# DuoLens vs BIT101

The clearest difference is ads: BIT101 at none against DuoLens's shown. BIT101 also leads on update cadence (every 3 days vs every 10 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

DuoLens ships an update every 10 days, BIT101 every 3 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | DuoLens | BIT101 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bit101/id6761147125/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | — | Free |
| Size | 8 MB | 16 MB |
| Requires iOS | 17.4 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [明伟 陈](https://appshunter.io/developer/726238814) | [恒熙 吕](https://appshunter.io/developer/1887912350) |

## What reviewers say

### DuoLens

[App page](https://appshunter.io/ios/app/duolens-front-and-back-camera/id1579235028)

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

**In-app purchases:** none


### BIT101

[App page](https://appshunter.io/ios/app/bit101/id6761147125)

This app serves as a campus life assistant, offering features like class schedules, event planning, campus maps, grade tracking, and a community forum. It aims to streamline daily activities for students within the university.

**Highlights:** Class schedule management, Event and daily planning, Campus navigation map, Academic grade tracking, Community forum access

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DuoLens free?

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

### Is BIT101 free?

BIT101 is free to download, with no in-app purchases.

### Do DuoLens or BIT101 have ads?

DuoLens shows ads; BIT101 does not.

### Which is updated more often, DuoLens or BIT101?

DuoLens ships an update every 10 days, and BIT101 every 3 days. Most recently, DuoLens was updated on October 24, 2026 and BIT101 on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*