Revisit the words in your life and become fluent.

Frequency Wordbook was made for personal development with features that facilitate flexibility in learning new words in your life.


Make Lists
Capture and organize the words in your life into lists such as work-related (Work), class-related (Biology/Economics/etc.), or travel-related (Thai Phrases). Make lists active for testing, or archive them for later.

Dynamic Lists
Hide the definition text for memory recall during review (force-press the word to reveal the hidden definition text),
Flip the word entry to show the definition text as the primary word to do reverse definition-word recollection,
Shuffle the list to learn the words in randomized order,
Archive word entries to remove memorized words from Active Lists, or
Move word entries to another/new list for focused learning.

Dynamic Testing
Test with varying time limits, number of questions per session, reverse questioning, and hiding or displaying supplemental subtexts for additional review. Each test delivers randomized word entry questions. Apply your own spaced repetition learning by revisiting tests at later intervals.
This version does not automate spaced repetition techniques - left up to the user to apply their own comfort learning schedules.
The main Drill tab page will test you on all Active lists. For testing on a single list, simply navigate to the Manage Lists page and select your list (Drill button) for testing.

iCloud Backup
Option to store your lists into your iCloud account to maintain your created lists across multiple devices.

Language Options
App usability and user interface offered in multiple languages:
English, Japanese, Chinese (simplified), French, German, Italian, and Spanish.

In-App Upgrades
Expand Word Entry Limit - free version allows up to 100 word entries. Upgrading removes the limit for unlimited word entries. Also, unlocks some pre-built lists for avid learners.
Unlock Test Settings - free version provides default 10 questions - 1 minute testing. Unlocking the Test Settings allows the user to adjust the test time limit, changing the number of questions per test session, reversing the question word as the definition word, and displaying/hiding supplemental or subtext keywords.
Remove Ads - free version will display an interstitial ad after a test has completed and if the test score is less than 80% mark. Great test performance keeps your app ad-free, or simply upgrade your app by removing ads.

Any upgrades are greatly appreciated, as is any feedback.

Thank you.

What’s New

Version 3.4

CloudKit stability and handling fixes.
UI bug fix on Drill for larger screens.

Ratings and Reviews

5.0 out of 5
4 Ratings

4 Ratings

Bumblee Tuna ,

Wahoo! An app that’s super practical and intuitive just as Apps are intended!

I am very impressed with this app. I’m not a fan of actual Apps in general as I find them to be more time-consuming than what is actually useful for everyday living.

That said, I have found this App has blended nearly seamlessly into my habit to build my vocabulary. The best part is it’s so easy, effortless, and intuitive which makes it enjoyable and fun to use. You feel productive because of the ease of using something that is actually helping you!!! ie, in this case, learning/reviewing words. It couldn’t be more straightforward and as a result makes it easy to build into everyday/frequent* use. pun-intended ;)

We all love a brilliantly designed, intuitive, effective tool or service which ENHANCES our experience and Frequency is truly that for all language learners either native or foreign. The best part is that I’m personally using this for words in my native tongue but this is originally designed for those learning a new language. The same could very easily go for anyone trying to learn or review terms, theories, concepts etc in a very systematic way.

Simply brilliant! You won’t regret the luxury it brings to your life and mind ;)


Sagen Johnson
9.4 MB

Requires iOS 13.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Expand Entry Limit $0.99
  2. Unlock Test Settings $1.99
  3. Remove Ads $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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