# Habit Tracker vs Duet

The clearest difference is in-app purchases: Habit Tracker at none against Duet's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Duet sells 1 one-off in-app purchase. Habit Tracker asks for nothing beyond the download.

Habit Tracker ships an update every 6 days, Duet every 10 days. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Habit Tracker | Duet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 10 days |
| Size | 4 MB | 31 MB |
| Requires iOS | **26.5** | 27.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kushal Patel](https://appshunter.io/developer/6804291024) | [Conscious Engines](https://appshunter.io/developer/1876149587) |

## What reviewers say

### Habit Tracker

[App page](https://appshunter.io/ios/app/habit-tracker-leo/id6804296554)

**In-app purchases:** none


### Duet

[App page](https://appshunter.io/ios/app/duet-pdf-reader/id6821941148)

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duet Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Habit Tracker free?

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

### Is Duet free?

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

### Do Habit Tracker or Duet have ads?

Neither Habit Tracker nor Duet shows ads.

### Which is updated more often, Habit Tracker or Duet?

Habit Tracker ships an update every 6 days, and Duet every 10 days. Most recently, Habit Tracker was updated on November 6, 2026 and Duet on November 10, 2026.

---

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