# Optimem vs Klim8

The clearest difference is update cadence: Klim8 at every 5 days against Optimem's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Optimem ships an update monthly, Klim8 every 5 days. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Optimem | Klim8 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (30 ratings)](https://appshunter.io/ios/app/optimem-smart-flashcards/id1574383108/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 54 MB | 85 MB |
| Requires iOS | 16.0 | **15.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Organic Software LLC](https://appshunter.io/developer/1574383110) | [Krishiv Jain](https://appshunter.io/developer/1829719940) |

## What reviewers say

### Optimem

[App page](https://appshunter.io/ios/app/optimem-smart-flashcards/id1574383108)

Master any subject quickly with science-backed flashcards. Learn in short, engaging sessions using spaced repetition and multimedia support. Track your progress and customize your study experience with a simple, distraction-free interface.

**Highlights:** Bite-sized learning sessions, Spaced repetition system, Multimedia flashcard support, Progress tracking and stats, Customizable study settings, Dark mode, Content creation and sharing

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

**In-app purchases:** none


### Klim8

[App page](https://appshunter.io/ios/app/klim8/id6749273382)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optimem free?

Optimem is free to download, with no in-app purchases.

### Is Klim8 free?

Klim8 is free to download, with no in-app purchases.

### Do Optimem or Klim8 have ads?

Neither Optimem nor Klim8 shows ads.

### Which is updated more often, Optimem or Klim8?

Optimem ships an update monthly, and Klim8 every 5 days. Most recently, Optimem was updated on September 17, 2026 and Klim8 on September 10, 2026.

---

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