# Logger Habit Tracker vs Quartet by Affirmi

The clearest difference is rating: Quartet by Affirmi at 5.0 against Logger Habit Tracker's 4.2. Quartet by Affirmi also leads on in-app purchases (none vs 3) and update cadence (daily vs weekly). Logger Habit Tracker's advantage is ratings volume (21 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Logger Habit Tracker sells 3 in-app purchases, starting at $1.99 per month. Quartet by Affirmi asks for nothing beyond the download.

Quartet by Affirmi holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Logger Habit Tracker has 21 ratings behind it against 1, so its average is the more settled of the two.

Logger Habit Tracker ships an update weekly, Quartet by Affirmi daily. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Logger Habit Tracker | Quartet by Affirmi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (21 ratings)](https://appshunter.io/ios/app/logger-habit-tracker/id6739143599/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quartet-by-affirmi/id6809052712/reviews)** |
| Number of ratings | **21** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 23 MB | 21 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thumbley LLC](https://appshunter.io/developer/1783824605) | [Affirmi Inc.](https://appshunter.io/developer/1643339370) |

## What reviewers say

### Logger Habit Tracker

[App page](https://appshunter.io/ios/app/logger-habit-tracker/id6739143599)

Visualize your daily habits to understand your progress over time. Log positive or negative activities to gain insights into your day, week, month, or year. Make informed decisions about your routines.

**Highlights:** Visualize habits across timeframes, Track positive and negative habits, Log daily activities, Gain insights into routines, Customizable tracking

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Unlimited Logging | $1.99 | per month |
| Yearly Unlimited Logging | $19.99 | per year |
| Lifetime Unlimited Logging | $39.99 | one-time |


### Quartet by Affirmi

[App page](https://appshunter.io/ios/app/quartet-by-affirmi/id6809052712)

This app simultaneously queries four AI models to provide a unified answer and highlight areas of disagreement. It remembers conversation history for follow-up questions and offers a credit system for usage, with an optional subscription for more features.

**Highlights:** Parallel AI model querying, Unified answer generation, Disagreement highlighting, Conversation memory, Credit-based usage, Subscription option

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

**In-app purchases:** none


## Frequently asked questions

### Is Logger Habit Tracker free?

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

### Is Quartet by Affirmi free?

Quartet by Affirmi is free to download, with no in-app purchases.

### Which has better reviews, Logger Habit Tracker or Quartet by Affirmi?

Quartet by Affirmi is rated higher. Logger Habit Tracker averages 4.2 out of 5 from 21 ratings, while Quartet by Affirmi averages 5.0 from 1 ratings.

### Do Logger Habit Tracker or Quartet by Affirmi have ads?

Neither Logger Habit Tracker nor Quartet by Affirmi shows ads.

### Which is updated more often, Logger Habit Tracker or Quartet by Affirmi?

Logger Habit Tracker ships an update weekly, and Quartet by Affirmi daily. Most recently, Logger Habit Tracker was updated on November 4, 2026 and Quartet by Affirmi on October 31, 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.*