# John Watson vs TANK TINKER

The clearest difference is update cadence: John Watson at fortnightly against TANK TINKER's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

John Watson ships an update fortnightly, TANK TINKER every 6 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | John Watson | TANK TINKER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Size | 181 MB | 166 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RAPID ACCELERATION INDIA PRIVATE LIMITED](https://appshunter.io/developer/1550929304) | [Mostwell Limited](https://appshunter.io/developer/1689350683) |

## What reviewers say

### John Watson

[App page](https://appshunter.io/ios/app/john-watson/id1659939025)

**In-app purchases:** none


### TANK TINKER

[App page](https://appshunter.io/ios/app/tank-tinker/id6449481063)

**In-app purchases:** none


## Frequently asked questions

### Is John Watson free?

John Watson is free to download, with no in-app purchases.

### Is TANK TINKER free?

TANK TINKER is free to download, with no in-app purchases.

### Do John Watson or TANK TINKER have ads?

Neither John Watson nor TANK TINKER shows ads.

### Which is updated more often, John Watson or TANK TINKER?

John Watson ships an update fortnightly, and TANK TINKER every 6 months. Most recently, John Watson was updated on October 6, 2026 and TANK TINKER on October 12, 2026.

---

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