# Heredia Sostenible vs Deckbase

The clearest difference is in-app purchases: Heredia Sostenible at none against Deckbase's 7. Heredia Sostenible also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Deckbase sells 7 in-app purchases, starting at $5.99 per month. Heredia Sostenible asks for nothing beyond the download.

Heredia Sostenible ships an update every 4 days, Deckbase weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Heredia Sostenible | Deckbase |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 490 MB | 119 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CaNu Arts](https://appshunter.io/developer/736707183) | [Yosuke Sakurai](https://appshunter.io/developer/1706591331) |

## What reviewers say

### Heredia Sostenible

[App page](https://appshunter.io/ios/app/heredia-sostenible/id6443661599)

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

**In-app purchases:** none


### Deckbase

[App page](https://appshunter.io/ios/app/deckbase-ai-flashcard-maker/id6760248255)

Effortlessly create flashcards from PDFs, notes, or photos using AI. Study with spaced repetition, quizzes, and audio. Syncs across devices and supports Anki import/export.

**Highlights:** AI-generated flashcards from documents and photos, Spaced repetition study scheduler, Interactive quizzes, Audio playback for decks, Anki import and export, Cross-device syncing

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Month | $5.99 | per month |
| Pro Month | $11.99 | per month |
| Basic Year | $59.00 | per year |
| Pro Year | $119.00 | per year |
| Starter Pack | $4.99 | one-time |
| Booster Pack | $9.99 | one-time |
| Mega Pack | $19.99 | one-time |


## Frequently asked questions

### Is Heredia Sostenible free?

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

### Is Deckbase free?

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

### Do Heredia Sostenible or Deckbase have ads?

Deckbase shows ads; Heredia Sostenible does not.

### Which is updated more often, Heredia Sostenible or Deckbase?

Heredia Sostenible ships an update every 4 days, and Deckbase weekly. Most recently, Heredia Sostenible was updated on November 3, 2026 and Deckbase on November 5, 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.*