# 返信どうする？AI添削・敬語翻訳・言い換えツール vs PopSpark

The clearest difference is update cadence: PopSpark at every 9 days against 返信どうする？AI添削・敬語翻訳・言い換えツール's every 4 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 返信どうする？AI添削・敬語翻訳・言い換えツール sells 1 in-app purchase, starting at $1.99 per month and PopSpark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

返信どうする？AI添削・敬語翻訳・言い換えツール ships an update every 4 weeks, PopSpark every 9 days. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 返信どうする？AI添削・敬語翻訳・言い換えツール | PopSpark |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 6 MB | 7 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Appricot Co.,Ltd.](https://appshunter.io/developer/1716553156) | [TAKUMI TAMAKI](https://appshunter.io/developer/1827256931) |

## What reviewers say

### 返信どうする？AI添削・敬語翻訳・言い換えツール

[App page](https://appshunter.io/ios/app/ai/id6741709838)

AI-powered tool to generate replies for various messages, from social media to business emails. It automatically detects the context and adjusts the tone, ensuring natural-sounding responses. Also offers proofreading and screenshot text extraction for convenience.

**Highlights:** AI-generated replies, Automatic context detection, Natural text formatting, Draft proofreading, Screenshot text extraction, Reply history and adjustment

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Plan | $1.99 | per month |


### PopSpark

[App page](https://appshunter.io/ios/app/popspark/id6755963992)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PopSpark プレミアム | $0.99 | one-time |


## Frequently asked questions

### Is 返信どうする？AI添削・敬語翻訳・言い換えツール free?

返信どうする？AI添削・敬語翻訳・言い換えツール is free to download, with in-app purchases available.

### Is PopSpark free?

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

### Do 返信どうする？AI添削・敬語翻訳・言い換えツール or PopSpark have ads?

Both 返信どうする？AI添削・敬語翻訳・言い換えツール and PopSpark show ads.

### Which is updated more often, 返信どうする？AI添削・敬語翻訳・言い換えツール or PopSpark?

返信どうする？AI添削・敬語翻訳・言い換えツール ships an update every 4 weeks, and PopSpark every 9 days. Most recently, 返信どうする？AI添削・敬語翻訳・言い換えツール was updated on October 15, 2026 and PopSpark on October 1, 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.*