# momblock vs SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録

The clearest difference is review sentiment: momblock at 57% against SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録's 0%. momblock also leads on iOS requirement (16.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. momblock sells 3 in-app purchases, starting at $5.99 per month and SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 sells 8 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

momblock ships an update every 3 weeks, SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 every 2 weeks. The most recent releases landed on September 23, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | momblock | SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **57.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 45 MB | 110 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ibuki Hara](https://appshunter.io/developer/6791958118) | [Ryogo Owashi](https://appshunter.io/developer/1852190898) |

## What reviewers say

### momblock

[App page](https://appshunter.io/ios/app/momblock-app-blocker/id6794782013)

This app helps you break bad digital habits by using accountability. When you try to open a blocked app, a chosen contact's photo and message appear, reminding you to stay on track. It offers features like daily time budgets and progress tracking to encourage self-control.

**Highlights:** Accountability partner reminders, Daily time budgets, App and site blocking, Progress tracking and streaks, Strict mode for intense focus, Customizable notifications

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus (Monthly) | $5.99 | per month |
| Plus (Yearly) | $39.99 | per year |
| Plus (Yearly) | $39.99 | per year |


### SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録

[App page](https://appshunter.io/ios/app/sideflow/id6801014804)

This app helps you focus by combining a timer with your favorite music from Apple Music or Spotify. It visually represents your focus sessions as collectible tickets and offers features to block distracting apps and track your progress over time.

**Highlights:** Focus timer with music integration (Apple Music/Spotify), App and website blocking during focus sessions, Focus sessions visualized as collectible tickets, Progress tracking and analytics (weekly, monthly, yearly), Customizable timer interface with rewards, Social features to connect with friends' focus progress

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SideFlow Premium | $2.99 | per month |
| SideFlow Premium | $17.99 | per year |
| SideFlow Premium | $22.99 | per year |
| SideFlow 120コイン | $0.99 | one-time |
| SideFlow 400コイン | $2.99 | one-time |
| SideFlow 900コイン | $5.99 | one-time |
| プレーヤーパーツ 3個 | $5.99 | one-time |
| SideFlow 2000コイン | $11.99 | one-time |


## Frequently asked questions

### Is momblock free?

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

### Is SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 free?

SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 is free to download, with in-app purchases available.

### Do momblock or SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 have ads?

Both momblock and SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 show ads.

### Which is updated more often, momblock or SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録?

momblock ships an update every 3 weeks, and SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 every 2 weeks. Most recently, momblock was updated on September 23, 2026 and SideFlow｜集中タイマー・スマホ制限・勉強と仕事の記録 on September 27, 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.*