# ReadMaster vs 積DROP

The clearest difference is update cadence: 積DROP at every 9 days against ReadMaster's every 2 months. 積DROP also leads on device support (3 vs 1) and iOS requirement (15.5 vs 18.5). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ReadMaster sells 2 in-app purchases, starting at $0.99 per month and 積DROP sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReadMaster ships an update every 2 months, 積DROP every 9 days. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ReadMaster | 積DROP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 95 MB | 57 MB |
| Requires iOS | 18.5 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TEMMA SUZUKI](https://appshunter.io/developer/1846787341) | [ForeGroove Inc.](https://appshunter.io/developer/1837127960) |

## What reviewers say

### ReadMaster

[App page](https://appshunter.io/ios/app/readmaster-reading-tracker/id6754158071)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadMaster Plus 1ヶ月 | $0.99 | per month |
| ReadMaster Plus 6ヶ月 | $5.99 | per 6 months |


### 積DROP

[App page](https://appshunter.io/ios/app/drop/id6781525555)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Small Coffee | $0.49 | one-time |
| A Light Meal | $2.99 | one-time |
| A Lunch | $5.99 | one-time |
| A Dinner Treat | $11.99 | one-time |


## Frequently asked questions

### Is ReadMaster free?

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

### Is 積DROP free?

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

### Do ReadMaster or 積DROP have ads?

Neither ReadMaster nor 積DROP shows ads.

### Which is updated more often, ReadMaster or 積DROP?

ReadMaster ships an update every 2 months, and 積DROP every 9 days. Most recently, ReadMaster was updated on September 23, 2026 and 積DROP on September 10, 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.*