# StuLOG vs 逆算勉強

The clearest difference is in-app purchases: 逆算勉強 at none against StuLOG's 1. 逆算勉強 also leads on ads (none vs shown) and update cadence (daily vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. StuLOG sells 1 one-off in-app purchase. 逆算勉強 asks for nothing beyond the download.

StuLOG ships an update every 2 months, 逆算勉強 daily. The most recent releases landed on August 23, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | StuLOG | 逆算勉強 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/stulog/id1461679466/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 43.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 51 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akito Ibaraki](https://appshunter.io/developer/1451523461) | [Kodai Maki](https://appshunter.io/developer/1674346013) |

## What reviewers say

### StuLOG

[App page](https://appshunter.io/ios/app/stulog/id1461679466)

Track your daily study time and exam scores with detailed visual analysis. Customize subjects and monitor your progress towards academic goals. Seamlessly sync data across devices using iCloud.

**Highlights:** Daily study time tracking, Exam score recording, Customizable subject names, Monthly/Annual summary reports, Graph-based analysis, iCloud data synchronization

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Export Csv | $1.99 | one-time |


### 逆算勉強

[App page](https://appshunter.io/ios/app/id6445865041)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StuLOG free?

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

### Is 逆算勉強 free?

逆算勉強 is free to download, with no in-app purchases.

### Do StuLOG or 逆算勉強 have ads?

StuLOG shows ads; 逆算勉強 does not.

### Which is updated more often, StuLOG or 逆算勉強?

StuLOG ships an update every 2 months, and 逆算勉強 daily. Most recently, StuLOG was updated on August 23, 2026 and 逆算勉強 on June 1, 2026.

---

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