FERS Calculator vs FedFireGuide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FERS Calculator
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.
- Estimate retirement annuity
- Uses age, years of service, high-3 salary
- Ballpark estimate
- FERS specific calculation
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Federal employees under the Federal Employees Retirement System (FERS) can use this calculator to get a ballpark estimate of their retirement annuity. The computation for the estimated annuity will be based on age, years of service and the high - 3 salary.
FedFireGuide
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FedFireGuide is the essential pay calculator for federal firefighters working under the GS pay scale system. Whether you're a shift firefighter, chief, or inspector, quickly calculate your accurate pay breakdown based on official 2025 GS pay scales. Features: • Accurate pay calculations based on 2025 GS pay scales (GS-3 through GS-12) • Support for all 50+ locality pay areas across the US • COLA adjustments for Alaska, Hawaii, Puerto Rico, Virgin Islands, Guam, and Northern Mariana Islands • Firefighter-specific hourly rate calculations (2,756 hour annual basis) • Overtime calculations with proper rate caps • Support for 72, 60, and 56-hour work weeks • Per pay period and annual salary breakdowns • Clean, easy-to-read interface designed specifically for firefighters • All calculations performed locally on your device - no data collection • Dark mode optimized with traditional firefighter colors (red and gold) Perfect for: Shift firefighters working 72-hour weeks Fire chiefs and inspectors Anyone considering a federal firefighter career Current federal employees evaluating promotion opportunities Privacy: FedFireGuide does not collect, store, or transmit any personal information. All calculations are performed locally on your device. Disclaimer: Pay calculations are based on 2025 GS pay scales and should be verified with official sources. This app is provided for informational purposes only. Powered by Stellar Wealth Management - Tax Professionals for Federal Employees.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | FERS Calculator | FedFireGuide |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 0 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | Gabriel Ruliva | Stelmaszek Company Ltd |
In-app purchases
FERS Calculator
No in-app purchases
FedFireGuide
No in-app purchases
Questions
Is FERS Calculator free?
Is FedFireGuide free?
Do FERS Calculator or FedFireGuide have ads?
Which is updated more often, FERS Calculator or FedFireGuide?
Other comparisons
