# Smart Sack vs WhichLocker

The clearest difference is price: Smart Sack at Free against WhichLocker's $0.99. Smart Sack also leads on iOS requirement (12.2 vs 17.0). WhichLocker's advantage is update cadence (every 6 months vs every 13 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Smart Sack is free to download; WhichLocker costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Smart Sack against 5.0 for WhichLocker. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Smart Sack ships an update every 13 months, WhichLocker every 6 months. The most recent releases landed on September 30, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Smart Sack | WhichLocker |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/smart-sack/id1480624088/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/whichlocker/id6744832298/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 6 months** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 47 MB |
| Requires iOS | **12.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Iguanavation Inc](https://appshunter.io/developer/1480624087) | [Torn Metal LLC](https://appshunter.io/developer/729464375) |

## What reviewers say

### Smart Sack

[App page](https://appshunter.io/ios/app/smart-sack/id1480624088)

This app connects to a smart sack to track your kicks or juggles. It displays your current score, best scores, and can announce your progress audibly. The app supports background operation for uninterrupted play and offers customizable voice and language options.

**Highlights:** Real-time kick and juggle scoring, Displays ongoing, best, and best ever scores, Audible score announcements, Customizable voice and language options, Background operation support, Connects to unique smart sack names

**Features:** macOS Compatibility

**In-app purchases:** none


### WhichLocker

[App page](https://appshunter.io/ios/app/whichlocker/id6744832298)

This utility app helps you easily track and remember important numbers like locker combinations, parking spots, or room numbers. Access your saved values instantly through widgets and Apple Watch complications, with added support for Siri shortcuts.

**Highlights:** Save numbers with custom labels and colors, Stack temporary entries, Counter mode with +/- controls, Home Screen and Lock Screen widgets, Apple Watch complications, Siri shortcuts integration, Cross-device sync

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Smart Sack free?

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

### Is WhichLocker free?

WhichLocker costs $0.99, with no in-app purchases.

### Which has better reviews, Smart Sack or WhichLocker?

Smart Sack and WhichLocker are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Smart Sack or WhichLocker have ads?

Neither Smart Sack nor WhichLocker shows ads.

### Which is updated more often, Smart Sack or WhichLocker?

Smart Sack ships an update every 13 months, and WhichLocker every 6 months. Most recently, Smart Sack was updated on September 30, 2026 and WhichLocker on June 4, 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.*