# Rainfall vs IDknow

The clearest difference is in-app purchases: Rainfall at none against IDknow's 2. IDknow's advantage is update cadence (every 11 days vs every 2 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. IDknow sells 2 in-app purchases, starting at $1.99 per month. Rainfall asks for nothing beyond the download.

Rainfall ships an update every 2 months, IDknow every 11 days. The most recent releases landed on June 7, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Rainfall | IDknow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rainfall-digital-wallet/id6504632771/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free | — |
| Size | 45 MB | 61 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rainf4ll, Inc.](https://appshunter.io/developer/1651735845) | [Shad Hardy](https://appshunter.io/developer/1842953663) |

## What reviewers say

### Rainfall

[App page](https://appshunter.io/ios/app/rainfall-digital-wallet/id6504632771)

Manage digital representations of your physical assets, view authenticity certificates, and prove ownership. Transfer assets, receive them from brands, and document their history. Track, authenticate, and manage your valuable possessions.

**Highlights:** Store digital asset representations, View authenticity certificates, Prove ownership, Transfer ownership, Receive assets from brands, Add historical events

**In-app purchases:** none


### IDknow

[App page](https://appshunter.io/ios/app/idknow/id6753190243)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Yearly | $21.49 | per year |


## Frequently asked questions

### Is Rainfall free?

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

### Is IDknow free?

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

### Do Rainfall or IDknow have ads?

Neither Rainfall nor IDknow shows ads.

### Which is updated more often, Rainfall or IDknow?

Rainfall ships an update every 2 months, and IDknow every 11 days. Most recently, Rainfall was updated on June 7, 2026 and IDknow on September 19, 2026.

---

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