# sci.calculator vs ReminderCal

The clearest difference is update cadence: ReminderCal at daily against sci.calculator's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. sci.calculator sells 1 one-off in-app purchase and ReminderCal sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

sci.calculator ships an update every 5 weeks, ReminderCal daily. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | sci.calculator | ReminderCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Size | 49 MB | 35 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) | [Mohamed El Mathari](https://appshunter.io/developer/1812290470) |

## What reviewers say

### sci.calculator

[App page](https://appshunter.io/ios/app/scicalculator/id1620728508)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $1.99 | one-time |


### ReminderCal

[App page](https://appshunter.io/ios/app/remindercal-reminder-app/id6758520306)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is sci.calculator free?

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

### Is ReminderCal free?

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

### Do sci.calculator or ReminderCal have ads?

Neither sci.calculator nor ReminderCal shows ads.

### Which is updated more often, sci.calculator or ReminderCal?

sci.calculator ships an update every 5 weeks, and ReminderCal daily. Most recently, sci.calculator was updated on October 27, 2026 and ReminderCal on October 25, 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.*