# First Interstate Bank Mobile vs First Security Bank Roundup

First Interstate Bank Mobile and First Security Bank Roundup both sit at 4.7 stars, but that hides the real split: 100% of First Security Bank Roundup's written reviews are positive against 32% of First Interstate Bank Mobile's. First Security Bank Roundup also leads on iOS requirement (15.0 vs 17.0). First Interstate Bank Mobile's advantage is ratings volume (27K vs 99) and monetization model (free vs ad-supported). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

First Security Bank Roundup holds the better App Store score, 4.8 against 4.7. That said, the two scores are not equally well evidenced: First Interstate Bank Mobile has 27K ratings behind it against 99, so its average is the more settled of the two. Written reviews point the same way: 32% of First Interstate Bank Mobile's written reviews are positive against 100% of First Security Bank Roundup's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 12, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | First Interstate Bank Mobile | First Security Bank Roundup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (27K ratings)](https://appshunter.io/ios/app/first-interstate-bank-mobile/id1106627895/reviews) | **[4.8 (99 ratings)](https://appshunter.io/ios/app/first-security-bank-roundup/id6444939936/reviews)** |
| Number of ratings | **27K** | 99 |
| Positive reviews | 32.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 165 MB | 107 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [First Interstate Bank](https://appshunter.io/developer/566470806) | [First Security Bank of Roundup](https://appshunter.io/developer/1652957808) |

## What reviewers say

### First Interstate Bank Mobile

[App page](https://appshunter.io/ios/app/first-interstate-bank-mobile/id1106627895)

Manage your finances on the go with this banking application. View account balances, transaction history, and cleared checks. Transfer funds, pay bills, and deposit checks remotely. Receive customizable push notifications for important account activity.

**Highlights:** View account balances, Search transaction history, Transfer funds, Pay bills, Deposit checks, Configure push notifications, Balance Widget

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Instant transfers
- 💡 Useful features like mobile check deposit

**What reviewers complain about**

- 🐛 Inconsistent account balance notifications
- 💰 Excessive fees and charges
- 🔍 Lack of credit card functionality in app
- 🕰️ Slow processing of payments and deposits

**Reported bugs**

- Mobile check deposit not working with latest iOS updates
- Login issues and app crashes
- Inconsistent app behavior across devices

**Requested features**

- Add ability to view and pay credit card bills in app
- Improve mobile check deposit functionality
- Add search and sorting options for transactions
- Provide more detailed transaction descriptions


### First Security Bank Roundup

[App page](https://appshunter.io/ios/app/first-security-bank-roundup/id6444939936)

Manage your bank accounts conveniently and securely from your mobile device. Access your funds quickly and easily with this application.

**Highlights:** Convenient banking, Secure access, Fast transactions, Easy account management, Mobile access

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is First Interstate Bank Mobile free?

First Interstate Bank Mobile is free to download, with no in-app purchases.

### Is First Security Bank Roundup free?

First Security Bank Roundup is free to download, with no in-app purchases.

### Which has better reviews, First Interstate Bank Mobile or First Security Bank Roundup?

First Security Bank Roundup is rated higher. First Interstate Bank Mobile averages 4.7 out of 5 from 27K ratings, while First Security Bank Roundup averages 4.8 from 99 ratings.

### Do First Interstate Bank Mobile or First Security Bank Roundup have ads?

Both First Interstate Bank Mobile and First Security Bank Roundup show ads.

### Which is updated more often, First Interstate Bank Mobile or First Security Bank Roundup?

First Interstate Bank Mobile ships an update every 2 months, and First Security Bank Roundup every 2 months. Most recently, First Interstate Bank Mobile was updated on November 12, 2026 and First Security Bank Roundup on November 7, 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.*