# Habit Heatmap vs PaperDue

The clearest difference is update cadence: PaperDue at weekly against Habit Heatmap's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Habit Heatmap sells 2 one-off in-app purchases and PaperDue sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Habit Heatmap ships an update every 3 weeks, PaperDue weekly. The most recent releases landed on September 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Habit Heatmap | PaperDue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/paperdue-deadline-tracker/id6761820921/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 4 MB | 3 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tobias Weissert](https://appshunter.io/developer/1752442573) | [梓豪 朱](https://appshunter.io/developer/1891542786) |

## What reviewers say

### Habit Heatmap

[App page](https://appshunter.io/ios/app/habit-heatmap/id6747598515)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Habit Heatmap Student | $1.99 | one-time |
| Habit Heatmap Pro | $2.99 | one-time |


### PaperDue

[App page](https://appshunter.io/ios/app/paperdue-deadline-tracker/id6761820921)

Never miss a crucial submission deadline for AI research conferences. This app provides live countdowns, smart notifications, and conference rankings to help academics stay organized and focused on their work.

**Highlights:** Live countdown tracker for hundreds of conferences, Smart reminder notifications, CORE & CCF conference rankings, Dynamic Island countdown ticker, Home & Lock Screen widgets, Timeline & calendar view, Multi-timezone support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PaperDue Pro | $1.99 | one-time |


## Frequently asked questions

### Is Habit Heatmap free?

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

### Is PaperDue free?

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

### Do Habit Heatmap or PaperDue have ads?

Neither Habit Heatmap nor PaperDue shows ads.

### Which is updated more often, Habit Heatmap or PaperDue?

Habit Heatmap ships an update every 3 weeks, and PaperDue weekly. Most recently, Habit Heatmap was updated on September 26, 2026 and PaperDue on October 23, 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.*