Sell books with World of Books Downloads & RevenueSell books with World of Books · App Store & Google Play
Sell books with World of Books by Ziffit.com is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
Sell books with World of Books update history & changes
Last change · 11 events since 12 Jun 2019Full timeline ↓⭐iOSPassed 10K ratings📈AndroidDropped out of every chart we track📦iOSUpdated to version 7.4.0📦iOSUpdated to version 7.3.0🆕AndroidFirst spotted by AppInsider📦AndroidVersion 7.2.0 (#17562)🆕iOSFirst spotted by AppInsider🆕iOSReleased on the App Store🆕AndroidReleased on Google Play
Full timeline · 11 events
- 📈Sell books with World of Books dropped out of every chart we trackAndroidLast seen 3 Nov
- 📦Sell books with World of Books updated to version 7.4.0iOSWe've updated the app with some new features and improved stability and performance.
- 📦Sell books with World of Books updated to version 7.3.0iOSWe've updated the app with some new features and improved stability and performance.
- 🆕Sell books with World of Books first spotted by AppInsiderAndroidUnited States
- 📦Sell books with World of Books updated to version 7.2.0iOSWe've updated the app with some new features and improved stability and performance.
- 📦Sell books with World of Books version 7.2.0 (#17562)AndroidWe've updated the app with some new features and improved stability and performance.
- 🆕Sell books with World of Books first spotted by AppInsideriOS#51 in Top Free · Lifestyle · United States
- 📦Sell books with World of Books version 7.1.0iOSWe've updated the app with some new features and improved stability and performance.
- 🆕Sell books with World of Books released on the App StoreiOS
- 🆕Sell books with World of Books released on Google PlayAndroid
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
12k ratings, both stores
Measured
Best rank now
#183
App Store · 
Lifestyle Free
Lifestyle FreeMeasured
New ratings a week
219
steady vs the 2 weeks before
Measured
App Store
App details
App ID
1450826468
Publisher
Ziffit LTD
Publisher country
United Kingdom
On the store since
Jun 2019
7 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
120 MB
Also listed in
Books
Google Play
App details
App ID
uk.co.brightec.ziffit.us
Publisher
WORLD OF BOOKS GROUP LTD
Publisher country
United Kingdom
Content rating
Everyone
Sell books with World of Books downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | – |
| Google Play | – | 100k+ Measured |
| Total | – | 100k+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where Sell books with World of Books's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #183 Lifestyle Free | 1 of 30 countries | #183 | – |
| Google Play | – | 0 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisNew ratings a week
219
steady vs the 2 weeks before
Recent ratings
4.8★
vs 4.8★ lifetime
Review momentum
83/100
faster than 95% of Lifestyle apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.8 ★ | 10k |
| Google Play | 4.2 ★ | 1.6k 951 written reviews |
| Both stores | 4.7 ★ weighted by ratings | 12k |
About Sell books with World of Books
The Sell books with World of Books app makes it easy to earn extra money and declutter your home. Download the free app (previously known as Ziffit) to turn your used books and textbooks into cash.
• Sell books or textbooks instantly
• Scan barcodes with your iPhone or iPad
• Get an instant quote and complete your trade
• Ship your books for free with FedEx or USPS
• Receive quick payments directly to your bank or PayPal account
With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.
Curious about the value of your book collection? The app can tell you that, too.
The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
• Sell books or textbooks instantly
• Scan barcodes with your iPhone or iPad
• Get an instant quote and complete your trade
• Ship your books for free with FedEx or USPS
• Receive quick payments directly to your bank or PayPal account
With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.
Curious about the value of your book collection? The app can tell you that, too.
