# IDT Data Logger vs Lisa Chat

The clearest difference is in-app purchases: IDT Data Logger at none against Lisa Chat's 4. IDT Data Logger also leads on ads (none vs shown) and iOS requirement (12.0 vs 14.0). Lisa Chat's advantage is rating (4.4 vs 4.0) and update cadence (monthly vs every 11 months). On price and device support there is nothing between them.

Both are free to download. Lisa Chat sells 4 in-app purchases, starting at $5.99 per 7 days. IDT Data Logger asks for nothing beyond the download.

Lisa Chat holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Lisa Chat has 892 ratings behind it against 1, so its average is the more settled of the two.

IDT Data Logger ships an update every 11 months, Lisa Chat monthly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IDT Data Logger | Lisa Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/idt-data-logger/id1555614905/reviews) | **[4.4 (892 ratings)](https://appshunter.io/ios/app/lisa-chat-ai-bot-assistant/id6448847169/reviews)** |
| Number of ratings | 1 | **892** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 113 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Instruments & Data Tools Pty Ltd](https://appshunter.io/developer/1477164406) | [Convert Software](https://appshunter.io/developer/1649777761) |

## What reviewers say

### IDT Data Logger

[App page](https://appshunter.io/ios/app/idt-data-logger/id1555614905)

Manually record data points using user-defined labels and NFC tags. Capture tag information like number and description alongside your collected data. Share your recorded information across devices via AirDrop.

**Highlights:** Manual data recording, User-defined labels, NFC tag integration, Capture tag number and description, Data sharing via AirDrop

**Features:** macOS Compatibility

**In-app purchases:** none


### Lisa Chat

[App page](https://appshunter.io/ios/app/lisa-chat-ai-bot-assistant/id6448847169)

This AI chatbot provides mobile access to advanced language models for various tasks. It assists with writing, content creation, coding, translation, and general inquiries, prioritizing ease of use and shortcuts for daily assistance.

**Highlights:** Access GPT-4 and GPT-3.5 Turbo APIs, Essay writing assistance, Social media content creation, Coding and translation help, Email drafting and article writing, Poetry and lyric generation

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly ChatGPT | $5.99 | per 7 days |
| Monthly ChatGPT | $14.99 | per month |
| Annual ChatGPT | $29.99 | per year |
| Lifetime ChatGPT | $39.99 | one-time |

**What reviewers like**

- 👍 Great app
- 💡 Useful AI assistant
- 👍 Love the app

**What reviewers complain about**

- 🐛 Crashes frequently
- 🔒 Subscription issues
- 🐛 Doesn't open at all
- 🔒 Misleading advertising

**Reported bugs**

- Immediate crashes on opening
- Subscription restoration problems
- Incompatibility with some devices

**Requested features**

- Improve stability and reliability
- Provide more transparent pricing information
- Enhance AI capabilities and responses


## Frequently asked questions

### Is IDT Data Logger free?

IDT Data Logger is free to download, with no in-app purchases.

### Is Lisa Chat free?

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

### Which has better reviews, IDT Data Logger or Lisa Chat?

Lisa Chat is rated higher. IDT Data Logger averages 4.0 out of 5 from 1 ratings, while Lisa Chat averages 4.4 from 892 ratings.

### Do IDT Data Logger or Lisa Chat have ads?

Lisa Chat shows ads; IDT Data Logger does not.

### Which is updated more often, IDT Data Logger or Lisa Chat?

IDT Data Logger ships an update every 11 months, and Lisa Chat monthly. Most recently, IDT Data Logger was updated on October 29, 2026 and Lisa Chat on October 30, 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.*