# DSL ROBOT vs TailScope

The clearest difference is in-app purchases: DSL ROBOT at none against TailScope's 1. DSL ROBOT also leads on iOS requirement (13.0 vs 17.0). TailScope's advantage is update cadence (every 3 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. TailScope sells 1 one-off in-app purchase. DSL ROBOT asks for nothing beyond the download.

DSL ROBOT ships an update every 6 months, TailScope every 3 weeks. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | DSL ROBOT | TailScope |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Size | 47 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Sublue Underwater AI Co., Ltd](https://appshunter.io/developer/1838599859) | [Shanghai Fengcong Technology Co., Ltd.](https://appshunter.io/developer/1640023165) |

## What reviewers say

### DSL ROBOT

[App page](https://appshunter.io/ios/app/dsl-robot/id6630366507)

**In-app purchases:** none


### TailScope

[App page](https://appshunter.io/ios/app/tailscope/id6802478511)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TailScope Pro Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is DSL ROBOT free?

DSL ROBOT is free to download, with no in-app purchases.

### Is TailScope free?

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

### Do DSL ROBOT or TailScope have ads?

Neither DSL ROBOT nor TailScope shows ads.

### Which is updated more often, DSL ROBOT or TailScope?

DSL ROBOT ships an update every 6 months, and TailScope every 3 weeks. Most recently, DSL ROBOT was updated on October 27, 2026 and TailScope on October 29, 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.*