# Interest Calculator Manager vs TSP Pro

The clearest difference is in-app purchases: Interest Calculator Manager at none against TSP Pro's 2. TSP Pro's advantage is update cadence (every 2 months vs every 16 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. TSP Pro sells 2 in-app purchases, starting at $2.99 per month. Interest Calculator Manager asks for nothing beyond the download.

Interest Calculator Manager ships an update every 16 months, TSP Pro every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Interest Calculator Manager | TSP Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (8 ratings)](https://appshunter.io/ios/app/tsp-pro/id6744782326/reviews)** |
| Number of ratings | — | **8** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | — | Freemium |
| Size | 19 MB | 26 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Farouk Nasser](https://appshunter.io/developer/1478256466) | [Vikorus, LLC](https://appshunter.io/developer/1780116957) |

## What reviewers say

### Interest Calculator Manager

[App page](https://appshunter.io/ios/app/interest-calculator-manager/id6744544847)

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

**In-app purchases:** none


### TSP Pro

[App page](https://appshunter.io/ios/app/tsp-pro/id6744782326)

This app helps military personnel, government employees, and federal workers precisely track their Thrift Savings Plan (TSP) funds. It offers free retirement estimation tools, detailed fund performance monitoring, and powerful analysis features to optimize retirement planning.

**Highlights:** TSP fund price monitoring, Historical performance analytics, Contribution allocation tracking, Retirement projection calculations, Fund performance comparison, FERS Retirement Estimator, TSP Contribution Calculator

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TSP Pro Monthly | $2.99 | per month |
| TSP Pro Annual | $14.99 | per year |


## Frequently asked questions

### Is Interest Calculator Manager free?

Interest Calculator Manager is free to download, with no in-app purchases.

### Is TSP Pro free?

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

### Do Interest Calculator Manager or TSP Pro have ads?

Neither Interest Calculator Manager nor TSP Pro shows ads.

### Which is updated more often, Interest Calculator Manager or TSP Pro?

Interest Calculator Manager ships an update every 16 months, and TSP Pro every 2 months. Most recently, Interest Calculator Manager was updated on October 24, 2026 and TSP Pro on October 24, 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.*