# Stamp Identifier vs TPU

Stamp Identifier and TPU are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Stamp Identifier sells 2 in-app purchases, starting at $4.99 per 7 days and TPU sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stamp Identifier | TPU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 50 MB | 56 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Steve Noel](https://appshunter.io/developer/1788703593) | [Tony-Bradley Ade Fru-Asoh](https://appshunter.io/developer/1613760473) |

## What reviewers say

### Stamp Identifier

[App page](https://appshunter.io/ios/app/stamp-identifier-stamply/id6758634259)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $4.99 | per 7 days |
| Pro (Annual) | $29.99 | per year |


### TPU

[App page](https://appshunter.io/ios/app/tpu-learn-to-code/id6761915681)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Application Fee | $19.99 | one-time |
| Monthly Payment | $19.99 | one-time |
| Tuition Payment 3 of 3 | $89.99 | one-time |
| Tuition Payment 2 of 3 | $89.99 | one-time |
| Tuition Payment 2 of 2 | $139.99 | one-time |
| Tuition Payment 1 of 3 | $139.99 | one-time |
| Tuition Payment 1 of 2 | $169.99 | one-time |
| Full Tuition | $299.00 | one-time |


## Frequently asked questions

### Is Stamp Identifier free?

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

### Is TPU free?

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

### Do Stamp Identifier or TPU have ads?

Neither Stamp Identifier nor TPU shows ads.

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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.*