# SmartFields vs Keizoku

The clearest difference is iOS requirement: SmartFields at 15.0 against Keizoku's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SmartFields sells 6 one-off in-app purchases and Keizoku sells 11 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SmartFields ships an update fortnightly, Keizoku every 4 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SmartFields | Keizoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (22 ratings)](https://appshunter.io/ios/app/keizoku-simple-habit-tracker/id6751934729/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 106 MB | 65 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oleh Sieroochenko](https://appshunter.io/developer/1804893012) | [Blane Steckline](https://appshunter.io/developer/1837601503) |

## What reviewers say

### SmartFields

[App page](https://appshunter.io/ios/app/smartfields/id6743850679)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 AI-запитів | $0.99 | one-time |
| 50 AI Requests | $1.99 | one-time |
| 100 AI Requests | $2.99 | one-time |
| Mini Plan | $6.99 | one-time |
| Pro Plan | $14.99 | one-time |
| Expert Plan | $29.99 | one-time |


### Keizoku

[App page](https://appshunter.io/ios/app/keizoku-simple-habit-tracker/id6751934729)

This app offers a minimalist approach to habit tracking with a beautiful, notebook-inspired design. It focuses on simple, consistent daily tracking without clutter or pressure, helping users build momentum in a calm, journal-like interface.

**Highlights:** Minimalist grid-based daily habit tracking, Notebook-inspired design, Gentle daily reminders, Horizontal and vertical viewing modes, Archive and revisit habits, Export and import habit data, iCloud syncing

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keizoku Pro | $0.99 | per 7 days |
| Keizoku Pro | $1.99 | per 7 days |
| Keizoku Pro | $1.99 | per month |
| Keizoku Pro | $4.99 | per month |
| Keizoku Pro | $14.99 | per year |
| Keizoku Pro | $24.99 | per year |
| Keizoku Pro | $29.99 | per year |
| Keizoku Pro | $29.99 | per year |
| Keizoku Pro - Lifetime | $19.99 | one-time |
| Keizoku Pro - Lifetime | $29.99 | one-time |
| Keizoku Pro - Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is SmartFields free?

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

### Is Keizoku free?

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

### Do SmartFields or Keizoku have ads?

Neither SmartFields nor Keizoku shows ads.

### Which is updated more often, SmartFields or Keizoku?

SmartFields ships an update fortnightly, and Keizoku every 4 weeks. Most recently, SmartFields was updated on October 24, 2026 and Keizoku on October 30, 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.*