# FirstSeed Calendar vs ieRcalc

The clearest difference is in-app purchases: ieRcalc at none against FirstSeed Calendar's 2. ieRcalc also leads on ads (none vs shown) and iOS requirement (15.1 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. FirstSeed Calendar sells 2 in-app purchases, starting at $2.99 per month. ieRcalc asks for nothing beyond the download.

FirstSeed Calendar ships an update every 8 days, ieRcalc every 4 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | FirstSeed Calendar | ieRcalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (337 ratings)](https://appshunter.io/ios/app/firstseed-calendar/id1321260278/reviews)** | — |
| Number of ratings | **337** | — |
| Positive reviews | 80.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 37 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FirstSeed Inc](https://appshunter.io/developer/1321260277) | [REI KAMIKURA](https://appshunter.io/developer/1896764006) |

## What reviewers say

### FirstSeed Calendar

[App page](https://appshunter.io/ios/app/firstseed-calendar/id1321260278)

A powerful scheduling app that manages both events and reminders. It offers innovative calendar views, interactive widgets for various iOS versions, and seamless syncing with Apple's Calendar and Reminders apps. An optional paid upgrade unlocks advanced features like natural language event processing and drag-and-drop functionality.

**Highlights:** Interactive and lock-screen widgets, Full-featured month, week, and list views, Event and reminder management, Natural language event processing (paid), Drag & drop event manipulation (paid), Apple Watch support, Syncs with Apple Calendar and Reminders

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Donation | $2.99 | per month |
| Pro Version | $9.99 | one-time |


### ieRcalc

[App page](https://appshunter.io/ios/app/iercalc/id6771453728)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FirstSeed Calendar free?

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

### Is ieRcalc free?

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

### Do FirstSeed Calendar or ieRcalc have ads?

FirstSeed Calendar shows ads; ieRcalc does not.

### Which is updated more often, FirstSeed Calendar or ieRcalc?

FirstSeed Calendar ships an update every 8 days, and ieRcalc every 4 days. Most recently, FirstSeed Calendar was updated on October 29, 2026 and ieRcalc on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*