# Contrigraph vs SessionTap ABA Data Collection

Contrigraph and SessionTap ABA Data Collection are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Contrigraph sells 1 one-off in-app purchase and SessionTap ABA Data Collection sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Contrigraph ships an update every 6 weeks, SessionTap ABA Data Collection every 2 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Contrigraph | SessionTap ABA Data Collection |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 3 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hajime Nakamura](https://appshunter.io/developer/1011217140) | [9592 Solutions UG](https://appshunter.io/developer/1681380056) |

## What reviewers say

### Contrigraph

[App page](https://appshunter.io/ios/app/contrigraph-habit-tracker/id6612007595)

Focus on a single habit with a visual year-long tracker. Log your daily progress with five effort levels and receive timely, non-intrusive reminders. Available in English and Japanese with dark mode support.

**Highlights:** Track a single habit, Year-long visual progress strip, Monthly calendar view, Five effort levels for logging, Dedicated button for today's entry, Smart, context-aware notifications

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### SessionTap ABA Data Collection

[App page](https://appshunter.io/ios/app/sessiontap-aba-data-collection/id6761578371)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $6.99 | one-time |


## Frequently asked questions

### Is Contrigraph free?

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

### Is SessionTap ABA Data Collection free?

SessionTap ABA Data Collection is free to download, with in-app purchases available.

### Do Contrigraph or SessionTap ABA Data Collection have ads?

Neither Contrigraph nor SessionTap ABA Data Collection shows ads.

### Which is updated more often, Contrigraph or SessionTap ABA Data Collection?

Contrigraph ships an update every 6 weeks, and SessionTap ABA Data Collection every 2 months. Most recently, Contrigraph was updated on October 30, 2026 and SessionTap ABA Data Collection on November 5, 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.*