# SlimCD for iPhone

> Mobile credit/debit card authorization for retail environments. (iPhone/iPad app by Slim CD, Inc.)

- Source: https://appshunter.io/ios/app/slimcd-for-iphone/id469823710 (this page in markdown: same URL + `.md`)
- Developer: [Slim CD, Inc](https://appshunter.io/developer/467524326)
- Category: Finance, Business
- Price: Free
- Rating: 4.33/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 21 MB
- Languages: English
- Released: 2011-10-14
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/slimcd-for-iphone/id469823710/reviews.md

## What is SlimCD for iPhone?

SlimCD for iPhone enables iPhone based credit/debit card authorizations for keyed or swiped (card present) retail environments.  Both keyed and swiped authorizations are conducted over a secure 3G or WIFI connection.

For swiped transactions, the IDTECH Unimag II Mobile MagStripe Reader is used; connected using the iPhone headset port.  When using the UNIMAG II swipe reader, secure authorizations are conducted with minimal keying. PLEASE BE ADVISED THAT THE UNIMAG II MUST BE INJECTED WITH THE SECURE POSX ENCRYPTION KEY.

For keyed transactions, the cardholder number, expiration date, CVV2 code and amount is entered.  Keyed transactions are generally conducted when the card is non-present.

Both keyed and swiped transactions use the SlimCD payment gateway for authorization. All transactions are conducted using either a 3G or WIFI connection using Secure Sockets Layer (SSL) communications.

Prior transactions can also be searched using a comprehensive historical search capability; useful for issuing voids and credits for previously entered transactions as well as for repeating transactions for a given cardholder.

Daily and batch totals can also be reviewed by an administrator.

For printing, you can print to any AirPrint printer on your wifi network.  We also support the following Star Bluetooth printers:
[SM-S220i PPID] 121976-0002
[SM-T300i PPID] 121976-0004

## Key features

- Keyed and swiped card authorizations
- Secure 3G/WIFI connection
- Mobile magstripe reader support
- Historical transaction search
- Batch total review
- AirPrint and Bluetooth printer support

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/slimcd-for-iphone/id469823710/reviews.md

### 5/5 — Just works

*2015-03-24, version 4.0.0*

Best way to take cards

### 5/5 — Great, and getting better!

*2012-11-15, version 2.0*

A great, easy way to accept credit cards. Quick, intuitive app for business owners and their employees. Plus, they're adding features all the time!

## Frequently asked questions about SlimCD for iPhone

### What is SlimCD for iPhone used for?

SlimCD for iPhone enables iPhone-based credit and debit card authorizations for retail environments. It supports both keyed-in transactions and swiped transactions using a compatible mobile magstripe reader.

### How does SlimCD for iPhone handle card swiping?

For swiped transactions, SlimCD for iPhone utilizes the IDTECH Unimag II Mobile MagStripe Reader, which connects via the iPhone headset port. Secure authorizations are conducted with minimal keying when using this reader.

### Can I review past transactions with SlimCD for iPhone?

Yes, SlimCD for iPhone offers a comprehensive historical search capability. This allows you to search for prior transactions to issue voids, credits, or repeat transactions.

### Does SlimCD for iPhone support printing receipts?

Yes, SlimCD for iPhone supports printing to any AirPrint printer on your Wi-Fi network. It also supports specific Star Bluetooth printers like the SM-S220i and SM-T300i.

### What devices is SlimCD for iPhone compatible with?

SlimCD for iPhone is compatible with iPhone, iPad, and iPod devices. It is also supported on Apple Watch.

### How secure are transactions processed with SlimCD for iPhone?

All transactions are conducted over a secure 3G or Wi-Fi connection using Secure Sockets Layer (SSL) communications. For swiped transactions, the UNIMAG II reader must be injected with a secure POSX encryption key.

### What is the update frequency for SlimCD for iPhone?

The latest version of SlimCD for iPhone is 5.3.1, which was last updated on October 25, 2019. This indicates a less frequent update cycle.

### What is the user sentiment for SlimCD for iPhone based on ratings?

SlimCD for iPhone has a rating of 4.3 stars from 3 ratings. This suggests generally positive user sentiment among the limited number of reviewers.

## Version history (last 1 release)

### 5.3.1 — 2019-10-25

Update support for card readers in iOS 13

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## More apps by Slim CD, Inc

- [SlimCD Mobile v2](https://appshunter.io/ios/app/slimcd-mobile-v2/id6448710117)

All apps by Slim CD, Inc: https://appshunter.io/developer/467524326

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*