# Collectify Banknotes vs Schlummer

The clearest difference is in-app purchases: Collectify Banknotes at none against Schlummer's 3. Collectify Banknotes also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Schlummer sells 3 in-app purchases, starting at $3.99 per month. Collectify Banknotes asks for nothing beyond the download.

Collectify Banknotes ships an update every 2 weeks, Schlummer every 3 weeks. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Collectify Banknotes | Schlummer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 39 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alper Emin Yardimci](https://appshunter.io/developer/1874396613) | [Levin David Schwab](https://appshunter.io/developer/1896432297) |

## What reviewers say

### Collectify Banknotes

[App page](https://appshunter.io/ios/app/collectify-banknotes/id6758889763)

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

**In-app purchases:** none


### Schlummer

[App page](https://appshunter.io/ios/app/schlummer-sleep-tracker/id6783421618)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Schlummer Pro Monthly | $3.99 | per month |
| Schlummer Pro Yearly | $24.99 | per year |
| Schlummer Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Collectify Banknotes free?

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

### Is Schlummer free?

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

### Do Collectify Banknotes or Schlummer have ads?

Schlummer shows ads; Collectify Banknotes does not.

### Which is updated more often, Collectify Banknotes or Schlummer?

Collectify Banknotes ships an update every 2 weeks, and Schlummer every 3 weeks. Most recently, Collectify Banknotes was updated on October 3, 2026 and Schlummer on October 14, 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.*