# 习惯岛 vs StudySync

The clearest difference is update cadence: StudySync at daily against 习惯岛's every 5 weeks. 习惯岛's advantage is ratings volume (4 vs 1) and device support (3 vs 1). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. 习惯岛 sells 9 one-off in-app purchases and StudySync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for 习惯岛 against 5.0 for StudySync. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

习惯岛 ships an update every 5 weeks, StudySync daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 习惯岛 | StudySync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/id1673628986/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/studysync/id6760888147/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 21 MB | 22 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [广博 郝](https://appshunter.io/developer/1173506771) | [麦彤 杨](https://appshunter.io/developer/1886593453) |

## What reviewers say

### 习惯岛

[App page](https://appshunter.io/ios/app/id1673628986)

This app gamifies habit tracking by allowing users to create custom habit cards and earn in-game currency and experience. Use your rewards to decorate your personal island, unlock new items, and progress through levels. It aims to make habit formation more engaging and rewarding.

**Highlights:** Gamified habit tracking, Customizable habit cards, Island decoration and expansion, In-game currency and experience rewards, Cloud synchronization, Statistical charts, Weekly bonus chests

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLUS 计划（1 个月） | $0.99 | one-time |
| PLUS 计划（6 个月） | $3.99 | one-time |
| PLUS 计划（6 个月） | $4.99 | one-time |
| PLUS 计划（1 年） | $4.99 | one-time |
| PLUS 计划（1 年） | $6.99 | one-time |
| PLUS 计划（1 年） | $7.99 | one-time |
| PLUS 计划（终身） | $9.99 | one-time |
| PLUS 计划（终身） | $12.99 | one-time |
| PLUS 计划（终身） | $19.99 | one-time |


### StudySync

[App page](https://appshunter.io/ios/app/studysync/id6760888147)

Manage your academic life with this comprehensive tool. Track deadlines, collaborate on projects with friends, and boost focus with a Pomodoro timer. Visualize your progress and stay organized throughout the school year.

**Highlights:** Countdown events for deadlines, Pomodoro timer with virtual study rooms, Task management with priority levels, Grade calculator for target scores, Team project collaboration and scheduling, Social features for friends and nudges, Calendar sync and visual indicators

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StudySync Pro | $2.99 | one-time |


## Frequently asked questions

### Is 习惯岛 free?

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

### Is StudySync free?

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

### Which has better reviews, 习惯岛 or StudySync?

习惯岛 and StudySync are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do 习惯岛 or StudySync have ads?

Neither 习惯岛 nor StudySync shows ads.

### Which is updated more often, 习惯岛 or StudySync?

习惯岛 ships an update every 5 weeks, and StudySync daily. Most recently, 习惯岛 was updated on November 3, 2026 and StudySync on October 31, 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.*