# Habit Streaks | 1‑tap tracker vs Understudy

The clearest difference is in-app purchases: Habit Streaks | 1‑tap tracker at none against Understudy's 5. Habit Streaks | 1‑tap tracker also leads on update cadence (every 10 days vs monthly). Understudy's advantage is ads (none vs shown) and iOS requirement (14.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Understudy sells 5 in-app purchases, starting at $4.99 per month. Habit Streaks | 1‑tap tracker asks for nothing beyond the download.

Habit Streaks | 1‑tap tracker ships an update every 10 days, Understudy monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Habit Streaks | 1‑tap tracker | Understudy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 42 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ryota Yashima](https://appshunter.io/developer/1845144176) | [Shingo Otsuhata](https://appshunter.io/developer/1871224706) |

## What reviewers say

### Habit Streaks | 1‑tap tracker

[App page](https://appshunter.io/ios/app/habit-streaks-1tap-tracker/id6753813021)

This app helps you build lasting habits with a simple, one-tap tracking system. Monitor your progress with clear visuals and stay motivated by growing your streaks. It offers flexibility with rest days and smart reminders to keep you on track without overwhelming you.

**Highlights:** One-tap habit completion, Streak growth visualization, Home screen widgets, Smart reminders, Progress analytics, Rest day option

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

**In-app purchases:** none


### Understudy

[App page](https://appshunter.io/ios/app/understudy-learn-your-lines/id6758158317)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Understudy Pro (Monthly) | $4.99 | per month |
| Understudy Pro (Yearly) | $29.99 | per year |
| Buy me a coffee | $0.99 | one-time |
| Add a donut | $1.99 | one-time |
| Add a sandwich | $3.99 | one-time |


## Frequently asked questions

### Is Habit Streaks | 1‑tap tracker free?

Habit Streaks | 1‑tap tracker is free to download, with no in-app purchases.

### Is Understudy free?

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

### Do Habit Streaks | 1‑tap tracker or Understudy have ads?

Habit Streaks | 1‑tap tracker shows ads; Understudy does not.

### Which is updated more often, Habit Streaks | 1‑tap tracker or Understudy?

Habit Streaks | 1‑tap tracker ships an update every 10 days, and Understudy monthly. Most recently, Habit Streaks | 1‑tap tracker was updated on October 23, 2026 and Understudy 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.*