# Koki Flashcards vs Onki

The clearest difference is ads: Onki at none against Koki Flashcards's shown. Onki also leads on monetization model (free vs free with in-app purchases) and review sentiment (100% vs 86%). Koki Flashcards's advantage is ratings volume (343 vs 4) and update cadence (every 9 days vs monthly). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. Koki Flashcards sells 14 in-app purchases, starting at $2.99 per month and Onki sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Onki holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Koki Flashcards has 343 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 86% of Koki Flashcards's written reviews are positive against 100% of Onki's.

Koki Flashcards ships an update every 9 days, Onki monthly. Both last shipped on October 21, 2026.

## The numbers

| Metric | Koki Flashcards | Onki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (343 ratings)](https://appshunter.io/ios/app/koki-flashcards-srs-study/id6451835020/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/onki/id6757570439/reviews)** |
| Number of ratings | **343** | 4 |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 94 MB | 11 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [KOKI SOFTWARE](https://appshunter.io/developer/1858441233) | [OLADIPUPO OLATIMILEYIN OGUNDIPE](https://appshunter.io/developer/1867648132) |

## What reviewers say

### Koki Flashcards

[App page](https://appshunter.io/ios/app/koki-flashcards-srs-study/id6451835020)

Master vocabulary with a smart, spaced repetition system. This multilingual flashcard app aids long-term memory retention through personalized review schedules, multimedia content, and custom card creation. Study languages effectively for exams or daily communication.

**Highlights:** Spaced Repetition System (SRS), Ready-to-use vocabulary decks, Multimedia flashcards (images, audio, examples), Custom flashcard creation, Personalized review schedules, Offline study mode, Cross-device synchronization

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription monthly | $2.99 | per month |
| Subscription Anki all package | $19.99 | per year |
| Buy 500 Points | $2.99 | one-time |
| TOEIC 600 Words Special Offer | $4.99 | one-time |
| 1000 Basic English Words | $4.99 | one-time |
| IELTS Vocabulary Discount | $4.99 | one-time |
| English Daily Routine | $4.99 | one-time |
| Phrases for Basic Communicate | $4.99 | one-time |
| Anki Minnano Nihongo discount | $8.99 | one-time |
| English - IELTS Vocabulary | $9.99 | one-time |
| 600 TOEIC words | $9.99 | one-time |
| Japanese - Minnano Nihongo | $12.99 | one-time |
| Koki Flashcards Lifetime Discount | $59.99 | one-time |
| Koki Flashcards Lifetime | $79.99 | one-time |


### Onki

[App page](https://appshunter.io/ios/app/onki/id6757570439)

This app uses a modified spaced repetition algorithm to help you memorize information efficiently. It presents you with cards due for review daily and reschedules them based on your recall accuracy. The goal is to minimize study time while maximizing retention.

**Highlights:** Modified FSRS algorithm, Daily card reviews, Recall-based rescheduling, Adjustable difficulty, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $1 Tip | $1.00 | one-time |
| $3 Tip | $3.00 | one-time |
| $5 Tip | $5.00 | one-time |
| $10 Tip | $10.00 | one-time |
| $20 Tip | $20.00 | one-time |
| $50 Tip | $50.00 | one-time |
| $100 Tip | $100.00 | one-time |


## Frequently asked questions

### Is Koki Flashcards free?

Koki Flashcards is free to download, with in-app purchases available.

### Is Onki free?

Onki is free to download, with in-app purchases available.

### Which has better reviews, Koki Flashcards or Onki?

Onki is rated higher. Koki Flashcards averages 4.8 out of 5 from 343 ratings, while Onki averages 5.0 from 4 ratings.

### Do Koki Flashcards or Onki have ads?

Koki Flashcards shows ads; Onki does not.

### Which is updated more often, Koki Flashcards or Onki?

Koki Flashcards ships an update every 9 days, and Onki monthly. Most recently, Koki Flashcards was updated on October 21, 2026 and Onki on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*