The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
Sell books with World of Books App Store
Sell books with World of Books is #183 in Lifestyle Free in United States and charting in 1 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperZiffit.com
CategoryLifestyle
PriceFree
Released
Rating★ 4.8 (10k)
Version7.4.0
Age rating4+
First seen by us 26 Sep 2026
26 Sep 2026Rating
4.8 ★
10k ratings
Measured
Best rank now
#183
Lifestyle FreeMeasured
New ratings a week
219
steady vs the 2 weeks before
Measured
Sell books with World of Books on the App Store
App details
App ID
1450826468
Publisher
Ziffit LTD
Publisher country
United Kingdom
On the store since
Jun 2019
7 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
120 MB
Also listed in
Books
Sell books with World of Books downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Sell books with World of Books's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | LifestyleFree | #183 |
Apps near Sell books with World of Books on the chart
Lifestyle Free, around #183.
Ratings
App Store, worldwide.
Rating
4.8 ★
10k ratings
Measured
Ratings
10k
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
219
steady vs the 2 weeks before
Recent ratings
4.8★
vs 4.8★ lifetime
Review momentum
83/100
faster than 95% of Lifestyle apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Sell books with World of Books
The Sell books with World of Books app makes it easy to earn extra money and declutter your home. Download the free app (previously known as Ziffit) to turn your used books and textbooks into cash.
• Sell books or textbooks instantly
• Scan barcodes with your iPhone or iPad
• Get an instant quote and complete your trade
• Ship your books for free with FedEx or USPS
• Receive quick payments directly to your bank or PayPal account
With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.
Curious about the value of your book collection? The app can tell you that, too.
The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
• Sell books or textbooks instantly
• Scan barcodes with your iPhone or iPad
• Get an instant quote and complete your trade
• Ship your books for free with FedEx or USPS
• Receive quick payments directly to your bank or PayPal account
With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.
Curious about the value of your book collection? The app can tell you that, too.
The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
Latest updates
7.4.0
We've updated the app with some new features and improved stability and performance.
7.3.0
We've updated the app with some new features and improved stability and performance.
7.2.0
We've updated the app with some new features and improved stability and performance.
More from Ziffit.com
Sell books with World of Books Android
Not in a tracked Google Play top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperWorld of Books
CategoryLifestyle
PriceFree
Released
Installs100k+
Rating★ 4.2 (1.6k)
Updated
Content ratingEveryone
Rating
4.2 ★
1.6k ratings
Measured
Sell books with World of Books on Google Play
App details
App ID
uk.co.brightec.ziffit.us
Publisher
WORLD OF BOOKS GROUP LTD
Publisher country
United Kingdom
Content rating
Everyone
Sell books with World of Books downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where Sell books with World of Books's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Not in a Google Play top chart right now. | ||
Ratings
Google Play, worldwide.
Rating
4.2 ★
1.6k ratings
Measured
Ratings
1.6k
Measured
Written reviews
951
Measured
About Sell books with World of Books
The Sell books with World of Books app makes it easy to earn extra money and declutter your home. Download the free app (previously known as Ziffit) to turn your used books and textbooks into cash.
• Sell books or textbooks instantly.
• Scan barcodes with your phone or tablet
• Get an instant quote and complete your trade.
• Ship your books for free with FedEx or USPS.
• Receive quick payments directly to your bank or PayPal account.
With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.
Curious about the value of your book collection? The app can tell you that, too.
The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
• Sell books or textbooks instantly.
• Scan barcodes with your phone or tablet
• Get an instant quote and complete your trade.
• Ship your books for free with FedEx or USPS.
• Receive quick payments directly to your bank or PayPal account.
With the Sell books with World of Books app, you can quickly and easily sell your used books. Simply scan barcodes, receive a quote, and complete the trade.
Curious about the value of your book collection? The app can tell you that, too.
The app is completely free, with no costs at any stage. Shipping is covered, and payments are completed within days—not weeks. Download the Sell books with World of Books app today and start selling whenever and wherever you like. Plus, first-time traders receive an extra 10% on their initial trade!
What's new in 7.2.0 (#17562)
We've updated the app with some new features and improved stability and performance.