Comparison

Simple Wordbook vs PomoTrain

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

Head to head
About

Simple Wordbook

Features
Read full description

It contains about 3000 practical Japanese words that you can use immediately. Swipe to move back and forth between words, and flip to flip front and back. You can share or import the word data, so make your own wordbook. Features About 3,000 English words are already registered. Register, edit, and delete word data Auto Play Reading out loud function Share word data Import of word data Dark mode support

About

PomoTrain

Enhance your focus with a unique timer that blends the Pomodoro Technique with a virtual train journey across Japan. Complete focus sessions to advance through real railway routes, explore stations with Street View during breaks, and enjoy immersive ambient sounds. Gamified elements like collecting stamps and bento boxes keep you motivated.

Highlights
  • Virtual Japanese railway routes
  • Pomodoro Technique timer
  • Station exploration with Street View
  • Immersive ambient sounds
  • Collect station stamps and bento boxes
  • Daily focus logs and streak tracking
Features
Read full description

ā–  Every time you focus, a train departs. PomoTrain is a completely new kind of focus timer that combines the Pomodoro Technique with a virtual rail journey across Japan. When your focus session begins, the train departs. During breaks, you arrive at real stations and can explore the surroundings with Look Around and Street View. Travel iconic Japanese railway lines while staying effortlessly focused. FEATURES ā–¶ Real Japanese Railway Routes Ride the Yamanote Line, Chuo Line, Keihin-Tohoku Line, and more. Each station is faithfully recreated — advance to the next one every time you complete a focus session. ā–¶ Pomodoro Technique Built In 25-minute focus + 5-minute break cycles, backed by science. Customize both focus and break durations to match your workflow. ā–¶ Explore Stations During Breaks Enjoy Look Around and Google Street View at each station you arrive at. Recharge with a mini virtual trip. ā–¶ Immersive Ambient Sounds Mix train sounds, rain, thunder, and more. Weather-sync mode automatically matches sounds to real conditions. ā–¶ Collect Stamps & Ekiben Earn station stamps and collect bento boxes as you travel. Build your collection with every session. ā–¶ Track Your Focus Automatic daily logs and streak tracking keep you motivated to maintain your focus habit. PERFECT FOR - Students and professionals who want to stay focused - Anyone interested in the Pomodoro Technique - Train and travel enthusiasts - People who love gamified productivity Grab your ticket and depart. Terms: https://focus-train.vercel.app/terms-of-service Privacy: https://focus-train.vercel.app/privacy-policy

Screenshots

Simple Wordbook1 screens
PomoTrain4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Wordbook at none against PomoTrain's 4. Simple Wordbook also leads on iOS requirement (14.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. PomoTrain sells 4 in-app purchases, starting at $3.99 per month. Simple Wordbook asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Wordbook ships an update every 5 days, PomoTrain every 4 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences Ā· 6 level
Simple Wordbook versus PomoTrain: the parameters behind the verdict, then further details
ParameterSimple WordbookPomoTrain
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 5 daysEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.1 — better17.0
Further details — not scored
Size1 MB303 MB
Age rating4+4+
Developereventcast inc.Tatsuya Kawauchi

In-app purchases

None

Simple Wordbook

No in-app purchases

4 purchases

PomoTrain

Subscriptions2
  • Pro Montyly$3.991 Month
  • Pro Yearly7 Days trial$11.991 Year
One-time2
  • Pro Lifetime 24$14.99
  • Pro Lifetime$29.99

Questions

Is Simple Wordbook free?
Simple Wordbook is free to download, with no in-app purchases.
Is PomoTrain free?
PomoTrain is free to download, with in-app purchases available.
Do Simple Wordbook or PomoTrain have ads?
Neither Simple Wordbook nor PomoTrain shows ads.
Which is updated more often, Simple Wordbook or PomoTrain?
Simple Wordbook ships an update every 5 days, and PomoTrain every 4 days. Most recently, Simple Wordbook was updated on November 3, 2026 and PomoTrain on November 5, 2026.

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