Focus vs 釉式Yushiki
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Focus
Enhance your browsing with a customizable video player, powerful ad blocker, and advanced reading tools. Enjoy hands-free page turning, web translation, and script support for a personalized online experience.
- Customizable video player
- Userscript support (JavaScript, Tampermonkey)
- Advanced reading mode
- Hands-free auto page turning
- Powerful ad blocking
- Web translation
- Bookmark syncing
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【Video Mode】 Customizable player supporting floating video, playback speed control, picture-in-picture, DLNA and AirPlay casting, and one-click screen lock. 【Userscripts】 Supports both JavaScript and Tampermonkey 5.3.0 syntax. After years of user feedback, Focus has greatly improved compatibility with various scripts, ensuring more scripts run smoothly on Focus. 【Reading Mode】 The best reading mode on iOS, supporting automatic preloading of the next page, font size, line height, margin adjustments, and webpage theme selection. Supports text filtering and regular expression rule filtering. 【Auto Page Turning】 Hands-free page turning for novels, comics, or forums. Supports search engines like Baidu, Google, Bing, and Yandex. Try it out now! 【Redirect Blocker】 Can block malicious app redirects within webpages. 【Custom Homepage】 Add your favorite websites to the homepage and set a personalized browser homepage. 【Web Translation】 Super fast translation, making it easy to understand any webpage and breaking down language barriers. 【Ad Blocking】 Powerful ad-blocking feature supporting AdBlock Plus and AdGuard syntax. Includes ad tagging, webpage blacklists, and custom ad rules. 【Bookmark Sync】 Import bookmarks from Safari, Chrome, and Alook into Focus and export Focus bookmarks to those browsers, ensuring seamless bookmark syncing. 【URL Scheme】 Open URLs via Shortcuts: FocusBrowser://search?url=search term or link. 【Other Features】 Supports iPad, iCloud bookmark sync, dark mode, incognito mode, ad marking mode, fingerprint/FaceID login, feedback, and full-screen mode. 【Privacy & Security】 Focus respects your privacy. Incognito mode doesn’t save browsing history, cache, or cookies.
釉式Yushiki
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Yushiki turns a glaze recipe into the numbers potters actually reason with. Type in your materials and amounts, and it instantly shows the Seger (unity) formula with the bases normalized to 1, the SiO2/Al2O3 ratio, and where the glaze lands on the Stull chart. Everything in the core app runs fully offline on your device. Built for potters and ceramicists who mix their own glazes and want to understand what a recipe is doing, not just follow it. CORE FEATURES (FREE, OFFLINE) - Recipe to formula: enter materials and weights to get the Seger unity formula, silica-to-alumina ratio, and a live position on the Stull chart. - Materials database: representative analyses are built in, and you can edit entries or add your own. - Colorant reference: how iron, copper, cobalt and others develop across different addition levels, with oxidation vs. reduction differences and notes to watch for. - Firing log: record firing date, cone/SK, atmosphere, your rating, photos and notes. Each logged firing adds a point to the Stull chart, so your records grow into a map of your own kiln over time. - Comparison Lab: compare 2–6 firing logs against a reference using photos, saved recipes, formula metrics, estimated expansion, firing/application conditions, and ratings; includes a Stull overlay, A4 comparison PDF, and recipe adoption. - Complete backup: export and restore recipes, materials, experiments, firing logs, and photos in one archive. - Sharing: share a recipe as text, or export a card image with the formula and chart included. PRO FEATURES (SUBSCRIPTION) - Reverse solver: work backward from a target formula to a set of material amounts. - Experiment ledger and Next Experiment: saved line/triangle blends, kiln runs, test pieces, and small 3–5 test plans grounded in your own records. - Recipe comparison: place recipes side by side to compare formula differences and thermal expansion. - CSV and Japanese OCR import: read analysis tables or paper recipes and confirm every material and amount before saving. - Material analysis versions: manage suppliers, lots, and analysis history. - iCloud Sync: sync through your private Apple CloudKit database only after you explicitly turn it on. - GPT review: submit a firing photo for analysis and suggestions for an adjusted recipe. PRIVACY Your recipes, materials, firing logs and photos are stored on-device by default. A Pro subscriber can explicitly enable iCloud Sync, which also stores this app data in their private Apple CloudKit database. There is no account or sign-in, and no third-party analytics, tracking, or crash-reporting SDK. When you tap to generate a GPT review, a recipe-derived composition summary, up to one firing photo, and a StoreKit-signed transaction used to verify the Pro subscription are sent to the developer's Cloudflare Workers. The transaction is checked with Apple and is not sent to OpenAI; only the composition summary and optional photo are forwarded to OpenAI. The app does no cross-app or cross-site tracking. Thermal-expansion estimates and AI insights are meant as relative guides for comparing recipes, not guaranteed absolute values. Actual firing results vary with your materials, clay body, and firing conditions. SUPPORTED DEVICES iPhone / iPad (iOS 17+ / iPadOS 17+). The interface can be switched between Japanese and English in-app (technical data such as raw-material names remains in Japanese). SUBSCRIPTION Yushiki Pro is available as a monthly subscription at 400 yen or a yearly subscription at 3,000 yen, each with a 7-day free trial. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase. TERMS OF USE (EULA) Subscriptions are subject to Apple's standard Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Focus at 13.0 against 釉式Yushiki's 17.0. On price, update cadence, ads and in-app purchases 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. Focus sells 1 one-off in-app purchase and 釉式Yushiki sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Focus ships an update every 3 weeks, 釉式Yushiki every 2 weeks. The most recent releases landed on September 26, 2026 and September 7, 2026 respectively.
| Parameter | Focus | 釉式Yushiki |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (4.9K ratings) — better | — |
| Positive reviews | 53.8% of reviews | — |
| Number of ratings | 4.9K — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 13 MB |
| Age rating | 17+ | 4+ |
| Developer | 庆彬 邓 | Kouji Someura |
Bugs and requests
Focus
Reported bugs
3 issues- Incompatibility with certain websites
- Inconsistent script performance
- Inability to export bookmarks
Requested features
4 requests- Add mute tab button
- Implement desktop mode
- Improve video playback controls
- Restore video download feature
釉式Yushiki
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Focus
- Pro Lifetime$4.99
釉式Yushiki
- Yushiki Pro7 Days trial$1.991 Month
- Yushiki Pro (Yearly)7 Days trial$19.991 Year









