Comparison

Open Book vs WorldChips

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

Head to head
About

Open Book

Features
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Open Book blocks adult content and the apps that pull you off track, using Apple's built-in Screen Time controls. You set it up, you manage it, and your choices stay on your iPhone. 30-DAY CHALLENGE Start a 30-day challenge from Home. Every day that blocking stays on with no pause counts as a kept day. See all 30 days at a glance, get a short note after days 7, 14, 21 and 30, and start over whenever you want. Your challenge is kept on your iPhone. NATIVE BLOCKING. NO VPN. Open Book uses Apple's Screen Time framework, not a VPN or traffic inspection. When blocking is on, Safari's adult-content filter turns on automatically. Use Apple's own picker to choose apps, app categories and websites to block. KEEP THE APPS YOU NEED Blocking a whole category? Add app exceptions so a work chat app or another app you rely on keeps working. SHORT PAUSES ON YOUR TERMS Need a break? Pause blocking for 15, 30 or 60 minutes. Blocking is scheduled to resume when the pause ends, and you can resume it sooner. iOS may delay the resume while your phone is idle. YOUR ACTIVITY, PRIVATELY The Activity tab lists when blocking started or stopped and when pauses began and ended. Filter it by type. It records event types and times only, never websites, app names or browsing history. WEEKLY RECAP Turn on the weekly recap from Activity to get a short notification each Sunday evening. It counts your pauses for the week and the days you had none. The recap is built on your iPhone from your Activity log. PRIVATE BY DESIGN Your blocking choices, activity log, challenge and recaps stay on your device. Open Book never sees your browsing and doesn't share your activity with anyone. To improve the app, it sends a few anonymous usage events, such as starting or finishing a challenge. They never include websites, app names or Screen Time data, and they aren't linked to your account. A minimal account, created without an email or password, supports purchase restore and account deletion. You can delete it anytime in Settings. YOU'RE IN CONTROL Stop blocking whenever you want, after a 30-second wait that gives an urge time to pass, unless you have started a Strict mode lock. You can also turn off Screen Time access in iPhone Settings at any time. Open Book is for managing your own iPhone. It is not a parental-monitoring tool. STRICT MODE (OPEN BOOK PLUS) Want a firmer commitment? Strict mode locks blocking for 1, 3, 7 or 30 days. Until the lock ends, Open Book won't stop blocking, pause, remove apps or add exceptions. You can also make stopping take longer: wait 5, 15 or 60 minutes instead of 30 seconds. Strict mode only limits Open Book's own controls. Turning off Screen Time access in iPhone Settings still ends all blocking at any time. Strict mode requires an Open Book Plus subscription, monthly or yearly. Everything else in Open Book is free. Payment is charged to your Apple ID. The subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel it in your App Store account settings. Restore a purchase in Settings > Account & subscription. Privacy Policy: https://useopenbook.com/privacy Terms of Use: https://useopenbook.com/terms Support: https://useopenbook.com/support

About

WorldChips

Features
Read full description

WorldChips is a community-built catalog for casino chip collectors โ€” catalog what exists, track what you own, and trade with collectors around the world. BUILD THE DATABASE TOGETHER Search a growing, shared database of casino chips from casinos worldwide โ€” Las Vegas, Atlantic City, Europe, and beyond. Can't find a chip? Add it yourself: pick the casino (or add it if it's missing), snap a photo of the front and back, and it's there for every collector to see. TRACK YOUR OWN COLLECTION Mark any chip as part of your collection with one tap. My Collection keeps everything organized and searchable, and shows each chip's Rarity score โ€” the fewer collectors who have it, the higher it scores. TRADE WITH OTHER COLLECTORS Got a spare? Mark it "Offering." Looking for one? Mark it "Looking for." The Trading tab shows everything currently available or sought across the whole community, and highlights your personal matches โ€” chips where someone else has exactly what you want, or wants exactly what you have. SEE HOW YOU RANK Compare yourself with other collectors: Most Chips, Top Contributors, Rarity, and Newest Members. Filter by your own circle to see how you stack up against people you follow. CONNECT WITH COLLECTORS Follow other collectors, message them directly, and check out anyone's full profile โ€” their collection, and what they're offering or looking for. WHY WORLDCHIPS Casino chips are a beloved corner of collecting, but scattered across forums, old spreadsheets, and word of mouth. WorldChips brings it into one place โ€” a living, growing catalog built by the people who actually collect. Free to use. No ads. Sign in with Google or Apple in seconds.

Screenshots

Open Book4 screens
WorldChips4 screens

Verdict

The call

The clearest difference is in-app purchases: WorldChips at none against Open Book's 2. On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Open Book sells 2 in-app purchases, starting at $9.99 per month. WorldChips asks for nothing beyond the download.

UpkeepUpdate frequency

Open Book ships an update every 3 days, WorldChips every 4 days. Both last shipped on October 29, 2026.

Scorecard1 real difference ยท 5 level
Open Book versus WorldChips: the parameters behind the verdict, then further details
ParameterOpen BookWorldChips
PriceFreeFree
Update frequencyEvery 3 days โ€” betterEvery 4 days
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.0 โ€” better17.6
Further details โ€” not scored
Size10 MB12 MB
Age rating4+4+
DeveloperReno Labs, LLCGerard Pons Mas

In-app purchases

2 purchases

Open Book

Subscriptions2
  • Open Book Monthly$9.991 Month
  • Open Book Annual14 Days trial$59.991 Year
None

WorldChips

No in-app purchases

Questions

Is Open Book free?
Open Book is free to download, with in-app purchases available.
Is WorldChips free?
WorldChips is free to download, with no in-app purchases.
Do Open Book or WorldChips have ads?
Neither Open Book nor WorldChips shows ads.
Which is updated more often, Open Book or WorldChips?
Open Book ships an update every 3 days, and WorldChips every 4 days. Most recently, Open Book was updated on October 29, 2026 and WorldChips on October 29, 2026.

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