# Souki - Paper Workbook Review — Spaced repetition planner

> Spaced repetition planner (iPhone/iPad app by Syunya Saruwatari.)

- Source: https://appshunter.io/ios/app/souki-paper-workbook-review/id6814663640 (this page in markdown: same URL + `.md`)
- Developer: [Syunya Saruwatari](https://appshunter.io/developer/1895878983)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 31 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-09-23
- Data updated: 2026-10-26

## What is Souki?

Souki is a review planner for paper workbooks, textbooks and past exams.

You don't type in questions or take photos. Just register which book, which page, which number - and Souki schedules the next review automatically based on how well you did.

WHO IT'S FOR
- Professionals working through certification workbooks
- Students preparing for entrance exams with past papers
- Anyone memorizing with paper vocabulary books

HOW IT WORKS
1. Register your materials and problem numbers (add ranges like 1-30 in one go)
2. Solve today's problems on paper
3. Rate each one: Again / Hard / Good / Easy

The better you remember, the longer the gap until the next review (spaced repetition). Only today's problems show up, so you never wonder what to study.

MADE FOR PAPER
- Page-order sessions: minimal page flipping
- Set an exam date and reviews never get scheduled past it
- Track why you got it wrong (careless mistake, not memorized...) and analyze weak spots
- Home Screen widget shows what's left today

FREE
- Up to 3 books / unlimited problems and reviews
- Range input, exam dates, reminders, widget, backup

PREMIUM (monthly / yearly / lifetime)
- Unlimited books, search & filters, tags, full statistics, CSV import, iCloud sync, alternate app icons

Redoing problems is where learning happens. Souki handles all the scheduling.

TERMS OF USE AND PRIVACY
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://momokusafarm-pixel.github.io/souki-privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Yearly | $9.99 | per year |
| Premium Monthly | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium Lifetime | $19.99 | one-time |


## Is Souki safe?

Not enough ratings yet to assess Souki.

## Is Souki legit?

Souki - Paper Workbook Review appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Souki is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.1.2 — 2026-10-25

- Minor improvements and stability fixes

### 1.1.1 — 2026-10-17

- Stability improvements and minor fixes

### 1.1.0 — 2026-10-09

- Added Spanish, Portuguese (Brazil), Chinese (Simplified and Traditional) and Korean, for a total of 10 languages. The app follows your device language automatically
- Improved the German, French and Italian translations
- The Home Screen widget is now available in all 10 languages
- Minor improvements

### 1.0.2 — 2026-10-04

- You can now swipe right from anywhere on the screen to go back
- Fixed: tapping a notification now opens today's reviews
- The first review date when adding or editing a question now uses the same wheel picker as other dates
- Minor improvements

### 1.0.1 — 2026-09-26

- You can now save the CSV template as a file (open it in Numbers or Excel, add rows, and export as CSV to import it as is)
- Statistics can now be viewed per material and per chapter (pick a material in the Statistics tab, or tap the button at the top right of a material)
- With an exam date set, reviews no longer pile up right before the exam (reviews that would fall after the exam are moved to the midpoint; within the last 2 weeks, well-known questions wait until after the exam)
- Weak spots now clear automatically after 3 correct answers in a row and can be toggled by hand; "Priority" order starts with weak spots
- Questions rated "Hard" now always come back the next day
- The Today screen now remembers your sort order (Page order / Priority)
- Editing the page or chapter during a review now saves as soon as you tap outside the field (the "Saved" notice no longer covers the buttons)
- You can now switch to the yearly or lifetime plan from the Premium screen while subscribed
- Added a "Manage subscription" button on the Premium screen (opens App Store subscription settings)
- Improved how notification permission is requested
- Minor improvements

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## More apps by Syunya Saruwatari

- [Habitile - Habit Tracker](https://appshunter.io/ios/app/habitile-habit-tracker/id6764686513)
- [Eventick - Countdown & Events](https://appshunter.io/ios/app/eventick-countdown-and-events/id6766795134)
- [FindMemo - Notepad & Search](https://appshunter.io/ios/app/findmemo-notepad-and-search/id6774867969)
- [PaperPlanner - Planner & To-Do](https://appshunter.io/ios/app/paperplanner-planner-and-to-do/id6781217959)
- [Pomonote - Pomodoro Timer](https://appshunter.io/ios/app/pomonote-pomodoro-timer/id6793130617)
- [TabCalc - Calculator with Tape](https://appshunter.io/ios/app/tabcalc-calculator-with-tape/id6794603440)

All apps by Syunya Saruwatari: https://appshunter.io/developer/1895878983

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-26.*