# ROVAPRO vs Pendulum

The clearest difference is in-app purchases: ROVAPRO at none against Pendulum's 5. ROVAPRO also leads on iOS requirement (12.0 vs 17.0). Pendulum's advantage is update cadence (every 9 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Pendulum sells 5 one-off in-app purchases. ROVAPRO asks for nothing beyond the download.

ROVAPRO ships an update every 2 months, Pendulum every 9 days. The most recent releases landed on May 16, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ROVAPRO | Pendulum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (16 ratings)](https://appshunter.io/ios/app/pendulum-pen-pal-tracker/id6444290573/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GemRed](https://appshunter.io/developer/1279222567) | [Benjamin Cardy](https://appshunter.io/developer/1588708175) |

## What reviewers say

### ROVAPRO

[App page](https://appshunter.io/ios/app/rovapro/id1637840669)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pendulum

[App page](https://appshunter.io/ios/app/pendulum-pen-pal-tracker/id6444290573)

This app helps you manage your pen pal relationships by tracking correspondence. Record when you send and receive letters, note writing materials, and set reminders to stay in touch. Sync your data across devices for seamless management.

**Highlights:** Track sent and received letters, Record pen, ink, and paper used, Set reminders to write and post, Monitor letter delivery times, iCloud sync across devices

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Fine Tip | $0.99 | one-time |
| Fine Tip | $1.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Broad Tip | $5.99 | one-time |
| Stub Tip | $9.99 | one-time |


## Frequently asked questions

### Is ROVAPRO free?

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

### Is Pendulum free?

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

### Do ROVAPRO or Pendulum have ads?

Neither ROVAPRO nor Pendulum shows ads.

### Which is updated more often, ROVAPRO or Pendulum?

ROVAPRO ships an update every 2 months, and Pendulum every 9 days. Most recently, ROVAPRO was updated on May 16, 2026 and Pendulum on September 10, 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.*