# DecoEcho vs AP Study

The clearest difference is in-app purchases: AP Study at none against DecoEcho's 1. AP Study also leads on update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DecoEcho sells 1 one-off in-app purchase. AP Study asks for nothing beyond the download.

DecoEcho ships an update monthly, AP Study weekly. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DecoEcho | AP Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/decoecho-flashcards-and-study/id6773129409/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 3 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lincoln Road Ventures, LLC](https://appshunter.io/developer/6773129411) | [Blake Young](https://appshunter.io/developer/1857948179) |

## What reviewers say

### DecoEcho

[App page](https://appshunter.io/ios/app/decoecho-flashcards-and-study/id6773129409)

This app uses a smart spaced-repetition engine to optimize your study sessions. It adapts to your learning pace, showing you cards you struggle with more often and those you know well less frequently. Focus on learning with its intuitive design and privacy-focused approach.

**Highlights:** Spaced-repetition study engine, Dating-app style swipe grading, Type-the-answer study mode, Two-sided cards with text and images, Daily and lifetime study statistics, iCloud sync, Deck sharing with classmates

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DecoEcho Pro | $4.99 | one-time |


### AP Study

[App page](https://appshunter.io/ios/app/ap-study-ivy-prep/id6787478174)

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

**In-app purchases:** none


## Frequently asked questions

### Is DecoEcho free?

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

### Is AP Study free?

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

### Do DecoEcho or AP Study have ads?

Neither DecoEcho nor AP Study shows ads.

### Which is updated more often, DecoEcho or AP Study?

DecoEcho ships an update monthly, and AP Study weekly. Most recently, DecoEcho was updated on October 9, 2026 and AP Study on October 6, 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.*