# ISD Go vs PR Japan Guide

The clearest difference is in-app purchases: ISD Go at none against PR Japan Guide's 1. ISD Go also leads on update cadence (weekly vs fortnightly) and device support (4 vs 1). On price and ads there is nothing between them.

Both are free to download. PR Japan Guide sells 1 one-off in-app purchase. ISD Go asks for nothing beyond the download.

ISD Go ships an update weekly, PR Japan Guide fortnightly. The most recent releases landed on November 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ISD Go | PR Japan Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (31 ratings)](https://appshunter.io/ios/app/isd-go/id1447072980/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 18.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 26 MB | 4 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [深圳艾斯特创新科技有限公司](https://appshunter.io/developer/1405370693) | [shuo zhou](https://appshunter.io/developer/6784130049) |

## What reviewers say

### ISD Go

[App page](https://appshunter.io/ios/app/isd-go/id1447072980)

Control and manage wireless smart devices with a user-friendly interface. Connect and operate devices via Bluetooth, and receive automatic firmware updates when new versions are available.

**Highlights:** Connect BLE smart devices, Wireless device operation, Automatic firmware detection, Firmware upgrades, User-friendly interface

**In-app purchases:** none

**What reviewers like**

- 👍 Easy firmware updates (sometimes)
- 👍 Practical app interface
- 👍 Works for some users
- 👍 Good hardware functionality (without app)

**What reviewers complain about**

- 🐛 Frequent connection drops (Bluetooth)
- 🐛 Firmware update failures
- 🐛 Device not detected
- 🐛 App crashes
- 🐛 Inaccurate readings/settings

**Reported bugs**

- App crashes during updates
- Device not recognized by app
- Abnormal network connection for firmware server
- App not updated for current iOS
- Bluetooth not reconnecting

**Requested features**

- Update app for current iOS
- Fix firmware update issues
- Improve Bluetooth connection stability
- Allow discharging to lower voltages (e.g., 0.0V)
- Increase discharge current options


### PR Japan Guide

[App page](https://appshunter.io/ios/app/pr-japan-guide/id6784130047)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PR Preparation Pack | $5.99 | one-time |


## Frequently asked questions

### Is ISD Go free?

ISD Go is free to download, with no in-app purchases.

### Is PR Japan Guide free?

PR Japan Guide is free to download, with in-app purchases available.

### Do ISD Go or PR Japan Guide have ads?

Neither ISD Go nor PR Japan Guide shows ads.

### Which is updated more often, ISD Go or PR Japan Guide?

ISD Go ships an update weekly, and PR Japan Guide fortnightly. Most recently, ISD Go was updated on November 2, 2026 and PR Japan Guide on October 9, 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.*