# DateCalcMemo ～ how many days vs MemoRing

The clearest difference is iOS requirement: DateCalcMemo ～ how many days at 8.0 against MemoRing's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DateCalcMemo ～ how many days ships an update fortnightly, MemoRing monthly. The most recent releases landed on October 13, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | DateCalcMemo ～ how many days | MemoRing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/datecalcmemo-how-many-days/id702646469/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 7 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TOSHIYUKI SEKIZAKI](https://appshunter.io/developer/664398153) | [Yumiko Ishihara](https://appshunter.io/developer/1702444192) |

## What reviewers say

### DateCalcMemo ～ how many days

[App page](https://appshunter.io/ios/app/datecalcmemo-how-many-days/id702646469)

Calculate the number of days between two dates or determine a future or past date based on a given number of days. Save important calculation results with associated notes.

**Highlights:** Calculate days between two dates, Calculate future/past dates, Save calculation results, Add notes to saved calculations, Delete app data when app is removed

**Features:** macOS Compatibility

**In-app purchases:** none


### MemoRing

[App page](https://appshunter.io/ios/app/memoring/id6461309259)

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

**In-app purchases:** none


## Frequently asked questions

### Is DateCalcMemo ～ how many days free?

DateCalcMemo ～ how many days is free to download, with no in-app purchases.

### Is MemoRing free?

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

### Do DateCalcMemo ～ how many days or MemoRing have ads?

Neither DateCalcMemo ～ how many days nor MemoRing shows ads.

### Which is updated more often, DateCalcMemo ～ how many days or MemoRing?

DateCalcMemo ～ how many days ships an update fortnightly, and MemoRing monthly. Most recently, DateCalcMemo ～ how many days was updated on October 13, 2026 and MemoRing on September 26, 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.*