# TANGRAM IoT 3.0 vs Smri

The clearest difference is in-app purchases: TANGRAM IoT 3.0 at none against Smri's 2. TANGRAM IoT 3.0 also leads on iOS requirement (15.6 vs 17.0). Smri's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Smri sells 2 in-app purchases, starting at $3.99 per month. TANGRAM IoT 3.0 asks for nothing beyond the download.

TANGRAM IoT 3.0 ships an update every 3 weeks, Smri every 2 days. The most recent releases landed on November 8, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | TANGRAM IoT 3.0 | Smri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 56 MB | 43 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TANGRAM Company Limited.](https://appshunter.io/developer/1480182974) | [chung-Ying Xie](https://appshunter.io/developer/1292685929) |

## What reviewers say

### TANGRAM IoT 3.0

[App page](https://appshunter.io/ios/app/tangram-iot-30/id6680157666)

**In-app purchases:** none


### Smri

[App page](https://appshunter.io/ios/app/smri/id6747955368)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Annual | $39.99 | per year |


## Frequently asked questions

### Is TANGRAM IoT 3.0 free?

TANGRAM IoT 3.0 is free to download, with no in-app purchases.

### Is Smri free?

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

### Do TANGRAM IoT 3.0 or Smri have ads?

Neither TANGRAM IoT 3.0 nor Smri shows ads.

### Which is updated more often, TANGRAM IoT 3.0 or Smri?

TANGRAM IoT 3.0 ships an update every 3 weeks, and Smri every 2 days. Most recently, TANGRAM IoT 3.0 was updated on November 8, 2026 and Smri on October 28, 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.*