# Prolog Retro Notes vs SyncFlowBoard

The clearest difference is in-app purchases: SyncFlowBoard at none against Prolog Retro Notes's 1. SyncFlowBoard also leads on ads (none vs shown) and update cadence (every 3 days vs every 9 months). Prolog Retro Notes's advantage is iOS requirement (14.0 vs 17.6). On price 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. SyncFlowBoard asks for nothing beyond the download.

Prolog Retro Notes ships an update every 9 months, SyncFlowBoard every 3 days. The most recent releases landed on October 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Prolog Retro Notes | SyncFlowBoard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/prolog-retro-notes-8-bit-memo/id6468677672/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 5 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [yasuhiro kojima](https://appshunter.io/developer/1244729145) | [SUGAR SOUND, K.K.](https://appshunter.io/developer/1811951231) |

## 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 |


### SyncFlowBoard

[App page](https://appshunter.io/ios/app/syncflowboard/id6745395365)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prolog Retro Notes free?

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

### Is SyncFlowBoard free?

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

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

Prolog Retro Notes shows ads; SyncFlowBoard does not.

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

Prolog Retro Notes ships an update every 9 months, and SyncFlowBoard every 3 days. Most recently, Prolog Retro Notes was updated on October 6, 2026 and SyncFlowBoard on September 23, 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.*