# Otteretto vs Parcel Locker master

The clearest difference is in-app purchases: Parcel Locker master at none against Otteretto's 1. Parcel Locker master also leads on update cadence (every 2 days vs every 9 months) and iOS requirement (12.0 vs 14.0). Otteretto's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Otteretto sells 1 one-off in-app purchase. Parcel Locker master asks for nothing beyond the download.

Otteretto ships an update every 9 months, Parcel Locker master every 2 days. The most recent releases landed on June 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Otteretto | Parcel Locker master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/otteretto/id1608448950/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 14 MB | 52 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Klimowski](https://appshunter.io/developer/1608448952) | [Oliver Rozsa](https://appshunter.io/developer/1504244348) |

## What reviewers say

### Otteretto

[App page](https://appshunter.io/ios/app/otteretto/id1608448950)

A unique puzzle game where players create palindromes using letters and otters. It offers multiple endlessly replayable game modes, including daily challenges and competitive leaderboards.

**Highlights:** Unique palindrome puzzle mechanics, Five endlessly replayable game modes, Daily global competition, Logical reasoning puzzles, Competitive cross-platform leaderboards, No ads or microtransactions

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game Upgrade | $2.99 | one-time |


### Parcel Locker master

[App page](https://appshunter.io/ios/app/parcel-locker-master/id6651837512)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Otteretto free?

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

### Is Parcel Locker master free?

Parcel Locker master is free to download, with no in-app purchases.

### Do Otteretto or Parcel Locker master have ads?

Parcel Locker master shows ads; Otteretto does not.

### Which is updated more often, Otteretto or Parcel Locker master?

Otteretto ships an update every 9 months, and Parcel Locker master every 2 days. Most recently, Otteretto was updated on June 21, 2026 and Parcel Locker master on September 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.*