# IsTalk vs PDFリーダー

The clearest difference is ads: PDFリーダー at none against IsTalk's shown. IsTalk's advantage is update cadence (every 3 days vs every 3 months) and iOS requirement (15.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. IsTalk sells 9 in-app purchases, starting at $1.99 per 7 days and PDFリーダー sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

IsTalk ships an update every 3 days, PDFリーダー every 3 months. The most recent releases landed on October 27, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | IsTalk | PDFリーダー |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/istalk-talk-analysis/id1555905116/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 49.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 147 MB | 2 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [REALBIND .inc](https://appshunter.io/developer/1555905118) | [JUNICHI HASHIMOTO](https://appshunter.io/developer/1609225560) |

## What reviewers say

### IsTalk

[App page](https://appshunter.io/ios/app/istalk-talk-analysis/id1555905116)

Analyze your LINE chat history to understand your communication patterns and compatibility with others. Discover insights into your conversations, including frequently used phrases, chat times, and relationship dynamics, all processed securely offline.

**Highlights:** LINE chat analysis, Compatibility diagnosis, Offline processing, AI relationship mapping, Habit and behavior insights, Time-series trend analysis, Group chat analysis

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan Weekly | $1.99 | per 7 days |
| Premium Plan Monthly | $2.99 | per month |
| Premium Plan Annual | $22.99 | per year |
| 広告の非表示+追加コンテンツ開放 | Free | one-time |
| S- Ticket（10 set） | $1.99 | one-time |
| S- Ticket（20 set） | $2.99 | one-time |
| S- Ticket（30 set） | $3.99 | one-time |
| S- Ticket（50 set） | $6.99 | one-time |
| S- Ticket（100 set） | $11.99 | one-time |

**What reviewers like**

- ✨ Detailed analysis
- 🤩 Fun and interesting
- 🚀 Quick results
- 👍 Easy LINE integration
- 💖 Free premium features (ads)

**What reviewers complain about**

- 📉 Inaccurate data counts
- 🐌 App performance issues
- 🔋 Phone gets hot/slow
- ❌ Limited analysis period
- 🪲 Crashes frequently

**Reported bugs**

- AI accuracy issues (message sender identification)
- Incorrect call counts
- Incorrect message counts (e.g., 'w' count)
- Incorrect 'love word' classification
- App crashes when analyzing large files

**Requested features**

- Enable Instagram DM analysis
- Allow viewing all past LINE messages
- Improve accuracy of message/call counts
- Expand analysis period
- Add dark mode


### PDFリーダー

[App page](https://appshunter.io/ios/app/pdf-focuspdf/id6766133605)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Paid features unlocked | $1.99 | one-time |


## Frequently asked questions

### Is IsTalk free?

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

### Is PDFリーダー free?

PDFリーダー is free to download, with in-app purchases available.

### Do IsTalk or PDFリーダー have ads?

IsTalk shows ads; PDFリーダー does not.

### Which is updated more often, IsTalk or PDFリーダー?

IsTalk ships an update every 3 days, and PDFリーダー every 3 months. Most recently, IsTalk was updated on October 27, 2026 and PDFリーダー on October 2, 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.*