# QR Code Inspector vs Future Letter

The clearest difference is in-app purchases: QR Code Inspector at none against Future Letter's 3. Future Letter's advantage is update cadence (monthly vs every 25 months) and iOS requirement (13.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Future Letter sells 3 one-off in-app purchases. QR Code Inspector asks for nothing beyond the download.

QR Code Inspector ships an update every 25 months, Future Letter monthly. The most recent releases landed on September 27, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | QR Code Inspector | Future Letter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Monthly** |
| Size | 7 MB | 50 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Easy Simple Smart](https://appshunter.io/developer/1517332870) | [锡球 刘](https://appshunter.io/developer/1886999777) |

## What reviewers say

### QR Code Inspector

[App page](https://appshunter.io/ios/app/qr-code-inspector/id6474573609)

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

**In-app purchases:** none


### Future Letter

[App page](https://appshunter.io/ios/app/future-letter-time-capsule/id6789511794)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Recharge 5 Points | $0.99 | one-time |
| Recharge 18 Points | $2.99 | one-time |
| Recharge 50 Points | $7.99 | one-time |


## Frequently asked questions

### Is QR Code Inspector free?

QR Code Inspector is free to download, with no in-app purchases.

### Is Future Letter free?

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

### Do QR Code Inspector or Future Letter have ads?

Neither QR Code Inspector nor Future Letter shows ads.

### Which is updated more often, QR Code Inspector or Future Letter?

QR Code Inspector ships an update every 25 months, and Future Letter monthly. Most recently, QR Code Inspector was updated on September 27, 2026 and Future Letter 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.*