# doable vs Datum

The clearest difference is update cadence: Datum at every 2 days against doable's every 3 weeks. doable's advantage is iOS requirement (9.0 vs 26.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. doable sells 2 in-app purchases, starting at $5.49 per year and Datum sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

doable ships an update every 3 weeks, Datum every 2 days. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | doable | Datum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/datum-private-data-tracker/id6784786088/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 48 MB | 98 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kalesh Sasidharan](https://appshunter.io/developer/1518654986) | [EKPQA, LLC](https://appshunter.io/developer/383063546) |

## What reviewers say

### doable

[App page](https://appshunter.io/ios/app/doable-habit-designer/id1559615533)

This app helps you build positive habits and break negative ones using a scientific method of positive reinforcement. It allows you to pair tasks with desired rewards, motivating you to complete them and fostering a sense of achievement.

**Highlights:** Positive reinforcement method, Task-reward pairing, Motivates task completion, Helps break bad habits, Tracks task-reward cycles, Acts as a motivational to-do list

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium: Annual Subscription | $5.49 | per year |
| doable Premium 1-Time Purchase | $2.99 | one-time |


### Datum

[App page](https://appshunter.io/ios/app/datum-private-data-tracker/id6784786088)

This app allows you to track virtually anything, from daily habits to specific metrics, with customizable input methods and data visualization. It prioritizes user privacy by keeping all data on your device and offers extensive personalization options.

**Highlights:** Track anything with custom units, Multiple input styles (stepper, tally, dial), Bundle trackers into check-ins, Pre-made check-in templates, Customizable dashboard and charts, Attach photos, voice notes, and text, Integrates with Siri and Shortcuts

**Features:** Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculated Fields | $7.99 | one-time |
| Attachments | $7.99 | one-time |
| Automations | $7.99 | one-time |
| Unlimited Trackers | $7.99 | one-time |
| Connected Trackers | $7.99 | one-time |
| Datum Pro | $19.99 | one-time |
| Early Adopter | $49.99 | one-time |


## Frequently asked questions

### Is doable free?

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

### Is Datum free?

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

### Do doable or Datum have ads?

Neither doable nor Datum shows ads.

### Which is updated more often, doable or Datum?

doable ships an update every 3 weeks, and Datum every 2 days. Most recently, doable was updated on October 8, 2026 and Datum on October 2, 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.*