# Stacks vs OctoCode

The clearest difference is update cadence: OctoCode at every 8 days against Stacks's monthly. Stacks's advantage is iOS requirement (15.1 vs 17). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stacks sells 2 in-app purchases, starting at $9.99 per 3 months and OctoCode sells 3 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Stacks ships an update monthly, OctoCode every 8 days. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Stacks | OctoCode |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Freemium | — |
| Size | 63 MB | 264 MB |
| Requires iOS | **15.1** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lewis Hoy](https://appshunter.io/developer/1812196615) | [Ali Edis](https://appshunter.io/developer/1728293518) |

## What reviewers say

### Stacks

[App page](https://appshunter.io/ios/app/stacks-language-flashcards/id6745429203)

Create flashcards from your own experiences and conversations. This app uses spaced repetition to help you remember vocabulary longer with less study. It supports over 100 languages and offers offline study capabilities.

**Highlights:** Create cards from stories and conversations, Spaced repetition system (FSRS), Offline study mode, Automatic translations, Supports over 100 languages, Romanization for select scripts, Clean, minimal interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacks+ Quarterly | $9.99 | per 3 months |
| Stacks+ Yearly | $27.99 | per year |


### OctoCode

[App page](https://appshunter.io/ios/app/octocode/id6762797642)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $14.99 | per month |
| Yearly Premium – Save 52% | $29.99 | per year |
| Lifetime Premium | $49.99 | one-time |


## Frequently asked questions

### Is Stacks free?

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

### Is OctoCode free?

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

### Do Stacks or OctoCode have ads?

Neither Stacks nor OctoCode shows ads.

### Which is updated more often, Stacks or OctoCode?

Stacks ships an update monthly, and OctoCode every 8 days. Most recently, Stacks was updated on September 10, 2026 and OctoCode on September 14, 2026.

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