# Prolog Retro Notes vs iSoundYou

The clearest difference is update cadence: iSoundYou at every 3 days against Prolog Retro Notes's every 9 months. Prolog Retro Notes's advantage is iOS requirement (14.0 vs 18). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Prolog Retro Notes sells 1 in-app purchase, starting at $0.99 per month and iSoundYou sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Prolog Retro Notes ships an update every 9 months, iSoundYou every 3 days. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Prolog Retro Notes | iSoundYou |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/prolog-retro-notes-8-bit-memo/id6468677672/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 190 MB |
| Requires iOS | **14.0** | 18 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [yasuhiro kojima](https://appshunter.io/developer/1244729145) | [Shum Wing Chiu](https://appshunter.io/developer/593940858) |

## What reviewers say

### Prolog Retro Notes

[App page](https://appshunter.io/ios/app/prolog-retro-notes-8-bit-memo/id6468677672)

This app offers a unique note-taking experience with a retro 8-bit aesthetic. It allows users to record memos, track editing time, and even attach photos, all within a nostalgic, game-like interface. Level up your notes and enjoy a blast from the past.

**Highlights:** Retro 8-bit graphics, Memo recording, Playtime tracking, Level-based text progress, Photo attachment, Passcode lock (premium)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium plan | $0.99 | per month |


### iSoundYou

[App page](https://appshunter.io/ios/app/isoundyou/id6755599896)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Keycaps | Free | one-time |
| Sponsor Version | $0.99 | one-time |


## Frequently asked questions

### Is Prolog Retro Notes free?

Prolog Retro Notes is free to download, with in-app purchases available.

### Is iSoundYou free?

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

### Do Prolog Retro Notes or iSoundYou have ads?

Both Prolog Retro Notes and iSoundYou show ads.

### Which is updated more often, Prolog Retro Notes or iSoundYou?

Prolog Retro Notes ships an update every 9 months, and iSoundYou every 3 days. Most recently, Prolog Retro Notes was updated on October 22, 2026 and iSoundYou on October 15, 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.*