# Study Time Record chart vs Stackd

The clearest difference is in-app purchases: Study Time Record chart at none against Stackd's 1. Stackd's advantage is ads (none vs shown) and update cadence (fortnightly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stackd sells 1 one-off in-app purchase. Study Time Record chart asks for nothing beyond the download.

Study Time Record chart ships an update every 2 months, Stackd fortnightly. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Study Time Record chart | Stackd |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 7 MB | 3 MB |
| Requires iOS | **17.6** | 18 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [YUTAKA IZUMIYAMA](https://appshunter.io/developer/1657248429) | [Nene Nakagawa](https://appshunter.io/developer/1821103094) |

## What reviewers say

### Study Time Record chart

[App page](https://appshunter.io/ios/app/study-time-record-chart/id6738596821)

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

**In-app purchases:** none


### Stackd

[App page](https://appshunter.io/ios/app/stackd-study-timer-and-tracker/id6761293821)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackd Pro | $1.99 | one-time |


## Frequently asked questions

### Is Study Time Record chart free?

Study Time Record chart is free to download, with no in-app purchases.

### Is Stackd free?

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

### Do Study Time Record chart or Stackd have ads?

Study Time Record chart shows ads; Stackd does not.

### Which is updated more often, Study Time Record chart or Stackd?

Study Time Record chart ships an update every 2 months, and Stackd fortnightly. Most recently, Study Time Record chart was updated on September 15, 2026 and Stackd on September 14, 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.*