# Reminder vs Simple Harmonic Motion Calc

The clearest difference is price: Reminder at Free against Simple Harmonic Motion Calc's $2.99. Reminder also leads on update cadence (every 6 days vs every 28 months) and ratings volume (342 vs 2). Simple Harmonic Motion Calc's advantage is in-app purchases (none vs 9) and rating (5.0 vs 4.6). On ads, device support and iOS requirement there is nothing between them.

Reminder is free to download; Simple Harmonic Motion Calc costs $2.99 up front. Reminder sells 9 in-app purchases, starting at $2.95 per year. Simple Harmonic Motion Calc asks for nothing beyond the download.

Simple Harmonic Motion Calc holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Reminder has 342 ratings behind it against 2, so its average is the more settled of the two.

Reminder ships an update every 6 days, Simple Harmonic Motion Calc every 28 months. The most recent releases landed on November 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Reminder | Simple Harmonic Motion Calc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.6 (342 ratings)](https://appshunter.io/ios/app/reminder-beep-me/id412693531/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simple-harmonic-motion-calc/id1406677354/reviews)** |
| Number of ratings | **342** | 2 |
| Positive reviews | 78.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 28 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 32 MB | 1 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yaniv Kalsky](https://appshunter.io/developer/310828189) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Reminder

[App page](https://appshunter.io/ios/app/reminder-beep-me/id412693531)

This app provides a fast and simple way to set reminders and persistent alarms. It's ideal for habit tracking, medication, and staying organized without the complexity of a calendar. Features include customizable nagging alarms, quick setup options, and repeat reminders.

**Highlights:** Nagging Mode for persistent alerts, Quick setup for timers and clock alarms, Customizable repeat reminders, Apple Watch integration, Customizable sounds and widgets

**Features:** Family Sharing, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Upgrade | $2.95 | per year |
| Annual Upgrade (1 Year) | $3.99 | per year |
| sound pack | $0.99 | one-time |
| nagging pack | $0.99 | one-time |
| upgrade to 10 Beeps limit | $0.99 | one-time |
| Ad-less option | $0.99 | one-time |
| upgrade to unlimited Beeps | $1.99 | one-time |
| Full Upgrade | $1.99 | one-time |
| Full Upgrade | $3.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Effective reminders
- 💡 Helpful for organizing appointments and tasks
- 🚀 Reliable and consistent

**What reviewers complain about**

- 🐛 Automatic deletion of old reminders
- 💡 Lack of hourly repeat option
- 💰 Paid upgrades required for more features
- 🐛 Randomly deleted reminders

**Reported bugs**

- Reminders not working as expected
- Upgrade issues causing loss of functionality
- Compatibility problems with newer iOS versions

**Requested features**

- Add weekly, monthly, and yearly repeat options
- Improve snooze functionality
- Integrate with calendar apps
- Add more customization options for sounds and alerts


### Simple Harmonic Motion Calc

[App page](https://appshunter.io/ios/app/simple-harmonic-motion-calc/id1406677354)

This physics calculator quickly computes various parameters of simple harmonic motion, including amplitude, frequency, displacement, velocity, and acceleration. It supports high precision calculations and offers unit flexibility, making it a handy tool for students and professionals.

**Highlights:** Instant calculation of motion parameters, Copyable results, Included reference formulas, Supports 16 decimal places, Multiple unit support, Ad-free and private

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

**In-app purchases:** none


## Frequently asked questions

### Is Reminder free?

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

### Is Simple Harmonic Motion Calc free?

Simple Harmonic Motion Calc costs $2.99, with no in-app purchases.

### Which has better reviews, Reminder or Simple Harmonic Motion Calc?

Simple Harmonic Motion Calc is rated higher. Reminder averages 4.6 out of 5 from 342 ratings, while Simple Harmonic Motion Calc averages 5.0 from 2 ratings.

### Do Reminder or Simple Harmonic Motion Calc have ads?

Neither Reminder nor Simple Harmonic Motion Calc shows ads.

### Which is updated more often, Reminder or Simple Harmonic Motion Calc?

Reminder ships an update every 6 days, and Simple Harmonic Motion Calc every 28 months. Most recently, Reminder was updated on November 1, 2026 and Simple Harmonic Motion Calc on October 11, 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.*