5 chapters; optional Plus monthly/yearly/lifetime	Ads plus in-app purchases	Not stated in provided details
Daily puzzle / progression	Daily puzzle with streak calendar, 1,700+ campaign levels, widget	Varied puzzle types; social features	Solitaire-style chain progression

成语猜猜看

A popular Chinese idiom guessing game with various puzzle types and social features. It includes ads and in-app purchases.

Idiom Solitaire

A classic idiom solitaire game where you connect idioms by matching the last character to the first of another. It offers a different twist on idiom learning.

Comparing options? See 成语拾光 (Idiom Shiguang) alternatives, scored side by side

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