# Tempal Assistant vs Histeva

The clearest difference is in-app purchases: Tempal Assistant at none against Histeva's 2. Histeva's advantage is update cadence (daily vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Histeva sells 2 in-app purchases, starting at $5.99 per month. Tempal Assistant asks for nothing beyond the download.

Tempal Assistant ships an update every 3 weeks, Histeva daily. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Tempal Assistant | Histeva |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 6 MB | 67 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [GUANGDONG GENIAL TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1606200237) | [MeguMethod s.r.o.](https://appshunter.io/developer/889708670) |

## What reviewers say

### Tempal Assistant

[App page](https://appshunter.io/ios/app/tempal-assistant/id6744838867)

**In-app purchases:** none


### Histeva

[App page](https://appshunter.io/ios/app/histeva-histamine-diary/id6808139682)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $5.99 | per month |
| Premium - Yearly | $49.99 | per year |


## Frequently asked questions

### Is Tempal Assistant free?

Tempal Assistant is free to download, with no in-app purchases.

### Is Histeva free?

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

### Do Tempal Assistant or Histeva have ads?

Neither Tempal Assistant nor Histeva shows ads.

### Which is updated more often, Tempal Assistant or Histeva?

Tempal Assistant ships an update every 3 weeks, and Histeva daily. Most recently, Tempal Assistant was updated on October 28, 2026 and Histeva on October 31, 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.*