# IWillRemind vs Grain Calculator

The clearest difference is in-app purchases: IWillRemind at none against Grain Calculator's 2. IWillRemind also leads on ads (none vs shown) and update cadence (every 11 days vs monthly). On price, device support and iOS requirement there is nothing between them.

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

IWillRemind ships an update every 11 days, Grain Calculator monthly. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | IWillRemind | Grain Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/iwillremind/id1477218836/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Monthly |
| Monetization | Free | — |
| Size | 18 MB | 55 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aliaksandr Dziubkin](https://appshunter.io/developer/943558466) | [Andrii Karavan](https://appshunter.io/developer/1751942401) |

## What reviewers say

### IWillRemind

[App page](https://appshunter.io/ios/app/iwillremind/id1477218836)

Organize your life with this straightforward app for managing reminders and to-do lists. Set location-based alerts and utilize quick action buttons for calls, emails, or website visits. Supports both light and dark themes for a personalized experience.

**Highlights:** Reminder management, To-do list creation, Location-based reminders, Quick action buttons, Light and dark themes, Shareable lists

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

**In-app purchases:** none


### Grain Calculator

[App page](https://appshunter.io/ios/app/grain-calculator/id6504358520)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly | $2.99 | per month |
| Premium annual | $14.99 | per year |


## Frequently asked questions

### Is IWillRemind free?

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

### Is Grain Calculator free?

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

### Do IWillRemind or Grain Calculator have ads?

Grain Calculator shows ads; IWillRemind does not.

### Which is updated more often, IWillRemind or Grain Calculator?

IWillRemind ships an update every 11 days, and Grain Calculator monthly. Most recently, IWillRemind was updated on October 22, 2026 and Grain Calculator on October 17, 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.*