# PurEst® vs StudySync

The clearest difference is in-app purchases: PurEst® at none against StudySync's 1. PurEst® also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). StudySync's advantage is update cadence (daily vs every 5 months). On price and ads there is nothing between them.

Both are free to download. StudySync sells 1 one-off in-app purchase. PurEst® asks for nothing beyond the download.

PurEst® ships an update every 5 months, StudySync daily. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PurEst® | StudySync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/studysync/id6760888147/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 22 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Modality Apps](https://appshunter.io/developer/1122416398) | [麦彤 杨](https://appshunter.io/developer/1886593453) |

## What reviewers say

### PurEst®

[App page](https://appshunter.io/ios/app/purest/id1122416399)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 PurEst® free?

PurEst® is free to download, with no in-app purchases.

### Is StudySync free?

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

### Do PurEst® or StudySync have ads?

Neither PurEst® nor StudySync shows ads.

### Which is updated more often, PurEst® or StudySync?

PurEst® ships an update every 5 months, and StudySync daily. Most recently, PurEst® was updated on October 26, 2026 and StudySync on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*