# Opelog vs Replace

The clearest difference is in-app purchases: Opelog at none against Replace's 1. Opelog also leads on update cadence (every 3 days vs every 10 days). Replace's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Replace sells 1 one-off in-app purchase. Opelog asks for nothing beyond the download.

Opelog ships an update every 3 days, Replace every 10 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Opelog | Replace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 10 days |
| Size | 6 MB | 27 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yusei Ando](https://appshunter.io/developer/1881955944) | [AKIHIRO MATSUYAMA](https://appshunter.io/developer/6789115438) |

## What reviewers say

### Opelog

[App page](https://appshunter.io/ios/app/opelog-open-date-log/id6766040294)

**In-app purchases:** none


### Replace

[App page](https://appshunter.io/ios/app/replace-it-reminder-for-home/id6789764337)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| アイテムが無制限（買い切り） | $1.99 | one-time |


## Frequently asked questions

### Is Opelog free?

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

### Is Replace free?

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

### Do Opelog or Replace have ads?

Neither Opelog nor Replace shows ads.

### Which is updated more often, Opelog or Replace?

Opelog ships an update every 3 days, and Replace every 10 days. Most recently, Opelog was updated on October 25, 2026 and Replace on October 31, 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.*