# Rotor Engine vs Birthday Reminder

The clearest difference is in-app purchases: Rotor Engine at none against Birthday Reminder's 1. Rotor Engine also leads on iOS requirement (10.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Birthday Reminder sells 1 one-off in-app purchase. Rotor Engine asks for nothing beyond the download.

## The numbers

| Metric | Rotor Engine | Birthday Reminder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (11 ratings)](https://appshunter.io/ios/app/birthday-reminder-countdowns/id6762507504/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 33 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hublot SA](https://appshunter.io/developer/396904336) | [Damien Asseya](https://appshunter.io/developer/878472983) |

## What reviewers say

### Rotor Engine

[App page](https://appshunter.io/ios/app/rotor-engine/id1498187557)

**Features:** macOS Compatibility

**In-app purchases:** none


### Birthday Reminder

[App page](https://appshunter.io/ios/app/birthday-reminder-countdowns/id6762507504)

Never forget a birthday again with this app that provides live countdowns and smart notifications. Easily import contacts, add personal notes, and manage gift ideas. Your data stays private on your device.

**Highlights:** Live birthday countdowns, Smart advance notifications, Import from Contacts, Add photos and notes, Gift idea wishlist, Add to Calendar, Local data storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $2.99 | one-time |


## Frequently asked questions

### Is Rotor Engine free?

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

### Is Birthday Reminder free?

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

### Do Rotor Engine or Birthday Reminder have ads?

Neither Rotor Engine nor Birthday Reminder shows ads.

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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.*