# DF Lens vs ChatMap

The clearest difference is in-app purchases: DF Lens at none against ChatMap's 3. DF Lens also leads on ratings volume (13 vs 1). ChatMap's advantage is rating (5.0 vs 4.7) and update cadence (weekly vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. ChatMap sells 3 in-app purchases, starting at $0.99 per 7 days. DF Lens asks for nothing beyond the download.

ChatMap holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DF Lens has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 91% of DF Lens's written reviews are positive against 100% of ChatMap's.

DF Lens ships an update every 2 weeks, ChatMap weekly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DF Lens | ChatMap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (13 ratings)](https://appshunter.io/ios/app/df-lens/id1487797915/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chatmap-ai-chat-with-chatbot/id6450284695/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 90.9% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 159 MB | 29 MB |
| Requires iOS | 11.2 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [DigsFact LLC](https://appshunter.io/developer/1487797914) | [世文 刘](https://appshunter.io/developer/1506341960) |

## What reviewers say

### DF Lens

[App page](https://appshunter.io/ios/app/df-lens/id1487797915)

Create, measure, and view 3D spaces digitally, from houses to tourist spots. Publish your interactive tours for a small fee to share across social media and websites.

**Highlights:** Digitally create 3D spaces, Measure dimensions, View and inspect spaces, Publish interactive tours, Share on social media

**In-app purchases:** none


### ChatMap

[App page](https://appshunter.io/ios/app/chatmap-ai-chat-with-chatbot/id6450284695)

This AI assistant leverages advanced GPT-4 technology to answer questions, generate text, and brainstorm ideas. It functions as a writing assistant, life companion, and role-playing partner, offering intelligent voice-to-text conversion and comprehensive chat history access.

**Highlights:** AI-powered chatbot with GPT-4, Voice-to-text conversion, Writing and essay assistance, Idea generation and brainstorming, Role-playing scenarios, Chat history access

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus(Week) | $0.99 | per 7 days |
| Plus(Year) | $29.99 | per year |
| Plus(Permanent) | $39.99 | one-time |


## Frequently asked questions

### Is DF Lens free?

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

### Is ChatMap free?

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

### Which has better reviews, DF Lens or ChatMap?

ChatMap is rated higher. DF Lens averages 4.7 out of 5 from 13 ratings, while ChatMap averages 5.0 from 1 ratings.

### Do DF Lens or ChatMap have ads?

Neither DF Lens nor ChatMap shows ads.

### Which is updated more often, DF Lens or ChatMap?

DF Lens ships an update every 2 weeks, and ChatMap weekly. Most recently, DF Lens was updated on October 19, 2026 and ChatMap on October 24, 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.*