# RuedaMemo vs Planetary Guide

The clearest difference is price: RuedaMemo at Free against Planetary Guide's $9.99. RuedaMemo also leads on iOS requirement (15.6 vs 18.0). Planetary Guide's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 6 weeks). On ads and device support there is nothing between them.

RuedaMemo is free to download; Planetary Guide costs $9.99 up front. RuedaMemo sells 1 one-off in-app purchase. Planetary Guide asks for nothing beyond the download.

RuedaMemo ships an update every 6 weeks, Planetary Guide weekly. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RuedaMemo | Planetary Guide |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 72 MB | 7 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KWE Tree](https://appshunter.io/developer/1218337718) | [Allyson Jane Bunting](https://appshunter.io/developer/1745521704) |

## What reviewers say

### RuedaMemo

[App page](https://appshunter.io/ios/app/ruedamemo/id1378468270)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium version of SalsaMemo | $8.99 | one-time |


### Planetary Guide

[App page](https://appshunter.io/ios/app/planetary-guide/id6502454896)

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

**In-app purchases:** none


## Frequently asked questions

### Is RuedaMemo free?

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

### Is Planetary Guide free?

Planetary Guide costs $9.99, with no in-app purchases.

### Do RuedaMemo or Planetary Guide have ads?

Neither RuedaMemo nor Planetary Guide shows ads.

### Which is updated more often, RuedaMemo or Planetary Guide?

RuedaMemo ships an update every 6 weeks, and Planetary Guide weekly. Most recently, RuedaMemo was updated on October 2, 2026 and Planetary Guide on October 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.*