# m/z vs Habit Tracker

The clearest difference is review sentiment: m/z at 100% against Habit Tracker's 0%. m/z also leads on rating (3.6 vs 3.0) and in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Habit Tracker sells 2 in-app purchases, starting at $1.99 per month. m/z asks for nothing beyond the download.

m/z holds the better App Store score, 3.6 against 3.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 100% of m/z's written reviews are positive against 0% of Habit Tracker's.

m/z ships an update every 5 weeks, Habit Tracker every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | m/z | Habit Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (5 ratings)](https://appshunter.io/ios/app/mz/id1117272212/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/habit-tracker-doinggood/id6743095257/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | **Free** | Freemium |
| Size | 3.6 GB | 2 MB |
| Requires iOS | **6.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kirill Blinov](https://appshunter.io/developer/630833420) | [Alec Wilson](https://appshunter.io/developer/1801287674) |

## What reviewers say

### m/z

[App page](https://appshunter.io/ios/app/mz/id1117272212)

Instantly search a vast database of chemical structures based on their exact mass. This tool helps identify compounds with masses under 340 Da, drawing from millions of entries.

**Highlights:** Find chemical structures by exact mass, Search database of known structures, Database includes over 35 million compounds, Supports masses under 340 Da, Utilizes PubChem compounds database

**Features:** macOS Compatibility

**In-app purchases:** none


### Habit Tracker

[App page](https://appshunter.io/ios/app/habit-tracker-doinggood/id6743095257)

This app helps you build positive routines, track habits, and reflect on your emotions. It offers flexible tracking, journaling, and personalized reminders to support your wellness journey. Visualize your progress and use templates to kickstart your personal growth.

**Highlights:** Flexible habit tracking (daily, weekly, monthly), Emotional journaling and mood reflection, Apple Health integration, Progress visualization with streaks and badges, Personalized reminders and motivational nudges, Habit templates and prompts

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DoingGood+ Monthly | $1.99 | per month |
| DoingGood+ Yearly | $17.99 | per year |


## Frequently asked questions

### Is m/z free?

m/z is free to download, with no in-app purchases.

### Is Habit Tracker free?

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

### Which has better reviews, m/z or Habit Tracker?

m/z is rated higher. m/z averages 3.6 out of 5 from 5 ratings, while Habit Tracker averages 3.0 from 2 ratings.

### Do m/z or Habit Tracker have ads?

Neither m/z nor Habit Tracker shows ads.

### Which is updated more often, m/z or Habit Tracker?

m/z ships an update every 5 weeks, and Habit Tracker every 5 months. Most recently, m/z was updated on October 24, 2026 and Habit Tracker on October 24, 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.*