# FERS Calculator vs FedFireGuide

The clearest difference is update cadence: FedFireGuide at monthly against FERS Calculator's every 6 months. FedFireGuide also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

FERS Calculator ships an update every 6 months, FedFireGuide monthly. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | FERS Calculator | FedFireGuide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/fers-calculator/id1484437870/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | — |
| Size | 0 MB | 5 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Gabriel Ruliva](https://appshunter.io/developer/1484437869) | [Stelmaszek Company Ltd](https://appshunter.io/developer/1844488218) |

## What reviewers say

### FERS Calculator

[App page](https://appshunter.io/ios/app/fers-calculator/id1484437870)

Estimate your federal retirement annuity with this tool. It calculates your potential pension based on your age, years of service, and your highest three-year average salary. Get a ballpark figure for your FERS retirement.

**Highlights:** Estimate retirement annuity, Uses age, years of service, high-3 salary, Ballpark estimate, FERS specific calculation

**Features:** macOS Compatibility

**In-app purchases:** none


### FedFireGuide

[App page](https://appshunter.io/ios/app/fedfireguide/id6753960417)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FERS Calculator free?

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

### Is FedFireGuide free?

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

### Do FERS Calculator or FedFireGuide have ads?

Neither FERS Calculator nor FedFireGuide shows ads.

### Which is updated more often, FERS Calculator or FedFireGuide?

FERS Calculator ships an update every 6 months, and FedFireGuide monthly. Most recently, FERS Calculator was updated on October 15, 2026 and FedFireGuide on October 3, 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.*