# Zapptive vs Lumen

The clearest difference is ads: Lumen at none against Zapptive's shown. Lumen also leads on monetization model (free vs ad-supported). Zapptive's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Zapptive against 5.0 for Lumen. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 9, 2026 and June 28, 2026 respectively.

## The numbers

| Metric | Zapptive | Lumen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/zapptive/id6476590363/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/lumen-knowledge-browser/id6762682475/reviews) |
| Number of ratings | **5** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Ad-supported | **Free** |
| Size | 27 MB | 28 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Zamz Labs LLC](https://appshunter.io/developer/1727265651) | [Daniel Kosukhin](https://appshunter.io/developer/1852657475) |

## What reviewers say

### Zapptive

[App page](https://appshunter.io/ios/app/zapptive/id6476590363)

This AI-powered learning assistant helps you master new topics and learn how to use AI tools. It features an AI chatbot with built-in tools for image creation, web search, and note analysis, along with a spaced repetition system for efficient review.

**Highlights:** AI Chatbot with built-in tools, Image creation and analysis, Web search integration, Spaced Repetition System, Organize notes with AI, Learn any subject faster

**Features:** macOS Compatibility

**In-app purchases:** none


### Lumen

[App page](https://appshunter.io/ios/app/lumen-knowledge-browser/id6762682475)

This app acts as a browser that remembers what you read, building a personal knowledge base from engaged pages. It allows you to ask questions in plain English about your reading history, with answers generated by an on-device AI. All your data remains private and offline.

**Highlights:** On-device AI knowledge base, Plain English questioning, Automatic content organization, Private and offline browsing, Tracker blocking, Source citation for answers

**In-app purchases:** none


## Frequently asked questions

### Is Zapptive free?

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

### Is Lumen free?

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

### Which has better reviews, Zapptive or Lumen?

Zapptive and Lumen are both rated 5.0 out of 5 on the App Store, from 5 and 4 ratings respectively.

### Do Zapptive or Lumen have ads?

Zapptive shows ads; Lumen does not.

### Which is updated more often, Zapptive or Lumen?

Zapptive ships an update every 2 weeks, and Lumen every 2 weeks. Most recently, Zapptive was updated on September 9, 2026 and Lumen on June 28, 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.*